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USER

GUIDE

Activforce 2 provides real-time strength and range of motion measurements to quantify patient progress in medical applications, such as physical therapy and muscle rehabilitation. Activforce 2 functions as a handheld device to provide force and angle measurement when connected to an easy-to-use mobile companion application. When combined with consistent testing techniques and methodologies, Activforce 2 provides accurate, repeatable force and range of motion measurements.

Product Guide for U.S.

Activforce 2 Components

  • Activforce 2 Device

  • Activforce 2 Mobile Application

  • Activforce 2 Dashboard

  • Rounded Pad

  • Arched Pad

  • Foam Insert

  • Silicone Cover

  • Hand Strap

  • Leg Strap

  • Belt

  • Belt Loop Plate

  • Custom Carrying Case

Activforce 2 Components
Activforce2 Walkthrough Video Screenshot.png

Activforce 2
Walkthrough Video

Activforce 2 Walkthrough Video

Connecting the Device
to the Mobile Application

Software Version 1.2.5 (181)

1. Turn on the device by pressing and holding the device button until you see a blue LED flashing.

A BLUE flashing light indicates that the Activforce 2 device is available for a Bluetooth® connection to the companion mobile application.

2. Bluetooth needs to be turned ON for the phone or tablet. If it is OFF, the app will remind you to turn it ON.

3. In the Activforce 2 app, start a measurement or select "Connect Device" in the settings menu. A list of available devices will be shown in the app. Tap "Connect" next to your Activforce 2 device in the list.

4. When the Bluetooth connection is established, the device LED will flash green periodically.

A GREEN flashing light indicates the Activforce 2 device is connected to the companion mobile application.

5. The app offers two main types of tests and associated reports:

  • Force Measurements: Strength tests with left and right side options that report  measurements in pounds, kilograms, or Newtons.

  • Range of Motion Measurements: Active and passive options to obtain angle measurements in 3D space.

  • A Settings menu is available to set test parameters such as test duration, number of tests, and measurement units. A "Contact Us" page is also available to send a message to Activbody Customer Support.

6. Turn off the device by pressing and holding the button until you see a red LED blink.

Multiple RED continuous flashing lights indicate a low battery charge level and the battery needs replacement. A single RED flash indicates that the device has been turned off.

Note: Always start the app and pair the device through the in-app “Connect” dialog in the app. Pairing the device through your mobile device’s Settings screen without pairing in the app will result in an error. If an pairing error occurs: close the app, turn off Bluetooth in your device’s Settings, turn Bluetooth back on, and pair the device again through the app.

Connecting the Device to the Mobile Application

Using the Activforce 2 Mobile Application

Using the Activforce 2 Mobile Application

Downloading the Application

Download the Activforce 2 mobile application from the Apple or Google Play Store.

Creating an Account 

If you’re using Activforce 2 for the first time, you will need to create an account. Enter your email address, choose a password, and press create account.

Review and accept the terms and conditions as well as the privacy agreement. Choose to opt in or out of newsletters and product updates. Tap Accept to start account activation.

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An Activforce 2 device is required for this step.

 

When you connect the Activforce 2 via Bluetooth, your account will be activated. This step requires your mobile device’s Bluetooth and Location services may need to be on. Bluetooth is mandatory while Location services are optional for Android versions (12 and 13), and mandatory for older versions (under 12).

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First-time Tutorial

The next three screens will walk you through the use of the main features of the app (angle measurement, strength measurement, summary screen). The fourth screen concludes the tutorial and prompts you to select your default settings for the app.

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Selecting Default Settings

If it is your first time using the app, you will be prompted to select default settings for the app. These can be updated any time in the Settings menu. 


First, set your Country or Region.

Second, set your preferred unit of measurement: Imperial (lb), Metric (kg), Newton (N).

Next, set the number of strength tests you want to do for each motion.

Next, set the duration of time (in seconds) for each strength test.

Finally, the app will ask you if you would like to allow the sharing of anonymous data to help improve Activforce 2.

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Signing In

If you already have an Activforce 2 account, enter your email address and password to sign in. If you don’t remember your password, click on the “Forgot Password?” link.

Home Screen

Upon signing in, you will see the Activforce 2 home screen. Choose the type of measurement you want to perform: Range of Motion or Strength.

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Range of Motion Measurements

The Activforce 2 app can obtain angle measurements in 3D space from a starting position that is established during the calibration phase. Two types of Range of Motion (ROM) measurement can be conducted: Active Range of Motion (AROM) and Passive Range of Motion (PROM).

 

After selecting Range of Motion from the Home Screen, you can choose to perform an “Active Range of Motion” test, “Passive Range of Motion” test or “Both”. Selecting “Both” will perform an AROM test, followed by a PROM test.

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The Activforce 2 app can obtain angle measurements in 3D space from a starting position that is established during the calibration phase. Two types of Range of Motion (ROM) measurement can be conducted: Active Range of Motion (AROM) and Passive Range of Motion (PROM).

 

After selecting Range of Motion from the Home Screen, you can choose to perform an “Active Range of Motion” test, “Passive Range of Motion” test or “Both”. Selecting “Both” will perform an AROM test, followed by a PROM test.

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If “Both” is selected, you will be asked to select which side to test first. This selection will be applied to all test types previously selected.

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Before the test is started, the test can be named either manually or by selecting suggested joints, movements and positions. The test naming can also be skipped by tapping the “Skip” button at the top right corner.

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Upon reaching the test screen, you can start the ROM measurement by tapping the “Start” button. After pressing the “Start” button, a short calibration phase will commence. Do not press or move the device during the calibration phase.

