CamNtech The Actiheart User manual

Actiheart User Manual 5.1.31 (Jun 2022)
1
The Actiheart
USER MANUAL
Document Reference: 30207
Issue Version: 5.1.31
Issue Date: 30/6/22
This equipment must be configured and operated in
accordance with these instructions and in conjunction with:
‘The Actiheart Guide to Getting Started’

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Regulatory Information
European Union The Actiheart is NOT a Medical Device and is intended for the
measurement of Energy Expenditure only. The Actiheart may be used for
applications relating to Energy Expenditure and research related to HRV
and is NOT indicated for use in clinical applications. Please contact
CamNtech UK for advice on application if further clarification is required.
The CE mark is applied to the Actiheart to indicate conformity with the
following Directives:
Electromagnetic Compatibility Directive 2014/30/EU.
RoHS2 Directive 2011/65/EU.
WEEE Directive 2012/19/EU.
Manufacturer: For assistance with set-up, use or maintenance of the Actiheart or to report any
unexpected operation or events, please contact CamNtech using the details
below or contact your local representative.
CamNtech Ltd
Manor Farm
Fenstanton
Cambridgeshire
PE28 9JD, UK
Tel: [phone]
Fax: [phone]
Email: [e-mail]
Web: www.camntech.com

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IMPORTANT SAFETY INFORMATION
WARNINGS
•Contains Lithium Battery –DO NOT ATTEMPT TO DISSASEMBLE: No user serviceable parts,
danger of chemical hazard if battery is damaged.
•Do not connect the device to computer or charger while attached to the patient.
•Not Defibrillation proof.
•Not indicated for use on areas of broken, damaged or irritated skin.
•Remove ECG pads from skin if there is significant discomfort from skin irritation or reaction.
•Devices removed from subjects must be considered to be contaminated –see Section 6.
Device and Packaging Symbols and Markings:
MEANING
SYMBOL
DESCRIPTION
General Warning
Potential hazard -refer to the warnings in the instructions
for use (i.e. this user guide).
Consult Instructions for Use
This symbol indicates that important operational
information is contained in the user instructions (i.e. this
user guide).
Ingress Protection Rating
IPX7
The Actiheart is suitable for temporary immersion in water
(up to 1 hour at 1m).
Serial Number
This number provides a unique identification for a particular
device. Always quote this number when seeking technical
assistance.
Catalogue Number
This number identifies this particular variant of the product
range.
Manufacturer and Date of
Manufacture
This symbol is accompanied by a date in the format yyyy-
mm which indicates when the device was manufactured.
The symbol is also accompanied by the address and
contact details of the manufacturer
Electrical Safety
Classification
The Actiheart is a TYPE B APPLIED PART.
FOR FURTHER HANDLING & ENVIRONMENTAL INFORMATION PLEASE REFER TO SECTION 6

