Gait up PhysiGait Lab User manual

Gait Up SA
EPFL Innovation Park, Bat C. CH-1015 Lausanne
www.gaitup.com
TVA CHE-145.136.760
PhysiGait Lab user manual v1.3.1 Date: 29.04.2019
Copyright ©2018, All Rights Reserved - Gait Up SA. CH-1015 SWITZERLAND 1
User manual and Outcome parameters
PhysiGait Lab
Thank you for purchasing our PhysiGait Lab, the easy-to-use system to accurately measure
spatio-temporal gait performances. Physilog®5 sensors measure the movement in the field
and the dedicated software on a USB key computes relevant information with in-lab
precision. This manual introduces how to use the sensors and software on USB key to
perform gait analysis.

Gait Up SA
EPFL Innovation Park, Bat C. CH-1015 Lausanne
www.gaitup.com
TVA CHE-145.136.760
PhysiGait Lab user manual v1.3.1 Date: 29.04.2019
Copyright ©2018, All Rights Reserved - Gait Up SA. CH-1015 SWITZERLAND 2
Table of Contents
1. PhysiGait Lab elements..........................................................................................3
2. Gait recording with Physilog®5 - Basics..................................................................3
3. Gait recording detailed description .........................................................................4
3.1 Attachment .............................................................................................................4
3.2 Start the recording from the sensors.......................................................................4
3.3 Walk........................................................................................................................5
3.4 Stop the recording ..................................................................................................5
3.5 Start the recording from the smartwatch.................................................................5
3.6 Plug the Physilog®to a computer ...........................................................................6
3.7 Transfer..................................................................................................................6
4. Analyse the data.....................................................................................................7
4.1 Gait Analysis options..............................................................................................8
5. Practical Considerations.........................................................................................8
5.1 Charging Physilog®5...............................................................................................8
5.2 Physilog®5 configuration for gait measurements ....................................................8
5.3 How to update the software on USB key................................................................9
5.4 Handling / Maintenance..........................................................................................9
5.5Troubleshoot.........................................................................................................12
6. Gait Parameter Overview .....................................................................................13
6.1 Essentials .............................................................................................................13
6.2 Temporal Analysis................................................................................................13
6.3 Spatial Analysis ....................................................................................................14
6.4 Turning Analysis...................................................................................................15
6.5 Clearance Analysis...............................................................................................15
7. Limited Warranty & Support Policy.......................................................................16
8. Certification claims for Physilog®5 sensors..........................................................17
Contact information........................................................................................................18

Gait Up SA
EPFL Innovation Park, Bat C. CH-1015 Lausanne
www.gaitup.com
TVA CHE-145.136.760
PhysiGait Lab user manual v1.3.1 Date: 29.04.2019
Copyright ©2018, All Rights Reserved - Gait Up SA. CH-1015 SWITZERLAND 3
1. PhysiGait Lab elements
2. Gait recording with Physilog®5 - Basics
* See section 5.2 for early
firmware versions
Attach
Fix the sensors on the
feet/ shoes using the
rubber clips or foot
attachment straps.
Start
Start the recording by
pushing the main button
for 2 seconds, the LED
becomes green and turns
off when the sensor is
starting.
Walk
Wait until the two sensors
blink green
synchronously
and ask the subject to
walk according to your
protocol.
Stop
Stop the sensors* by
pushing the main button
for 3 seconds until the LED
turns orange. The LED
blinks green 3 times when
the sensor is correctly
stopped.
Plug
Connect the Physilog®to
the computer via the USB-
micro USB cable
Save to PC
Copy-paste the .BIN files
from the Physilog®to the
computer for analysis

