User Guide

ActiGraph wGT3X-BT + ActiLife
TM

Activity Monitor: ActiGraph wGT3X-BT | Revision: A | Released: 01/12/2016
TM

User Guide

ActiGraph wGT3X-BT + ActiLife
TM

Activity Monitor: ActiGraph wGT3X-BT | Revision: A | Released: 01/12/2016
TMContents
Overview…………………………………………………………………………………………………………………………………………………………………
What You’ll Need…………………………………………………………………………………………………………………………………………………………
Getting Started……………………………………………………………………………………………………………………………………………………………
Setup & Initialization………………………………………………………………………………………………………………………………………………………
Deployment & Information for Subjects…………………………………………………………………………………………………………………………………
Downloading the Data……………………………………………………………………………………………………………………………………………………
Care & Storage………………………………………………………………………………………………………………………………………………………………

234691113Overview
ActiGraph wGT3X-BT
TM

The wGT3X-BT is ActiGraph’s flagship activity monitor, used by researchers around the world to capture andrecord continuous, high resolution physical activity and sleep/wake information.
The wGT3X-BT is a body worn device that measures and records physical movement associated with daily activityand sleep. The wGT3X-BT is intended for use in applications where quantifiable measurement and storage ofphysical movement is desired.

wGT3X-BT Technical Details
ActiGraph wGT3X-BT activity monitors contain a 3-axis MEMS accelerometer with a dynamic range of +/- 8 G.
Acceleration data are sampled by a 12 bit analog to digital converter at user specified rates ranging from 30 Hz to
100 Hz and stored in a raw, non-filtered/accumulated format in the units of gravity (G’s). Data are stored directly
into a non-volatile flash memory.

Bluetooth® LE

Ambient Light Sensor

Enables wireless device features (heart rate monitoring, proximitydetection) and communication with ActiGraph mobile applications.

Provides minute-by-minute light intensity values (in lux) alongsideactivity information, helpful for examining the relationship betweenenvironment and activity and sleep behaviors.

Wear time sensor
Automatically detects if a wrist worn device has been removed forsimplified compliance monitoring and data cleaning.

Specifications
Dimensions

3.3 x 4.6 x 1.5 cm

Dynamic range+/- 8G

19 grams

Communication

USB, Bluetooth® LESample rate

30-100 Hertz

Water resistanceBattery life

25 days*

WeightData storage/Memory

240 days/4 GB

Wear location
Warranty

1 meter, 30 min.
Wrist, waist, ankle, thigh1 year* Wireless disabled, 30 Hz sample rate

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What You’ll NeedwGT3X-BTActiLife software (version 6.11.5 or higher)

Triangle Tool

USB Cables

Or3Wrist Band

Waist Belt

Heart Rate Monitor (Optional)

USB Charging Hub and Cables (Optional)

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Getting Started

1

Install ActiLife software
You must be running ActiLife version 6.8.1 or higher to operate thewGT3X-BT device.
1

Go to

http://www.actigraphcorp.com/getactilife
and click the ‘Download’ button. Follow the prompts to install
the ActiLife software on your PC.
2 When prompted, enter the ActiLife license key that wasprovided at the time of purchase to complete the installation.
Note: The ActiLife full version and ActiLife Lite can both be used toinitialize and download data from the wGT3X-BT. However, the ActiLife
full version is required to view and/or process the collected data.
If you will be using the CentrePoint software platform, seeCentrePoint User Manual

2Charge the battery
TMActiGraph wGT3X-BT devices contain a rechargeable lithium
ion battery that should be fully charged before initialization anddeployment to subjects. ActiLife will not initialize a device if thebattery has dropped below a certain level. It takes approximately
three hours to charge a fully depleted battery.
1Unscrew the USB port cover by turning counterclockwise withthe triangle tool.

2 Connect the wGT3X-BT(s) to a PC using the USB cable.
3 While charging, the wGT3X-BT will display a flashing green LED.
4 The device(s) is fully charged once the green LED stays onsteady.

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Getting Started (Continued)
Charging multiple devices
An ActiGraph approved USB charging hub can be used to charge
up to 7 devices simultaneously. Multiple hubs can be used tofurther increase charging capacity.
1Connect hub to power supply and PC using supplied cables.

2 Attach wGT3X-BT devices using supplied USB cables.
Note: A PC and/or software is not required for device charging.
Note: Battery voltage can be checked by opening the ActiLife software,connecting the device, and viewing the ‘Battery’ column in the gridunder the ‘Devices’ tab. Select ‘Refresh’ to update the voltage level
during charging.