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The Activforce 2 device is capable of measuring angles in any of the three axes, but only one angle, in a single plane of motion, should be measured for each test. 

 

If more types of measurements or sides are selected, the app will display instructions to prepare for the next test in the sequence (Switch the side or Continue with the position). After the measurement is concluded, tap the “End Test” button.

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The Activforce 2 device is capable of measuring angles in any of the three axes, but only one angle, in a single plane of motion, should be measured for each test. 

 

If more types of measurements or sides are selected, the app will display instructions to prepare for the next test in the sequence (Switch the side or Continue with the position). After the measurement is concluded, tap the “Save and Exit” button. Tapping the "Save and Exit" button will save the report to the signed in account to be accessed from the Activforce 2 Dashboard. Taping the "X" close button will not save the report and it will not be accessible from this account's Activforce 2 Dashboard.

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Strength Measurements

To perform a strength test, select the “Strength” button on the home screen. On the next screen, select which side to test first - Right, Left or N/A (if no side is applicable).

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To perform a strength test, select the “Strength” button on the home screen. On the next screen, select which side to test first - Right, Left or N/A (if no side is applicable).

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Once you reach the test screen, you can start the Strength measurement by tapping the “Start” button. A three second calibration phase will commence. Do not press or move the device during calibration.

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After calibration, a “Go!” label will be shown, indicating that the test can be started by applying force to the device.

Once the test is started, force applied to the device will be displayed in the app. 

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The duration of the test depends on the predefined settings set in the “Settings” screen (defaulted to six seconds). After the test is completed, the app will present a choice: continue with the test and switch to the next side by tapping “Next Side” or perform the measurement again by tapping “Redo Test” which will discard the previous result and restart the measurement process.

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When the “Next Side” button is pressed, the app will display instructions to prepare for the next test and side in the sequence (Switch the side).

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When the last test in the sequence has been completed, you will have two options - see the test results by tapping on the “View Summary” button or perform the last measurement again by tapping “Redo Test” which will discard the previous result and restart the measurement process. Tapping the "Save and Exit" button will save the report to the signed in account to be accessed from the Activforce 2 Dashboard. Taping the "X" close button will not save the report and it will not be accessible from this account's Activforce 2 Dashboard.

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Settings Screen

The “Settings” screen allows you to connect a device, calibrate the device, change the strength and account settings, contact customer support and log out.

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1) The Connect Device option allows you to connect to an Activforce 2 device.

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2) To tare your device  and ensure that the Strength test measurement starts from zero, tap the “Calibrate your device” button and follow the instructions displayed.

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3) The strength settings can be customized in four different ways - Force Unit of Measurement, Weight Unit of Measurement, Number of Tests and Test Duration. The settings can be changed by tapping on the “Strength Settings” button.

  • Force Unit of Measurement - Changing the unit of measurement affects the units displayed in the application. You can select between Imperial, Metric and Newton units.

  • Weight Unit of Measurement - Changing the weight unit of measurement affects the units displayed during the calculation for Force to Weight percentage. You can select between Imperial and Metric units.

  • Number of Tests - This setting allows you to set the number of measurements for each test. You can choose between one and three tests per side.

  • Test Duration - This setting allows you to choose the duration of the strength test. You can choose between three and sixty seconds.

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4) Account Settings

  • Email

  • Email Notifications

  • Data Sharing

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5) Contact Activbody support by tapping the “Contact Us” button.

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6) About

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7) Log out from the current Activforce 2 account by tapping the “Logout'' button. After signing out, the app returns to the welcome screen where you can sign in again.

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Using the Activforce 2 Reports Dashboard

The Activforce 2 dashboard, available at https://activforce.activbody.com, displays saved force and angle measurement test reports. Reports are saved to the dashboard when you use the “Save and Exit” button. Sign in to the Activforce 2 dashboard with the same email and password used in the Activforce 2 mobile app.

Using the Activforce 2 Reports Dashboard

Attaching a Pad To The Device

The locking mechanism is a circle with four wide gaps that securely hold attachments in place through a twist lock mechanism. To secure an attachment to the Activforce 2 device:
(1) Align the attachment teeth with the locking mechanism gaps

(2) Push the attachment teeth down into the gaps

(3) Twist the attachment clockwise (toward the locked symbol) a full quarter turn
(4) When locked, the attachment will remain in place

To release the attachment, twist the attachment counter-clockwise (toward the unlocked symbol) and lift the teeth out of the locking mechanism.

Proper Usage of the Activforce 2 Device

Attaching a Pad To The Device
Proper Usage of the Activforce 2 Device

Measuring Force

The Activforce 2 device measures accurately when force is applied in a perpendicular direction to the large surface areas of the device or an attached pad. Application of the force should be in the center of the surface as much as possible. Direct all force into the device directly perpendicular through the device center point. 

 

  • Do not apply force in a non-perpendicular direction to the device.

  • Do not apply force at an angle or in a direction going across (parallel to) the device.

  • Do not apply force on or near to the blue band of the device.

  • Do not apply a force during the three second calibration period before the application starts the force measurement.

  • Do not move or shake the device during the force measurement.

Measuring Range of Motion

The Activforce 2 device can also measure angular displacement for range of motion testing. While the device is calibrating, make sure that the device is being held still in the starting position.

 

  • Do not rotate the Activforce 2 device in multiple axes during a measurement.

  • Do not move the Activforce 2 device in multiple planes of motion during a measurement.

  • Do not rotate the device during the brief calibration period before the application starts the range of motion measurement.

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Place the device and/or subject into the starting position for test measurement and press the “Start Test” button. After calibration, move the device from the starting position (Position 1) to ending position (Position 2) through ONE plane of movement only (frontal, horizontal, or sagittal).