Gait Up SA
EPFL Innovation Park, Bat C. CH-1015 Lausanne
www.gaitup.com
TVA CHE-145.136.760
PhysiGait Lab user manual v1.3.1 Date: 29.04.2019
Copyright ©2018, All Rights Reserved - Gait Up SA. CH-1015 SWITZERLAND 4
3. Gait recording detailed description
3.1 Attachment
The PhysiGait Lab is delivered with 2 rubber clips as default accessory. Elastic foot straps
can be bought from the web-shop (shop.gaitup.com) if needed, for example to measure
barefoot gait.
To insert the Physilog®5 into the rubber clip, slide the sensor into the clip on one side then
carefully pull the rubber of the opposite side to cover the edge of the Physilog®. The USB
entry of the Physilog® should be oriented in front of the clip opening, so that the sensor can
be charged without removing the clip.
For gait measurement the sensor can be fixed in any orientation on the foot, either in the
shoelaces or on the outer side of the shoe (on the inner side there is a risk of disturbing the
gait). The computed gait parameters will not be influenced by the sensor position. Fix the
sensor such that it doesn't move with respect to the foot / shoe.
3.2 Start the recording from the sensors
To start the sensor, push the main button for about 3 seconds. The LED becomes green
and stops again, at this moment you can release the button. It doesn't matter which
Physilog®you turn on first.
For firmware version 1.0.4, the “master” sensor will start to blink green immediately, the
slave sensor shows a continuous green light until it has obtained the synchronisation signal
which starts its recording (“Initializing” in the illustration above).
For later firmware versions (v1.1.0 upwards, released June 2017), both sensors start to
blink from the start, when they are synchronized the blinking is simultaneous. To better see
if they are synchronized it is recommended to start the sensors with a short lag between the
starts.
In all cases wait until the two sensors blink green simultaneously before starting the
movement. The best practice is to start the sensors when they are already attached to the
foot. Otherwise turn them on just before fixing on the subject and ask the subject to stand
still for 5 seconds with the Physilog®on the feet to allow proper auto-calibration of the system.

Gait Up SA
EPFL Innovation Park, Bat C. CH-1015 Lausanne
www.gaitup.com
TVA CHE-145.136.760
PhysiGait Lab user manual v1.3.1 Date: 29.04.2019
Copyright ©2018, All Rights Reserved - Gait Up SA. CH-1015 SWITZERLAND 5
3.3 Walk
Gait Up's PhysiGait Lab system can be used to measure various walking tests, the system
is designed for logged gait tests of various length and protocol such as 20m gait test, 6min
walk test or a figure-of-eight test. When measuring several different protocols or conditions
it is recommended to generate one sensor file for each, that is: start and stop the recording
for each test or refer to heel strike times.
3.4 Stop the recording
To stop the recording push the main button of the sensors for about 3 seconds.
In order to have the synchronisation of the sensors at the end of the measurement in
firmware v1.0.4, you need to turn off the “slave” sensor first. This is the sensor that
remained green for some time at the beginning of the recording and which has a text file
called “slave.txt” on the internal memory. When pushing the main button, the LED will be
green and turn orange (red and green LED on), this is the moment when you can release
the button. The “slave” sensor displays the green LED on until it has received the
synchronisation from the “master” (“Finalizing” on the illustration below) after which it turns
off (with 3 rapid green blinks to mark successful data recording). You can then turn off the
“master” sensor in the same way, push the main button until the LED becomes orange and
then release the button.
For later firmwares (v1.1.0 upwards, released June 2017) it is not necessary to stop the
slave sensor first and wait for synchronization, the sensors can be turned off in any order.
When pushing the main button, the LED will be green and turn orange (red and green LED
on), this is the moment when you can release the button. The sensors turn off with 3 rapid
green blinks to mark successful data recording.
Between each start and stop of recording one file is created and stored on the internal
memory of the Physilog®5.
3.5 Start the recording from the smartwatch
Alternatively to the recording using the button of the sensors, it is possible to control them
from the remote control smartwatch application. To open the app, press the lower right
button of the included smartwatch.