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Contents
THE ACTIHEART .................................................................................................................................................................... 1
USER MANUAL....................................................................................................................................................................... 1
DOCUMENT REFERENCE: 30207.............................................................................................................................................. 1
REGULATORY INFORMATION ..................................................................................................................................................... 2
EUROPEAN UNION............................................................................................................................................................................... 2
MANUFACTURER:................................................................................................................................................................................ 2
IMPORTANT SAFETY INFORMATION........................................................................................................................................... 3
WARNINGS ..................................................................................................................................................................................... 3
DEVICE AND PACKAGING SYMBOLS AND MARKINGS: .................................................................................................................................. 3
1 ACTIHEART DATABASES........................................................................................................................................................... 9
1.1 RECORDINGS DATABASE.................................................................................................................................................................. 9
1.1.1 READINFO TABLE........................................................................................................................................................................ 9
1.1.2 USERS TABLE ........................................................................................................................................................................... 10
1.2 SETTINGS DATABASE .................................................................................................................................................................... 10
1.2.1 ENERGY MODELS...................................................................................................................................................................... 11
2 SETTINGS AND UTILITIES........................................................................................................................................................ 13
2.1 GENERAL.................................................................................................................................................................................... 13
2.2 DATABASE.................................................................................................................................................................................. 13
2.2.1 ADDING OR CHANGING DATABASES.............................................................................................................................................. 14
2.2.2 MANAGING USER INFORMATION ................................................................................................................................................. 14
2.3 ACTIHEART 5 .............................................................................................................................................................................. 15
3 ACTIVITY AND HEART RATE ................................................................................................................................................... 17
3.1 IBI MONITORING......................................................................................................................................................................... 17
3.1.1 OVERVIEW .............................................................................................................................................................................. 17
3.1.2 SETTING UP AN IBI MONITORING RECORDING ............................................................................................................................... 17
3.1.3 DELAYED START FOR IBI MONITORING RECORDING......................................................................................................................... 17
3.1.4 DOWNLOADING IBI MONITORING DATA FROM THE ACTIHEART......................................................................................................... 18
3.1.5 VIEWING DETAILS OF AN IBI MONITORING RECORDING ................................................................................................................... 18
3.1.6 DATABASE EXPORT AND FILE EXPORT ........................................................................................................................................... 18
3.2 ANALYSING AN IBI MONITORING RECORDING ................................................................................................................................... 19
3.2.1 HEART RATE &ACTIVITY GRAPH CONTROLS .................................................................................................................................. 20
3.2.2 OVERALL RESULTS..................................................................................................................................................................... 20
3.2.3 ANALYSIS RESULTS TABLE........................................................................................................................................................... 21
3.2.4 IBI ANALYSIS SETTINGS.............................................................................................................................................................. 22
3.2.5 COPYING IBI MONITORING DATA TO THE CLIPBOARD ...................................................................................................................... 23
3.2.6 EXPORTING IBI MONITORING DATA ............................................................................................................................................. 23
3.2.7 EDITING IBI DATA..................................................................................................................................................................... 23
3.2.8 LEGACY IBI ANALYSIS FUNCTION.................................................................................................................................................. 23
3.3 LONG TERM RECORDING............................................................................................................................................................... 24
3.3.1 SETTING UP A LONG TERM RECORDING......................................................................................................................................... 24
3.3.4 READING LONG TERM DATA FROM THE ACTIHEART......................................................................................................................... 25
3.4 ANALYSING A LONG TERM RECORDING ............................................................................................................................................ 25
3.4.1 LONG TERM TOOLS TABS &CONTROLS......................................................................................................................................... 26

