CamNtech The Actiheart User manual

Actiheart User Manual 5.1.31 (Jun 2022)
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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).