Gait Up SA
EPFL Innovation Park, Bat C. CH-1015 Lausanne
www.gaitup.com
TVA CHE-145.136.760
PhysiGait Lab user manual v1.3.1 Date: 29.04.2019
Copyright ©2018, All Rights Reserved - Gait Up SA. CH-1015 SWITZERLAND 6
When using the watch for the first time with the sensor pair, check that
the correct serial numbers are entered in the settings. For this, press the
gearwheel button at the bottom of the screen and control that the two set
numbers correspond to the serial numbers written on the back of the
sensors. To change the values, click on the number field and enter the
correct serial numbers for the left and right foot sensors, then click
“Done”.
Briefly push the button on the sensors (1sec) to activate their Bluetooth (do not start a
recording). The app shows “Connecting” then “Connected” for both sensors. Install the
sensors on the feet of the subject as suggested above and get ready for the recording.
To start the sensor recording, press the lower right button of the smartwatch once. The
status of the sensors will change to “Ready” and the recording has started.
When pressing the lower button of the watch again, the app stopwatch starts to run.
To stop the recording, press the lower button again, the stopwatch and sensors stop
recording.
3.6 Plug the Physilog®to a computer
For both recording options, data saved on the SD card inside the Physilog® can be
accessed using USB data transfer. Therefore, plug the micro-USB cable end to the
Physilog® and the USB connector to a computer. The Physilog®5 connects to the computer
almost instantaneously and files can be accessed like from a USB key.
3.7 Transfer
One file for each measurement is created and files are stored in folders depending on
creation date (YY_MM_DD for firmware v1.2.2 upwards, DD_MM_YY for firmware v1.1.0).
The file name is composed of a file number (increasing from 1 to 999), the body location (as
defined in the configuration, f.ex. 'LF' for left foot) and the sensor serial number (written on
the back of the sensor). Copy-paste the files to your computer for analysis, a gait
measurement with two sensors generates two files (one per sensor, i.e. one per foot).
Retrieve the corresponding files from the memory of each sensor and store the file pairs
from the gait test in the same folder on the computer to be analysed together. From here
you can also rename folders and files or delete the files from Physilog®'s memory.

Gait Up SA
EPFL Innovation Park, Bat C. CH-1015 Lausanne
www.gaitup.com
TVA CHE-145.136.760
PhysiGait Lab user manual v1.3.1 Date: 29.04.2019
Copyright ©2018, All Rights Reserved - Gait Up SA. CH-1015 SWITZERLAND 7
Do not remove the conf.bin file which contains the configuration information,
otherwise the Physilog® will not be able to record any data. If this happens,
recreate a configuration using the Research ToolKit or contact Gait Up's
support (www.gaitup.com/support). If the sensors still work with firmware
v1.0.4 also do not remove the “slave.txt” file without which the two sensors
will not synchronise any more. For firmware v1.1.0 upwards, a default
configuration based on original configuration is created to compensate the
removal of the conf.bin file and the “slave.txt” file is no longer needed.
4. Analyse the data
The software of the PhysiGait Lab version is stored on a USB key. Its license is linked to
the USB key hardware and therefore it is only possible to start the software from the USB
key. This USB key does not require you to install the software on a computer and allows you
to use the software when plugged to any compatible computer.
To start the analysis, plug the USB keyto your computer, eitherWindows or Mac, and double
click on the software icon in the folder corresponding to your operating system. The software
start screen is shown below.
Click on the “Analyse” button in order to select one or two gait files recorded with Physilog®5.
When selecting two files they must come from the same trial (e.g. synchronous acquisition
of left and right foot). Loading two files at the same time allows to obtain symmetry and
double stance results.
The software outputs a pdf and/or Excel report (depending on the selected options) with
results of 25 gait parameters.

Gait Up SA
EPFL Innovation Park, Bat C. CH-1015 Lausanne
www.gaitup.com
TVA CHE-145.136.760
PhysiGait Lab user manual v1.3.1 Date: 29.04.2019
Copyright ©2018, All Rights Reserved - Gait Up SA. CH-1015 SWITZERLAND 8
4.1 Gait Analysis options
The “Options” button allows to expand the window to show the available options for the gait
analysis which are briefly explained here.
To analyse forward gait without extrinsic
variations, you can exclude a chosen number of
the first and last cycles and the turns. We
recommend to discardtwo stepsfor initiation and
termination (Yuancheng J. et al. 1993).
For foot clearance analysis, the shoesize (from
heel to tip) needs to be specified in cm. Make
sure to measure this parameter if you are
interested in clearance parameters.
An Excel file and/or a pdf report can be
generated by the software. The pdf gives the
statistics of all the parameters and the excel file
provides in addition the values per cycle. The pdf
report can be generated in several languages.
At the bottom partyou can add information about
the subject performing the gait test and
additional Remarks appearing at the top of the
pdf report.
5. Practical Considerations
5.1 Charging Physilog®5
The Physilog®5 is charged via the microUSB port. Plug the microUSB connector of the
delivered cable to the Physilog®5. Plug the USB connector to a Computer or Charger
(voltage specifications: 5V, 100mA). Physilog®5 must be turned off for charging. Do not
charge Physilog® when room temperature is outside of range 0°C to 45°C.
Low battery level is indicated by orange blinking during measurement or if the Physilog®
blinks rapidly 3 times red when starting and doesn't start the recording. When the Physilog®
is discharged, plug it for charging for at least 30 minutes before use. An estimation of the
battery level of the Physilog®5 can be obtained inside the Android companion application
(free to download from www.gaitup.com/support).
5.2 Physilog®5 configuration for gait measurements
The configuration of Physilog®5 can be modified using the Research ToolKit software or the
companion Android Application. This allows to optimise the sensor settings for different