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3.5 PREVIEWING &PRINTING LONG TERM DATA .................................................................................................................................... 28
3.6 AUTO CLEAN............................................................................................................................................................................... 29
3.7 ESTIMATE SLEEPING HR................................................................................................................................................................ 29
3.8 SELECT DAY ................................................................................................................................................................................ 29
3.9 COPYING DATA TO THE CLIPBOARD .................................................................................................................................................. 29
3.9.1 COPY ALL DATA......................................................................................................................................................................... 29
3.9.2 COPY CIRCADIAN COMPONENTS .................................................................................................................................................. 29
4 ENERGY EXPENDITURE ANALYSIS .......................................................................................................................................... 30
4.1 OVERVIEW ................................................................................................................................................................................. 30
4.1.1 DIFFERENCES BETWEEN THE TWO APPLICATIONS............................................................................................................................. 30
4.2: FACTORS AFFECTING THE CALCULATION OF ENERGY EXPENDITURE ....................................................................................................... 30
4.2.1 THE BRANCHED MODEL SETTINGS ............................................................................................................................................... 30
4.2.2 BRANCHED MODEL ADJUSTMENT IN THE PRESENCE OF RECOVERED DATA ........................................................................................... 31
4.2.3 BRANCHED MODEL ADJUSTMENT IN THE PRESENCE OF STRESS.......................................................................................................... 31
4.2.4 INDIVIDUAL CALIBRATION........................................................................................................................................................... 31
4.2.5 RESTING ENERGY EXPENDITURE (REE).......................................................................................................................................... 31
4.2.6 SLEEPING HEART RATE (SHR) ..................................................................................................................................................... 31
4.2.7 LOST HEART RATE DATA ............................................................................................................................................................ 31
STEP 1: CLEANING............................................................................................................................................................................ 32
STEP 2: REMOVING SPURIOUS SIGNALS FROM THE CLEANED DATA ............................................................................................................. 32
STEP 3: REPLACING REMOVED DATA.................................................................................................................................................... 32
4.2.8 GAPS IN THE DATA.................................................................................................................................................................... 32
4.3 DAILY ENERGY EXPENDITURE ......................................................................................................................................................... 33
4.3.1 STEPS IN PERFORMING AN ANALYSIS............................................................................................................................................. 34
4.3.2 SELECTING AN ENERGY MODEL.................................................................................................................................................... 34
4.3.4 INDIVIDUAL CALIBRATION........................................................................................................................................................... 36
4.3.5 ANALYSING A RECORDING........................................................................................................................................................... 36
4.3.6 GAPS IN THE DATA.................................................................................................................................................................... 37
4.3.7 THE DISTRIBUTION OF AEE......................................................................................................................................................... 37
4.3.8 PREVIEWING &PRINTING DATA .................................................................................................................................................. 38
4.3.9 COPYING DATA ........................................................................................................................................................................ 38
4.3.10 ANALYSE ALL ......................................................................................................................................................................... 39
4.4 ADVANCED ENERGY EXPENDITURE .................................................................................................................................................. 39
4.4.2 SETTING UP A RECORDING .......................................................................................................................................................... 39
4.4.3 SETTING UP A RECORDING –DELAYED START ................................................................................................................................. 41
4.4.4 DOWNLOADING AN ADVANCED EE RECORDING.............................................................................................................................. 41
4.4.5 VIEWING DETAILS OF AN ADVANCED EE RECORDING....................................................................................................................... 41
4.4.6 DATABASE EXPORT AND FILE EXPORT ........................................................................................................................................... 41
4.4.7 SELECTING AN ENERGY MODEL.................................................................................................................................................... 41
4.4.8 INDIVIDUAL CALIBRATION........................................................................................................................................................... 41
4.4.8.1 MEASURED RMR .................................................................................................................................................................. 42
4.4.8.2 SLEEPING HEART RATE............................................................................................................................................................ 43
4.4.8.3 MAXIMUM HEART RATE ......................................................................................................................................................... 43
4.4.8.4 VO2 MAX............................................................................................................................................................................ 43
4.4.9 ANALYSING AN ADVANCED ENERGY EXPENDITURE RECORDING.......................................................................................................... 44
4.4.10 VIEWING A SPECIFIC POINT....................................................................................................................................................... 45
4.4.11 THE DISPLAY TAB.................................................................................................................................................................... 45
4.4.12 THE AEE TAB......................................................................................................................................................................... 45
4.4.13 THE MODEL TAB .................................................................................................................................................................... 46
4.4.14 THE COMMENTS TAB .............................................................................................................................................................. 46

