SYSTEMForce Block sensor
A load cell built to be trusted.
The Force Block measures tension up to 500 kg and streams it over Bluetooth Low Energy at roughly 250 samples per second. That rate is what makes rate-of-force-development metrics at 100, 200 and 300 ms possible; slower sensors can only estimate them.
01Measurement discipline
Three habits the app enforces so the number holds up.
Zero
Verified before every effort
Before each test or exercise the app commands a fresh device zero, then confirms the baseline from independent sample windows. A zero from an earlier connection is never reused. Pretension or movement before GO is flagged and the explosive metrics are withheld rather than reported wrong.
Signal
Quality graded per attempt
Effective sampling rate and continuity are assessed on every attempt. Peak rate of force development is reported only at the highest signal tier; approximate metrics are labelled as approximate.
Calibration
Known-mass check per sensor
Each Force Block carries its own calibration factor, verified against a known mass. Force is stored internally in Newtons and displayed in kg, N or lb, so a 173 kg readout means what a scale would say.
02Setups
Anchors to what your facility already has.
Every built-in exercise carries a setup note: where the strap goes, where the handle sits, the joint angle to hold. The app recalls pin, seat and angle from the last session so a test repeats exactly.
Exercise library
26 built in. Unlimited custom.
Lower body, upper body, trunk and neck. Unilateral exercises track left and right separately so symmetry is computed, not guessed. Rehabilitation exercises ship with conservative intensity ceilings the clinician can override.
Optional wall rig
Repeatability you can bolt to concrete.
A wall-mounted upright with numbered pin positions and six test presets. Pin number and seat height are stored with every attempt, so a return-to-sport test in March is set up exactly like the baseline in January. Available on request.
- Numbered pin positions recorded per attempt
- Fixed-angle testing for quadriceps, hamstring and mid-thigh pull
- One station for a full testing day
03Compatibility
Runs on the phone already in the coach's pocket.
| Sensor connection | Bluetooth Low Energy · one Force Block per device at a time |
|---|---|
| App platform | Android 8.0 or later · phone or tablet · cast to a TV for group sessions |
| Display units | kg (default) · N · lb — selectable per organisation |
| Works offline | Yes. Sessions save on the device and sync when a connection returns. |
| Demo mode | A simulated Force Block lets staff learn every screen without hardware attached. |
| Accounts | Owner, admin, coach and athlete roles · unlimited clients per organisation |
| Included | Force Block sensor · Iso Trainer app licence for your organisation · staff training · free delivery · 1-year warranty |
Full metric, protocol and platform tables on the specifications page.