Gait Up SA
EPFL Innovation Park, Bat C. CH-1015 Lausanne
www.gaitup.com
TVA CHE-145.136.760
PhysiGait Lab user manual v1.3.1 Date: 29.04.2019
Copyright ©2018, All Rights Reserved - Gait Up SA. CH-1015 SWITZERLAND 9
applications. For gait measurements the configuration must be set to the values indicated
below, otherwise the software cannot analyse the data.
Sensor
Sampling rate
Sensor range
Accelerometer
128Hz
+/-4 g or +/- 8 g
Gyroscope
128Hz
+/- 1000 deg/s
Barometer
0-64Hz (any sampling rate)
-
The two sensors must also be synchronised together, therefore one of the sensors should
store an empty text file called “slave.txt” which indicates that it is the “slave” sensor, the
second sensor does not have such a file and is thus the “master” sensor. The correct
configuration is pre-installed when you order a PhysiGait Lab, so you don't need to modify
the configuration of the Physilog®5.
5.3 How to update the software on USB key
The software on the USB key can be updated to the latest version using the “Gait Analyser
Updater” which can be downloaded for free from www.gaitup.com/support. Install the
updater software on your computer, start the updater software and plug your USB key with
PhysiGait Lab software. By following the instructions provided by the software, your USB
key will automatically be updated with the latest software version. The computer needs to
be connected to the internet to download the new version. Free updates are included in the
first year after purchase, for later updates an extension can be purchased. If the update
doesn't work, please contact Gait Up's customer service (via contact form on
www.gaitup.com/support or via email: [email protected]).
5.4 Handling / Maintenance
Physilog®5 should be handled carefully. In particular, it should not receive shocks, such as
fall, crushing, being hit etc. Do not press forcefully on the on/off button, this can damage the
button.
Warning: Do not use or charge the Physilog® if the sensor or its case is
damaged. Contact Gait Up about what further action is needed when the case
is damaged. In case the battery is damaged immediately move the device
away from flammable materials and contact Gait Up's customer support.
Sensors can be placed on the foot in any orientation, it will not influence gait
measurements
To benefit from the maximal battery life, fully charge Physilog® sensors before doing
measurements (LED shines green when connected to computer or charger, you canalso
check the battery level with the Physilog®5 companion Android Application available on

Gait Up SA
EPFL Innovation Park, Bat C. CH-1015 Lausanne
www.gaitup.com
TVA CHE-145.136.760
PhysiGait Lab user manual v1.3.1 Date: 29.04.2019
Copyright ©2018, All Rights Reserved - Gait Up SA. CH-1015 SWITZERLAND 10
www.gaitup.com/support).
Copy trial recordings to your computer: Physilog® is not the best place to keep and save
important data. Gait Up cannot be hold responsible if data stored on the sensor are lost.
Physilog®5 can be used outside. Do not use Physilog®5 to measure water-sport
activities without additional waterproofing.
Storage: Store in a cool (0°C –30°C) and dry place. The provided box is the perfect
place for your sensor.
Cleaning: Sensors can be cleaned gently using alcohol wipes. Before you clean the
device make sure it is turned off and disconnect all cables. Alcohol used in excess may
damage the sensor’s waterproofing. Make sure to use wipes and not put liquid alcohol
directly on the sensor. Do not clean the USB entry with alcohol.
Each sensor is individually calibrated by Gait Up and they do not need yearly
recalibration for gait measurements.
Do not throw Physilog® sensors in the normal trash, dispose of it properly considering
local laws and rules about electronic waste and batteries. Contact Gait Up’s customer
support for more information about elimination of Physilog®.
Make sure to know which Physilog® file corresponds to which trial for your analysis –
First digits of file name are automatically incremented (exceeding 999 and new date
resets the increment back to 1). Note that date of file generation (recorded between one
start and stop of the Physilog®) is visible in the XLS file and the Matlab structure “header”.
If you wish to adapt internal date and time of the Physilog®, read the corresponding
section of the user manual of Physilog®5.
Do not remove the “conf.bin” file from the Physilog, otherwise it will create empty files
(no sensor activated). If this happens, recreate a configuration in the Research ToolKit
software or contact Gait Up's customer support. For firmware v1.1.0 upwards, a default
configuration based on original configuration is created to compensate the removal of
the conf.bin file and the “slave.txt” file is no longer needed.
Do not introduce pointyobjects into the small hole besides the USB entry, this irreversibly
damages the waterproofing of the sensor.