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4.4.15 THE UTILITIES TAB .................................................................................................................................................................. 46
4.4.16 PRINTING AND PREVIEWING DATA ............................................................................................................................................. 46
4.4.17 COPYING ALL DAYS................................................................................................................................................................. 47
4.5 THE STEP TEST ............................................................................................................................................................................ 47
4.5.1 OVERVIEW .............................................................................................................................................................................. 47
4.5.2 SETTING-UP A STEP TEST ........................................................................................................................................................... 47
4.5.3 DOWNLOADING STEP TEST DATA FROM THE ACTIHEART................................................................................................................... 49
4.5.4 VIEWING DETAILS OF A STEP TEST RECORDING............................................................................................................................... 49
4.5.6 ANALYSING A STEP TEST RECORDING............................................................................................................................................ 49
4.5.7 THE ENERGY REGRESSION EQUATIONS.......................................................................................................................................... 50
4.5.8 SETTING-UP MULTIPLE USERS..................................................................................................................................................... 51
4.5.9 MARKING BAD HR DATA............................................................................................................................................................ 51
4.5.10 COPYING DATA FOR A USER...................................................................................................................................................... 51
4.5.11 PRINTING AND PREVIEWING...................................................................................................................................................... 51
4.5.12 ANALYSE ALL ......................................................................................................................................................................... 52
4.5.13 SAVING AN INDIVIDUAL CALIBRATION ......................................................................................................................................... 52
4.5.14 CORRECTING THE STEP HEIGHT OF A COMPLETED TEST .................................................................................................................. 52
5 FULL WAVEFORM ANALYSIS .................................................................................................................................................. 53
5.1 SELECTING A RECORDING .............................................................................................................................................................. 53
5.2 WAVEFORM VIEWER.................................................................................................................................................................... 54
5.3 ECG AVERAGE ............................................................................................................................................................................ 56
6.0 SLEEP ANALYSIS [RESEARCH ONLY]..................................................................................................................................... 58
6.1 OVERVIEW ................................................................................................................................................................................. 58
6.1.1 CHOOSING AN APPLICATION FOR MAKING A RECORDING.................................................................................................................. 58
6.2 SLEEP ANALYSIS........................................................................................................................................................................... 59
6.2.1 SETTING UP A SLEEP RECORDING ................................................................................................................................................. 59
6.3 ANALYSING A SLEEP ANALYSIS RECORDING ....................................................................................................................................... 59
6.3.1 VIEWING A SPECIFIC DATA POINT ................................................................................................................................................ 61
6.3.2 BEAT TO BEAT ZOOM ................................................................................................................................................................ 61
6.3.3 PREVIEWING DATA.................................................................................................................................................................... 62
6.3.4 PRINTING DATA........................................................................................................................................................................ 62
6.3.5 COPYING DATA ........................................................................................................................................................................ 62
6.3.6 EXPORTING DATA ..................................................................................................................................................................... 62
6.4 SLEEP STAGING ........................................................................................................................................................................... 63
6.4.1 PREVIEWING DATA.................................................................................................................................................................... 65
6.4.2 PRINTING DATA........................................................................................................................................................................ 65
6.4.3 COPYING DATA ........................................................................................................................................................................ 65
6.4.4 EXPORTING DATA ..................................................................................................................................................................... 65
6.5 APNOEA SCREENING..................................................................................................................................................................... 66
6.5.1 PREVIEWING DATA.................................................................................................................................................................... 67
6.5.2 PRINTING DATA........................................................................................................................................................................ 67
6.5.3 COPYING DATA ........................................................................................................................................................................ 67
6.5.4 EXPORTING DATA ..................................................................................................................................................................... 67
6.6 APNOEA SEARCH ......................................................................................................................................................................... 68
6.6.1 PREVIEWING DATA.................................................................................................................................................................... 69
6.6.2 PRINTING DATA........................................................................................................................................................................ 69
6.6.3 COPYING DATA ........................................................................................................................................................................ 69
6.6.4 EXPORTING DATA ..................................................................................................................................................................... 69
6.7 SPECTRO-GRAM........................................................................................................................................................................... 70
6.7.1 PREVIEWING DATA.................................................................................................................................................................... 70

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6.7.2 PRINTING DATA........................................................................................................................................................................ 70
6.7.3 COPYING DATA ........................................................................................................................................................................ 71
6.7.4 EXPORTING DATA ..................................................................................................................................................................... 71
7 SAFETY AND HANDLING INFORMATION ................................................................................................................................ 72
7.1 DECONTAMINATION..................................................................................................................................................................... 72
7.2 BATTERY .................................................................................................................................................................................... 72
7.3 DISPOSAL ................................................................................................................................................................................... 72
7.4 EMC DECLARATION AND GUIDANCE............................................................................................................................................... 73
APPENDIX 1: TECHNICAL SPECIFICATIONS OF THE ACTIHEART 5............................................................................................... 75
ACCELEROMETER SPECIFICATION .......................................................................................................................................................... 75
ACCELERATION MEASUREMENT............................................................................................................................................................ 75
ACTIVITY COUNTS.............................................................................................................................................................................. 75
ECG SPECIFICATION........................................................................................................................................................................... 76
ECG DERIVED MEASUREMENTS ........................................................................................................................................................... 76
ACTIHEART RECORDING TIMES............................................................................................................................................................. 76
SENSOR CALIBRATION AND REPRODUCIBILITY.......................................................................................................................................... 77
TIME KEEPING .................................................................................................................................................................................. 77
WATERPROOF CASE........................................................................................................................................................................... 77
SERVICE LIFE..................................................................................................................................................................................... 77
APPENDIX 2: THE BRANCHED MODEL, CALIBRATION EQUATIONS AND OTHER EQUATIONS .................................................... 78
ESTIMATING ENERGY EXPENDITURE (EE) FROM ACTIVITY AND HEART RATE.................................................................................................. 78
TECHNIQUES USED FOR ESTIMATING ENERGY EXPENDITURE FROM ACTIVITY AND HEART RATE ......................................................................... 78
THE BRANCHED EQUATION MODEL FOR ESTIMATING AEE FROM SIMULTANEOUS ACTIVITY AND HR................................................................. 79
DEFAULT PARAMETER VALUES FOR THE BRANCHED MODEL....................................................................................................................... 83
ACTIVITY ONLY OR HEART RATE ONLY MODE ......................................................................................................................................... 84
INDIVIDUAL CALIBRATION.................................................................................................................................................................... 84
CUSTOMISING THE EQUATIONS AND THE MODEL..................................................................................................................................... 85
BRANCHED MODEL ADJUSTMENT IN THE PRESENCE OF RECOVERED DATA.................................................................................................... 85
BRANCHED MODEL ADJUSTMENT IN THE PRESENCE OF STRESS................................................................................................................... 85
APPENDIX 3: THE SCHOFIELD EQUATIONS ................................................................................................................................ 87
SCHOFIELD EQUATIONS....................................................................................................................................................................... 87
APPENDIX 4: THE STEP TEST CALCULATIONS ............................................................................................................................ 88
HR CALIBRATION............................................................................................................................................................................... 88
ACTIVITY CALIBRATION ....................................................................................................................................................................... 89
APPENDIX 5: CALCULATION OF ENERGY EXPENDITURE ............................................................................................................ 90
APPENDIX 6: VALIDATION POSTERS ......................................................................................................................................... 91
APPENDIX 7: GLOSSARY OF DATA EXPORT TERMS ................................................................................................................... 92
DOCUMENT REVISION HISTORY ............................................................................................................................................... 95