Battery life specifications
The wGT3X-BT has several features that impact battery life whenenabled. Estimated battery life for common device configurations
are as follows:
Common Initialization Modes

Expected Battery Life (Days)

30Hz Raw, Idle Sleep Mode Enabled
30Hz Raw, Idle Sleep Mode Disabled
30Hz Raw, Idle Sleep Mode Enabled, BLE Enabled - No HR
30Hz Raw, Idle Sleep Mode Enabled, BLE On with Heart Strap (8hr/day)
80Hz Raw, Idle Sleep Mode Enabled
80Hz Raw, Idle Sleep Mode Disabled

27.0
20.5
14.5
12.5
25.0
18.5

Note: These estimates are based on average device usage parameters.
More frequent use of wireless communication will result in reducedbattery life.

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Setup & Initialization
This section describes how to configure the wGT3X-BT and begin collecting data.
1Open the ActiLife software.

2 Connect the wGT3X-BT to the PC using the USB cable. The monitor(s) will appear in the grid under the ‘Devices’ tab.

3 Select ‘Initialize’. A submenu will open to display several initialization options.
4 Select ‘Regular Initialization’ from the submenu. A dialog box will open to display the initialization parameterslisted below. The most commonly used initialization parameters are pre-selected as system defaults.

Moses (1)Initialization Parameters
Start and Stop Times
Enter the dates and times when the device should start and stop collecting data. If no start time is selected, thesystem defaults to two minutes ahead of the current time. If no stop time is selected, the device will continue
to collect data until the battery is depleted, the memory capacity is full, or it is downloaded and reinitialized.

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Setup & Initialization (Continued)
Device Time
Set device to local computer time or atomic time.

Sample Rate
Select the device sampling rate ranging from 30 to 100 Hz. The sample rate is the number of times per
second that the activity monitor will record data. Note that higher sampling rates will result in higher
data fidelity, but will reduce the device storage capacity and battery life.

LED Options
UncheckedDisables the green LED.

Delay Mode LED
The green LED will flash until the selected start time occurs. The light will stop flashing once thedevice begins collecting data.

Data Collection LED
The green LED will flash during data collection.

Wireless LED
The blue LED will flash during wireless Bluetooth communication (wireless must be enabled).
Note: Increased LED usage will result in decreased battery life
Note: A red LED will flash to indicate low battery regardless of selected LED options.

Wireless Options
Enable Wireless
Activates Bluetooth® functionality.

Heart Rate
Capture heart rate data when device is used with compatible Bluetooth® heart rate monitor. Notethat wireless must be enabled to activate heart rate data collection.

Recording Options
Idle Sleep Mode
When enabled, the device enters a low power state after experiencing 10 seconds of inactivity in orderto preserve battery life. Any subsequent activity will awaken the device. No data loss is incurred.
5 Complete the initialization parameters form and select ‘Enter Subject Info.’
6 Enter subject name, biometric information, and wear position details into the grid. Note that a subject
name is required for initialization, but other biometric and wear details can be entered during download
or data analysis.

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Setup & Initialization (Continued)
7 Select ‘Initialize 1 Device’. A progress bar in the devices grid will indicate when the initialization process iscompleted.
8 After initialization is complete, unplug the wGT3X-BT and replace the USB cap by turning clockwise with thetriangle tool. Be careful not to overtighten.
9 The device will begin collecting data when the selected start time elapses and will continue to collect data
until the stop time occurs (if selected), the battery is depleted, or the device is downloaded and reinitialized.
Note: If the start time elapses before the initialization process is complete, an error message will appear. Simply selectthe ‘Default’ button in the Start Time section to reset the default start time and then select ‘Initialize 1 Device’.
Note: Multiple devices can be initialized simultaneously using one or more ActiGraph approved charging hubs. In
this case, all devices will be programmed with the same initialization parameters and the Subject Info grid will
display serial numbers of all connected devices for assignment.

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Deployment & Information for Subjects

1

Wearing the wGT3X-BT
The wGT3X-BT is typically worn at the waist or on the non-dominant wrist using one of our compatible belts or wrist straps.
The appropriate wear location is dependent on specific research objectives and will be outlined in the study protocol.
Note: The device must be worn at the wrist location to obtain accurate readings from the wear time sensor.
Note: The device must be worn at the wrist location to obtain accurate sleep score information.

Waist worn devices
1

Remove the clip at one end of the elastic waist belt.