Gait Up SA
EPFL Innovation Park, Bat C. CH-1015 Lausanne
www.gaitup.com
TVA CHE-145.136.760
PhysiGait Lab user manual v1.3.1 Date: 29.04.2019
Copyright ©2018, All Rights Reserved - Gait Up SA. CH-1015 SWITZERLAND 11
Safety information
•Physilog®5 includes a lithium battery. This battery may only be charged over a limited temperature
range. Never attempt to dock or charge your Physilog® when the temperature is outside of the range
of 0 to 45°C.
•Physilog®5 should be charged through USB connection with a computer. An external charger may be
used; note that no charger is provided by Gait Up. Gait Up declines any responsibility due to charger
usage.
•Supply voltage should be as follows: DC, 5V. Current consumption is 100mA. All external circuits
connected to the Physilog®5 should be «Safety Extra Low Voltage» and «limited Power Sources»
circuits as described in the following standards: IEC60950-1:2005+/A1:2010 & EN60950-
1:2006+/A11:2009+/A1:2010+/A12:2011
Warnhinweise:
•Physilog®5 enthält eine Lithium Batterie. Die Batterie soll nur in einer definierten Temperaturspanne
aufgeladen werden. Versuchen Sie nie Ihren Physilog® an den Computer anzuschliessen oder
aufzuladen, wenn die Aussentemperatur nicht zwischen 0°C und 45°C ist.
•Sensoren sollen durch eine USB Verbindung mit einem Computer aufgeladen werden. Ein externes
Ladegerät kann benutzt werden; Gait Up empfiehlt und liefert aber kein externes Ladegerät. Gait Up
übernimmt keine Haftung falls ein Ladegerät gebraucht wird.
•Die erlaubte Netzspannung ist: DC, 5V. Stromaufnahme beträgt 100mA. Alle an den Physilog®5
angeschlossenen externe Stromkreise sollen die «Sicherheitskleinspannung” und “mit begrenzter
Leistung” Regeln erfüllen, die in den folgenden Normen beschrieben sind: IEC60950-
1:2005+/A1:2010 und EN60950-1:2006+/A11:2009+/A1:2010+/A12:2011
Informations relatives à la sécurité:
•Physilog®5 contient une batterie au lithium. La batterie ne doit être chargée que si la température
extérieure est dans les limites définies. N’essayez jamais de connecter ou charger votre Physilog®5
si la température ambiante est en dehors des limites de 0 à 45°C.
•Physilog®5 doit être chargé par une connexion USB avec un ordinateur. Un chargeur externe peut
être utilisé; mais Gait Up ne livre et ne recommande pas de chargeur. Gait Up refuse toute
responsabilité liée à l’utilisation d’un chargeur externe.
•La tension de réseau devrait être: DC, 5V. La consommation de courant est de 100mA. Tout circuits
connectés à Physilog®5 doivent être «très basse tension de protection» et «source à tension limité»
comme décrit dans les normes suivantes: IEC60950-1:2005+/A1:2010 et EN60950-
1:2006+/A11:2009+/A1:2010+/A12:2011