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IMPORTANT BATTERY CARE INFORMATION!
The Actiheart device contains a miniature rechargeable battery which must be cared for correctly to
maximise service life. Following any long recording, always ensure the battery is at least partly re-charged -
do not leave it completely flat before storage. If the device is to be stored for an extended period then it
should ideally be part-charged rather than left either completely fully or empty.

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1 Actiheart Databases
The Actiheart uses two SQLite databases to store data and settings separately.
Direct access to these is not required in order to record, read and analyse data.
However if a user wishes to view the details of certain records which are not
viewable through the user interface or if a user wishes to customise certain
settings then these may be opened using any SQLite data viewer. For example,
http://sqlitebrowser.org/ offer a browser for SQLite data.
The database(s) which hold the recorded data are created and named by the
user and by default are saved in C:\Users\User Id\My Documents\Actiheart Data.
The software is shipped with a database which contains demonstration files.
The Settings database is also shipped with the software and a copy placed in the
AppData directory for each user during their first use.
1.1 Recordings
Database This database holds recorded data and has a number of tables containing
recording, user and logging information. The two key tables are ReadInfo and
Users.
1.1.1 ReadInfo
Table This is one of the most important tables in that it contains all the recording
identifying data. Raw data is stored alongside in the ReadData table. This table is
populated every time that the Actiheart is read. The following information is
stored along with the raw data. Additional fields may be present.
•Computer Name: The Windows name of the computer used.
•Computer User: The current Windows login name.
•Read Time: Time at which the data was downloaded from the device to
the computer. This is often the end time of the recording.
•Start Time: This is the time at which the recording started.
•Serial No.: The serial number of the recording Actiheart or other device.
•Battery Voltage: This is the battery voltage at the time the data was
read.
•User Id: This is the User name which was used for the recording. If a
Test Id was also used then the User Id field will be displayed as User Id_
Test Id e.g. 99934_ bike + treadmill.
•Test type: This is the recording mode, and is specific to the type of
Actiheart or other device used for each recording.
•Samples: This is the raw recording data size in bytes.
•Step Size: This is the physical step height at which a test was conducted
(in mm) and is very important reference information for the reasons given
in Section 4.4.