2 Thread the belt through the wings on each side of the wGT3X-BT so the belt
lies flat against the back side of the device.
3 Replace the clip and adjust the length as needed.
4 The subject should be instructed to fasten the belt snugly around the waistand position the wGT3X-BT in line with the armpit and knee with the USB
port cover facing up.

Wrist worn devices
1

From above the device, insert the thin end of the wear time wrist strap into
one of wGT3X-BT wings with the velcro side facing out. Pull until the thick endof the wrist strap catches in the wing.

2 Insert the thin end into the opposite wing to create a loop. The strap should
not cover the back of the device.
3 Secure and adjust the wrist strap by folding the excess length outward andfastening to the velcro.					4 The subject should be instructed to wear the device strapped securely to thenon-dominant wrist with the ActiGraph logo facing up when viewed like awrist watch.
Note: The wGT3X-BT can also be worn at the ankle, thigh, chest or other location for
specialized research applications. However ActiGraph does not offer specific wear
accessories for these locations at this time.

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Deployment & Information for Subjects (Continued)
Heart Rate Monitor
To collect heart rate information, the ‘Heart Rate’ option must be enabled duringinitialization and a compatible Bluetooth® wireless heart rate monitor is required.
Unsnap the heart rate transmitter from the chest strap, position the transmitter inthe center of the sternum, and snap back into place. Adjust the strap so that it issecure across the breast bone. The wGT3X-BT will automatically begin collecting
heart rate information when in range of the chest strap.
Note: Application of a water-based lubricant between the skin and transmitter can
improve conductivity and reliability of the heart rate signal.

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Downloading the Data
1

Open the ActiLife software.

2 Connect the wGT3X-BT to the PC using the USB cable. The monitor will appear in the grid under the‘Devices’ tab.
3 Verify the box in front of the device is checked and select ‘Download’ from the taskbar menu.
4 A dialog box will open to display the download options listed below. The most commonly used download
parameters are pre-selected as defaults.

MOS1C32140060

aFile download location
Select where downloaded files will be saved.

bDownload naming convention
Provides a list of file name formats.

cDownload Options:
Create Clinical Report
A customizable PDF report containing summary data will be automatically generated on download.
Subject measures and scoring algorithms can be selected by clicking ‘edit options’.

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Downloading the Data (Continued)
Create AGD File
An AGD file, required for data scoring, will be automatically created on download.

Epoch: Select the desired epoch length for the AGD file. The epoch length represents theamount of time the raw acceleration data is summed after the filter is applied.

# of Axis: Select which axes of data should be included in AGD file.
Note: 1 Axis=Y; 2 Axis=X,Y; 3 Axis=X,Y,Z

Steps: Select to include step count data in AGD file.
Inclinometer: Select to include positional data (standing, sitting, or lying down and when thedevice has been removed) based on device orientation in the AGD file.
Note: The wGT3X-BT must be worn at the hip or attached to the upper thigh for accurate inclinometerreadings.

Low Frequency Extension: Select to apply low frequency filter extension to AGD file.
Note: The Low Frequency Extension option should only be used in very specific use cases where
physical activity is at such a low level that it might otherwise be eliminated with our normal filter. An
example would be very slow shuffling movements, common in elderly populations.
dBiometric and User Information
Subject biometric information can be entered and/or edited. Fields will be pre-populated if thisinformation was entered during initialization.

5 Once Download Options are selected, click ‘Download All Devices’. The dialog box will close and a progress
bar will appear under the ‘Status’ column in the grid.
6 When the download is complete, a ‘finished downloading’ link will appear. Click this link to reveal options toview data, export the raw data file, and navigate to the download folder.
7 Data has now successfully been downloaded from the wGT3X-BT and can be cleaned and scored using theanalysis tools in ActiLife.
Note: Collected data will remain on the wGT3X-BT device until it is reinitialized.

For more information on data scoring and analysis using the ActiLife software, download the ActiLife User’s Manual

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Care & Storage
Cleaning
The wGT3X-BT should be cleaned after each deployment using an alcohol-based solution or wipe. Belts and wrist
straps should be laundered.

StorageIn order to maximize battery life, ActiGraph recommends devices be stored in a partially charged state (40 – 60%
battery capacity is ideal) in low ambient temperatures. The device should never be stored lower than -10OC or
higher than +45OC.

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ActiGraphCorp.com
support@actigraphcorp.com | 850.332.7900 | ©2016 ActiGraph, LLC. All rights reserved.
U.S federal law restricts this device to sale by or on the order of a physician.