Gait Up SA
EPFL Innovation Park, Bat C. CH-1015 Lausanne
www.gaitup.com
TVA CHE-145.136.760
PhysiGait Lab user manual v1.3.1 Date: 29.04.2019
Copyright ©2018, All Rights Reserved - Gait Up SA. CH-1015 SWITZERLAND 12
5.5 Troubleshoot
Soft reset
The soft reset is the first manipulation which can be done if the Physilog® is not working
properly. To do a soft reset, hold the main button for 15 seconds. The LED shines orange
and then stops. If the problem persists, fill out the contact form on the support page
(www.gaitup.com/support) or write an email to: [email protected]. Please indicate
Physilog® serial number and describe the problem in as much detail as possible.
LED indications
Situation
Description
Meaning
Connected via USB
Green continuous
Fully charged
Orange blinking
Charging
Multicolor blinking
Data transfer
Red continuous
Error 1
During standalone
measurement
Green blinking
Measuring
Green continuous
Waiting for synchronization
Orange blinking
Low battery
During measurement
started from
application
Green blinking (2 flashes per blink)
Measuring and sending data
to application
Orange blinking (2 flashes per blink)
Measuring, connection to
application to send data lost
Green/orange blinking (1 green, 1 orange flash per
blink)
Measuring and sending data
to application with low battery
Error indications
2 rapid red blinks, pause –repeated 3 times in total
Error 2
3 rapid red blinks, pause –repeated 3 times in total
Error 3
4 rapid red blinks, pause –repeated 3 times in total
Error 4
5 rapid red blinks, pause –repeated 3 times in total
Error 5
6 rapid red blinks, pause –repeated 3 times in total
Error 6
Troubleshoot for error indications
Error Type*
Troubleshoot
Error 1
Disconnect and replug the Physilog®
Error 2
Contact Gait Up
Error 3
Charge the Physilog®
Error 4
Contact Gait Up
Error 5
Contact Gait Up
Error 6
Empty the memory card
*see LED indication above

Gait Up SA
EPFL Innovation Park, Bat C. CH-1015 Lausanne
www.gaitup.com
TVA CHE-145.136.760
PhysiGait Lab user manual v1.3.1 Date: 29.04.2019
Copyright ©2018, All Rights Reserved - Gait Up SA. CH-1015 SWITZERLAND 13
6. Gait Parameter Overview
Below you canfind the description of the spatio-temporal output parameters of the PhysiGait
Lab system.
6.1 Essentials
The report directly accessible after the gait test from the tablet contains 3 essential gait
parameters with a colour-bar situating the result with respect to reference data. The values
are based on the result of the right foot of the patient.
Speed [m/s], the walking stride velocity is the mean speed of forward walking,
calculated in meters per second.
Variability [%] is the coefficient of variation of cycle duration in percent. It is
calculated as SD/mean and is only computed when 10 gait cycles or more are
analysed.
Asymmetry [%] is the ratio of swing which compares the time in the air for the two
feet, in percent. A perfect symmetry outputs a value of 0%. The asymmetry is
calculated as:    
󰇛󰇜
6.2 Temporal Analysis
Cycle time [s] is the absolute recording time when the heel strikes the
ground. If you are recording a trial with several exercises of particular
duration (30s, 1min, …), it can help you find the moment where the patient
changes exercise within the entire trial. It is however still recommended to
create one file per trial as mentioned in section 3.3.
Cycle duration [s] is the duration of one cycle (from heel strike to heel
strike of the same side).
Cadence [steps/min] is the number of cycles in a minute. Cadence is
different from speed, since a small person may have to walk with a higher
cadence to have the same speed than a much taller person.
Stance [%] is the portion of the cycle during which part of the foot touches
the ground. Normal stance is around 60% of gait cycle duration.
Swing [%] is the portion of the cycle during which the foot is in the air and
does not touch the ground. Normal swing is about 40% of gait cycle duration.
Loading phase [%] is the portion of the stance between the heel strike and
the foot being flat on the ground.

Gait Up SA
EPFL Innovation Park, Bat C. CH-1015 Lausanne
www.gaitup.com
TVA CHE-145.136.760
PhysiGait Lab user manual v1.3.1 Date: 29.04.2019
Copyright ©2018, All Rights Reserved - Gait Up SA. CH-1015 SWITZERLAND 14
Foot-flat phase [%] is the portion of the stance where the foot is fully flat
on the ground.
Pushing phase [%] is the portion of the stance between the foot being flat
on the ground and the toe leaving the ground at take-off.
6.3 Spatial Analysis
Stride Length [m] describes the distance between two successive
footprints on the ground, from the heel of a foot to the heel of the same foot,
one cycle after.
Stride Velocity [m/s] is the forward speed of one cycle. See “Speed” in
essentials.
Peak Angle Velocity [deg/s] is the maximum angular velocity during the
swing phase, between max heel clearance and min toe clearance.
Measured by the gyroscopes, this parameter is a rawsensor measure which
is not subject to any calculation errors. It can be used as a robust asymmetry
measure.
Maximal Swing Speed [m/s] is the maximum forward speed of the foot
during swing. This speed is usually obtained around minimal toe clearance
and it is usually equal to more than3 times walking speed.
Strike Angle [deg] is the angle between the foot and the ground at heel
strike, on a vertical plane.
Lift off Angle [deg] is the angle of the foot at the end of the push phase,
just at take-off.
Swing Width [m] is the maximal lateral excursion of the foot during swing
phase. It is the maximum lateral distance between the forward path and the
real path of the foot.
3D Path Length [% stride length] is the length of the real path of the foot
during one cycle in 3D space, including both stride length and swing width.