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1.1.2 Users
Table This table contains User details many of which affect the calculation of energy
expenditure. These are all entered from the Actiheart application and they are:
•User ID: Any ID may be used, either an actual name or ID number.
•Height: Always in metres, internally. Even when entered imperially.
•Date of Birth
•Weight: Always in kg, internally. This is used for many of the Energy
Expenditure (EE) calculations.
•Resting Heart Rate: See Section 4.4.8.2 for more details.
•Measured RMR: This is whichever value the user has opted for i.e.
equation based or actually measured. See Section 4.4.8.1 for more
details.
•HR max: This is whichever the user has opted. i.e. equation based or
user entered. See Section 4.4.8.3 for more details.
•VO2 max: See Section 4.4.8.4 for more details.
The table also contains individual Activity and Heart Rate calibration data
obtained either from the built-in Step Test or from an external calibration.
The Step Test data is generated automatically when a Step Test is saved (see
Section 4.5 for more details). The data is contained in the fields labelled
Energy20 to Energy280. The data is in Joules/min/kg.
Heart Rate calibration data is contained in the fields HRee20 to HRee280 and
Activity Calibration data is contained in the fields ActEE50 to ActEE6400. This
data is entered by the user. Please see Section 4.4.8 on individual calibration for
more details.
1.2 Settings
Database This database has a number of tables of which only two, paee and StepPAI are
key operational tables. The paee table is described in more detail later. This table
contains information about:
•Group calibration equations.
•Branched Model Discriminants and Weighting factors. See Appendix 2
for more details.
•Compensation factors for recovered Heart Rate data and for stress (see
Appendix 2).
•Flags to enable individual calibration.
The group calibration equations shown in the table are the default ones supplied
with the software but a user can specify his own. The branched model
discriminants can also be varied at will. This information can be viewed directly
from the application without having to open the database (see Sections 4.3.3
and 4.4.7).

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The StepPAI table contains the PAI-HRaS regression equation obtained from the
Step Test (see Appendix 4).
StepPAI
FAC
1
2
3
4
5
6
7
8
9
10
11
2.9
1.1
2.9
1.3
-10
0
0
0
0
-75
0
WARNING
When creating new equations or varying any of the branched model values
do not replace any of the default values but create a new record in the
database.
1.2.1 Energy
Models The different energy models available to analyse recordings are controlled by
entries in the paee table of the settings database. If you wish to experiment with
a new model or combinations of existing models, you may add new rows to this
database. You should do this with some caution, and we can make no guarantee
as to the energy expenditure results you will gain. You must not alter the existing
rows.
Each row added to the table will result in a new energy model being added to the
list available within the software. Most of the columns needed for each entry are
shown in the diagram on the following page, linked to the corresponding entries
in the branched model parameters window. The remaining columns are
explained immediately below:
•ViewOrder: This number determines the order in which the models will
be displayed within the software. If adding a new model, simply choose a
higher number, for example starting from 100.
•ActiheartFlex: This controls the “flex point” value of activity counts where
the EE prediction switches between a linear projection from the origin to
the Act EE equation.
•HRflex: This controls the “flex point” value of heart rate where the EE
prediction switches between a linear projection from the origin to the HR
EE equation.
•Jap2007Activity: This controls whether the piecewise linear activity to
EE model from the JAP2007 paper will be used.
•common: This determines whether the model appears when “Show
Common Models” is selected.

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Name
ActiheartPAI4
ActiheartPAI5
ActiheartPAI2
ActiheartPAI6
ActiheartPAI3
ActiheartPAI6
ActiheartPAI1
Precover
StressComp
UseStepCal
UseHrCal
UseActCal
HRpai3
HRpai6
HRpai7
HRpai9
P1
P2
P3
P4
Z1
Z2
X
Y1 Y2
HRpai1
HRpai2
HRpai4
HRpai5
HRpai8

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2 Settings and Utilities
Clicking on the Utilities button from the main menu will display the Actiheart
Utilities window as shown below.
The utilities are divided up using the sections on the left hand side of the window.
2.1 General General settings relate to the software installation and user logging.
The View/Enter Serial Number function will allow you to enter a software serial
number supplied by CamNtech to both register the software and enable full
functionality.
The Legacy Data Import function allows a recording previously made with the
Actiwave Cardio and saved as an .EDF file to be imported and converted for
analysis with the Actiheart software.
The Current Computer Login information box shows the information automatically
collected about the computer and user operating the software. Note that these
will be captured each time a recording is made using the software to help
reference and trace those recordings.
2.2 Database The Database section of the Utilities window provides information and tools for
the management of the current database of recordings and associated user
information.

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The currently selected database (and its location) are shown within the “Currently
Selected Database” area. A listing of all users contained within this is shown in
the “Users in this database” area.
2.2.1 Adding
or Changing
Databases To add a new blank database (no users or records), click on the New button. A
Windows file dialogue box will be displayed where you can supply the name and
location of the new database before clicking Open to save the database.
To select a different existing database, click on the folder button. This will open a
standard Windows file dialogue where it is then possible to locate and select the
required existing database.
2.2.2
Managing
User
Information It is possible to manage user information in the “Users in this database” area.
This provides the following options:
•Add: This will invoke the “Add new user wizard” as described in the
Guide to Getting Started.
•View: Click on any user in the list then click the View button to view
details for that user.
•Edit: Click on a user in the list then click the Edit
button to show the following screen:
It is possible to change the following user details
from this screen:
oWeight
oHeight
oSleeping Heart Rate
oMaximum Heart Rate
When changes have been made, click Save to
store the information.
•Delete: If a user’s details are no longer required, click on a user in the list
then click the “Delete”button to permanently erase the details.

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2.3 Actiheart 5 Clicking the Actiheart 5 tabs brings a number of functions for monitoring or
maintaining the Actiheart 5 device.
The “Read Actiheart” button will automatically attempt to read from the Actiheart
connected, regardless of which section of the software the device was set up
from. It can be used as an alternative to any of the individual specialist “Read”
functions.
The “Test Actiheart” button will open the Actiheart 5 Test window, as shown
below.
This test window is not needed in routine use, but will allow a number of
diagnostics checks to be made if requested by CamNtech technical support. At
the top of the window in the centre, the software will indicate whether an
Actiheart 5 has been detected and whether it is in normal operating mode or
“boot” mode only.
The functions available are explained below:
•Battery: This will send a query to the device to report on the estimated
battery level. Note that the battery is charged continuously while the
Actiheart is connected. There is no need to take any additional action to
charge the Actiheart.
•Get Config: This will ask the Actiheart device to report back on its current
configuration. That includes the recording mode details and recording /
log size, but not the recording metadata.
•Get NVData: This function will show Non-Volatile data stored on the
Actiheart, which includes both the current recording metadata (username
and start date / time) and also any permanent stored data such as serial
number and calibration values.
•Firmware V: The current firmware version will be reported here. Note that
the bootloader and firmware have separate version numbers, so the value
shown here will depend on whether the device has been moved into
“boot” mode or not.

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•Update Firmware: Clicking will open the firmware update window,
allowing you to update the firmware of the currently attached device. Do
not update the firmware of a device with a flat battery –allow it to charge
partway first. Note that the software will apply a firmware update to the
version packaged with your PC software. This can be either an “update”
or “backdate” as you choose.
•Clear List: This will clear the large central list of diagnostic information
which was collected by using the other functions.
•Mem Check: This is an internal CamNtech test to report on the memory
chips of the device.
•Erase: This triggers a full erase of the device memory. It should only be
performed if you are certain you wish to erase any recording data on the
device. It is also performed automatically when you wish to set up for a
new recording –there is no need to use this button.
•Acc Check: This is an internal CamNtech test to report on the
accelerometer chips of the device.
•Enter Boot: The Actiheart connected will be asked to leave the normal
firmware operating mode and enter “boot” mode. It is not necessary to
perform this manually before a firmware update.
•Exit Boot: The Actiheart connected will be asked to leave the “boot”
mode and enter its normal operating mode. This will normally happen
automatically in use, but may be applied manually immediately after a
battery charge, if the centre heading indicates that the device is in “boot”
mode.

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3 Activity and Heart Rate
3.1 IBI Monitoring
3.1.1 Overview The IBI Monitoring recording mode is designed for recording for up to two weeks,
recording the timing of every single heartbeat and three-axis acceleration
waveforms for that time. This recording mode allows for detailed heart rate
variability (HRV) analysis.
1
Heart rate and activity counts are also computed and
displayed for the whole length of the recording during analysis.
Recordings made using an Actiheart 5 in IBI Monitoring mode can also be used
in the “Long Term” analysis function, and displayed in the “Full Waveform”
analysis, albeit with only partial ECG information. They can furthermore be used
in any of the Energy Expenditure monitoring functions.
Selecting the “IBI Monitoring”function in the main menu brings up the following
window:
3.1.2 Setting Up an
IBI Monitoring
Recording An IBI Monitoring recording is set up in the same way as a Signal Test recording
by clicking on the Setup button then following the set-up wizard. For further
details please see the Guide to Getting Started.
3.1.3 Delayed Start
for IBI Monitoring
Recording Delayed Start allows the user time to set up an Actiheart or several Actihearts
and for them to start recording at a time in the future. This can be useful, for
example, when setting up a group of subjects together. The maximum start delay
is 72 hours. The Actiheart will not begin recording until the start time is reached.
All times are taken from the clock on the host PC.
1
The term HRV is a generic term used in this manual to indicate the variability of the
cardiac Interbeat Interval. The number of intervals available for analysis and the measure
of variability used varies according to the application.