Gait Up SA
EPFL Innovation Park, Bat C. CH-1015 Lausanne
www.gaitup.com
TVA CHE-145.136.760
PhysiGait Lab user manual v1.3.1 Date: 29.04.2019
Copyright ©2018, All Rights Reserved - Gait Up SA. CH-1015 SWITZERLAND 15
6.4 Turning Analysis
Turning Angle [deg] is the angle between two consecutive foot-flat phases
of the same foot on a horizontal plane. When this parameter is above 20°
for one cycle, it is considered as a turn. It can be discarded to evaluate only
straight walking.
6.5 Clearance Analysis
Note that clearance parameters are accurate when shoe size (not foot size) is entered in
the menu of the software prior to performing data analysis. Clearance calculation is based
on a biomechanical model and may not be estimated in case of severe gait pattern
alterations (shuffling etc…), See Mariani et al., 2012 and Dadashi et al., 2014.
A B C D
A: Max. Heel Clearance [m] is the maximal height above the ground reached by the heel
during each cycle.
B: Max. Toe Clearance 1 [m] is the maximal height above the ground reached by the toes
just after heel max clearance.
C: Min. Toe Clearance [m] is the minimum height of the toes during swing phase.
D: Max. Toe Clearance 2 [m] is the maximal height above the ground reached by the toes
just before heel strike.

Gait Up SA
EPFL Innovation Park, Bat C. CH-1015 Lausanne
www.gaitup.com
TVA CHE-145.136.760
PhysiGait Lab user manual v1.3.1 Date: 29.04.2019
Copyright ©2018, All Rights Reserved - Gait Up SA. CH-1015 SWITZERLAND 16
7. Limited Warranty & Support Policy
Warranty:
Gait Up offers 12 months parts and labour on Physilog® starting from the date of delivery. If within one year
from the date of delivery to the customer the equipment does not comply with the foregoing Limited warranty,
Gait Up will at Gait Up’s option, repair, replace or refund the purchase price of the defective equipment free of
charge to the customer. Customers requesting repair, replacement or refund are required to ship, the
Physilog® to Gait Up. As a condition of this warranty, customers must contact Gait Up’s customer service for
instructions on and approval of shipment prior to returning any defective Physilog®. The warranty shall not
apply to any product or component thereof which has been repaired or altered by anyone other than Gait Up
in any manner so as, in Gait Up’s judgement, to affect its service ability, or any product been subject to
alteration, accident, misuse, abuse, neglect or abnormal wear. Gait up warrants solely to the original purchaser
(customer). Only the terms expressed in this warranty shall apply and no distributor, corporation or individual
is authorized to amend, modify or extend this warranty in any way.
Gait Up shall have no liability for any consequential, incidental or special damages by reason of any act or
omission or arising out of or in connection with the equipment or its rental, delivery, installation, maintenance,
operation, performance or use, including without limitation any loss of use, lost revenue, lost profits or a cost
associated with downtime. The obligations contained in this paragraph continue beyond the term of this limited
warranty.
Physilog® and PhysiGait Software are not considered as proper Medical Devices, since they do not support
directly diagnosis, but they provide data which have to be analysed and approved by medical doctors for them
to make their diagnosis. Reclamations regarding medical devices will not be considered.
Support Policy:
Support does not include:
support for 3rd party hardware, software, mailing lists or web content
writing or debugging customer applications and deployments
detailed explanations of the engineering principles behind our software and hardware
support for systemic problems beyond the scope of the actual Physilog® and existing systems software
(IT issues, computer operation)
support for customers whose conduct fails to meet professional standards
Occasionally we engage in more interactive support or consulting. Interactive support is a customer courtesy
and is provided at Gait Up’s discretion. It does not invalidate the support policy described above. There is no
guarantee of performance, timeliness, or establishment of a continuous support relationship. Consulting is
subject to acceptance of a formal statement of work.