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3.1.4 Downloading
IBI Monitoring Data
from the Actiheart Click on the Read button to download the data. This process is the same as for
any other recording (for further details please see the Guide to Getting Started).
The data is stored in the currently selected database ready for analysis.
3.1.5 Viewing Details
of an IBI Monitoring
Recording Once the recording has been stored in the database, it is possible to view
information about it. Highlight the required recording from the IBI Monitoring
window and then click the Info button to produce the window shown below:
3.1.6 Database
Export and File
Export
It is possible to export a particular file or to export a user’s data and experiment
data from this field. This is done by selecting either the “File export” or “Database
export”tab from the bottom of this screen.
•Database Export: Exports the full user details and experiment details to
a target database which is selected by clicking on the “Export As…”

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button. Click “Export” to export the database; when this is complete, a
confirmation message is shown.
•File export: Exports a file in Tab or Comma Delimited text format, or in
EDF+ data format for ECG analysis in external software. The default file
name and location are shown and clicking Save will export the data.
Alternatively, clicking “Save As”allows an alternative file name/folder
location to be specified.
This export procedure is identical for all recording modes.
3.2 Analysing an
IBI Monitoring
Recording The recording required for analysis can be selected by either double clicking on
it, or highlighting it and clicking on Analyse. The IBI Monitoring analysis window
will be shown, which is divided as shown below:
A. User and Recording Details: This area shows the parameters of the
user logged for this recording –age, weight, etc.
B. Heart Rate & Activity Graph: This area shows a graph of activity data in
black and heart rate data in red for the duration of the recording. Further
details of the functions are provided below. It also allows you to zoom in
and out, scroll through the data, select an analysis period, and choose the
epoch for that analysis.
C. Day Selection: For a longer recording which spans multiple days,
clicking the date in this list will cause the main heart rate and activity
graph to shift to that day. A single click will shift to the day chosen whilst
maintaining the current zoom and time-of-day position for the graph. A
A
B
D
C

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double click will reset the graph to show the full 24 hours of the chosen
day.
D. Analysis Results: Once a period has been selected for analysis, this
area provides Overall Results with results in graphical and quantitative
form of the entire period analysed as one, and an Analysis Results Table
with epoch-by-epoch HRV measures.
3.2.1 Heart Rate &
Activity Graph
Controls The Heart Rate & Activity graph has a number of controls and functions as
described below:
Click and drag using the right mouse button to scroll through the data. Use your
mouse wheel to zoom in and out on the time scale. Beyond a certain zoom level,
the graph will begin to show IBI data in blue rather than only averaged heart rate
in red. You may also use the controls to the left and right of the graph to change
the vertical scale for activity (movement), HR and IBI.
3.2.2 Overall
Results It is possible to perform a detailed analysis of the IBI data recorded by
highlighting the region of interest on the Activity and Heart rate graph as
described above. The Overall Results tab will then present overall statistical
results for the period alongside graphical illustrations. These results are
described below.
•VLF: Very low frequency component of the IBI, derived using an FFT.
•LF: Low frequency component of the IBI, derived using an FFT.
•HF: High frequency component of the IBI derived using an FFT.
•RMSSD: Root mean square of the successive differences of the IBIs.
•Triangular index: The integral of the density distribution divided by the
maximum interval. This is also shown on the histogram plot.
Adjust Heart Rate
Scale (BPM)
Adjust Activity
Scale (Counts)
Highlight the analysis
period by left dragging
Move mouse
cursor for specific
data here
Zoom in or out using the mouse
wheel. Drag using the right
mouse button to scroll.
Change the Analysis Epoch (for
post hoc analysis, the raw data
collection is continuous)
Fine adjust Analysis Period
Start / End or select all
data. Click Analyse after
making changes.