Gait Up SA
EPFL Innovation Park, Bat C. CH-1015 Lausanne
www.gaitup.com
TVA CHE-145.136.760
PhysiGait Lab user manual v1.3.1 Date: 29.04.2019
Copyright ©2018, All Rights Reserved - Gait Up SA. CH-1015 SWITZERLAND 17
8. Certification claims for Physilog®5 sensors
IC Statement
Under Industry Canada regulations, this radio transmitter may only operate using an antenna of a type and maximum (or
lesser) gain approved for the transmitter by Industry Canada. To reduce potential radio interference to other users, the
antenna type and its gain should be so chosen that the equivalent isotropically radiated power (e.i.r.p.) is not more than
that necessary for successful communication. This device complies with Industry Canada licence-exempt RSS standard(s).
Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must
accept any interference, including interference that may cause undesired operation of the device. This device complies
with Industry Canada radiation exposure limits set forth for general population. This device must not be co-located or
operating in conjunction with any other antenna or transmitter.
Conformément à la réglementation d'Industrie Canada, le présent émetteur radio peut fonctionner avec une antenne d'un
type et d'un gain maximal (ou inférieur) approuvé pour l'émetteur par Industrie Canada. Dans le but de réduire les risques
de brouillage radioélectrique à l'intention des autres utilisateurs, il faut choisir le type d'antenne et son gain de sorte que
la puissance isotrope rayonnée équivalente (p.i.r.e.) ne dépasse pas l'intensité nécessaire à l'établissement d'une
communication satisfaisante. Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils
radio exempts de licence. L'exploitation est autorisée aux deux conditions suivantes : (1) l'appareil ne doit pas produire de
brouillage, et (2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est
susceptible d'en compromettre le fonctionnement. Le présent appareil est conforme aux niveaux limites d’exigences
d’exposition RF pour la population globale définies par Industrie Canada. L’appareil ne doit pas être installé à proximité ou
être utilisé en conjonction avec une autre antenne ou un autre émetteur.
FCC statement
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device
may not cause harmful interference, and (2) this device must accept any interference received, including interference that
may cause undesired operation.
(a) (5) When the device is so small or for such use that it is not practicable to place the statement specified under paragraph
(a) of this section on it, the information required by this paragraph shall be placed in a prominent location in the instruction
manual or pamphlet supplied to the user or, alternatively, shall be placed on the container in which the device is marketed.
However, the FCC identifier or the unique identifier, as appropriate, must be displayed on the device.
NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part
15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a
residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and
used in accordance with the instruction, may cause harmful interference to radio communications. However, there is no
guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to
radio or television reception which can be determined by turning the equipment off and on, the user is encouraged to try
to correct interference by one or more of the following measures: - Reorient or relocate the receiving antenna. - Increase
the separation between the equipment and receiver. - Connect the equipment into an outlet on circuit different from that to
which the receiver is connected. - Consult the dealer or an experienced radio/TV technician for help.
This device complies with FCC radiation exposure limits set forth for general population. This device must not be co-located
or operating in conjunction with any other antenna or transmitter.

Gait Up SA
EPFL Innovation Park, Bat C. CH-1015 Lausanne
www.gaitup.com
TVA CHE-145.136.760
PhysiGait Lab user manual v1.3.1 Date: 29.04.2019
Copyright ©2018, All Rights Reserved - Gait Up SA. CH-1015 SWITZERLAND 18
Contact information
At Gait Up, we welcome your feedback and questions.
Please contact us at:
EPFL Innov’ Park - C
CH-1015 Lausanne
tel: [phone]
mail: [email protected]
web: www.gaitup.com
Document
Version
Changes
Responsible
Date
1.0.0
Initial release to public
Rebekka Anker
12 April 2017
1.1.0
Update related to firmware 1.1.0:
- continuous synchronisation
- How to update USB key
- Added Warranty & Support policy
Rebekka Anker
31 May 2017
1.1.1
Reformat, new pictures, addition of
asymmetry formula, adaptations with
respect to new version (v5.1.1)
Rebekka Anker
17.10.2017
1.2.0
- Reformat
- Sensor charging voltage
specifications updated
Rebekka Anker
18.06.2018
1.3.0
Change name to PhysiGait Lab
Jules Gellaerts
12.12.2018
1.3.1
Add pdf report language selection
option
Rebekka Anker
29.04.2019