k-invent
Measure progress
We help physical therapists and coaches assess progress efficiently and build patient engagement.
Build progress
Numbers you can trust
Obtain precise analytics, validated in scientific studies in rehabilitation and professional sports. Our products are FDA and CE certified.
k-invent range
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Bubble
KFORCE Bubble is an innovative and versatile pneumatic dynamometer transforming pressure variation into a force measurement with the KFORCE APP. You can adapt the device to each type of inflatable cushion equipped with a valve.
- Assess and re-train
- User friendly
- Versatile
Technical details:
- Minimum requirements – Android 5.0+ and iOS 10.0+, Blue-tooth Low Energy
- Weight – 100g
- Dimensions (HxWxD) – 25 x 58 x 56mm
- Wireless range – Up to 20m
- Maximum force – 90kg
- Precision – 500g
- Battery – 5h00 of autonomy, 2h00 for charging
- Acquisition frequency – 75Hz
- Wireless transmission – 2.4 GHz band (Bluetooth Low Energy)



SENS
KFORCE Sens developed by KINVENT is an electronic connected goniometer. KFORCE is an inertial sensor allowing the assessment, monitoring and rehabilitation of the range of motion of the main body joints. KFORCE Sens measures the angle regarding to the zero-starting position of the involved limb for a specific anatomic plane. Easy to use, it works through the KFORCE App.
- Fast assessment
- User friendly
- Real-time biofeedback
Technical details:
- Minimum requirements – Android 5.0+ and iOS 10.0+, Blue-tooth Low Energy
- Weight – 40g
- Dimensions (HxWxD) – 15 x 56 x 35mm
- Wireless range – Up to 10m
- Sensitivity – 5 degrees
- Accuracy – 3 degrees
- Battery – 5h00 of autonomy, 2h00 for charging
- Precision – 100g
- Wireless transmission – 2.4 GHz band (Bluetooth Low Energy)



Link
Use the KFORCE Link for measuring isometric strength and biofeedback training with the KFORCE APP. Perform operator-independent measurements. It can be easily secured to a physiotherapist table, to wall bars or to a pulley system. Link is provided with accessories for turnkey use :
- 2 carabiners
- 2 loop fastening accessories for securing and to the desired limb and to a physiotherapy table, to wall bars or to a pulley system
- 2 different resistance elastics for exercise with resistance
- 1 adjustable rigid strap for the measurement of the maximum isometric force.
- Fast assessment
- User friendly
- Versatile
Technical details:
- Minimum requirements – Android 5.0+ and iOS 10.0+, Blue-tooth Low Energy
- Weight – 600g
- Dimensions (HxWxD) – 154 x 68 x 55mm
- Wireless range – Up to 10m
- Max force – 300kg
- Battery – 12h00 of autonomy, 6h00 for charging
- Precision – 100g
- Acquisition frequency – 75Hz
- Wireless transmission – 2.4 GHz band (Bluetooth Low Energy)



Muscle controller
The KFORCE Muscle Controller is a handy muscle dynamometer equipped with electronic force transducers giving real-time acoustic and optic biofeedback on your smartphone or tablet through the KFORCE APP. It’s perfect for immediate muscle assessment The Muscle Controller is versatile and adaptable to many configurations. The app saves your participant’s results in a database. You can then follow-up his progress on maximal force, endurance and muscular symmetry on the app’s database.
- Fast assessment
- User friendly
- Versatile
Technical details:
- Minimum requirements – Android 5.0+ and iOS 10.0+, Blue-tooth Low Energy
- Weight – 300g
- Dimensions (HxWxD) – 60 x 140 x 80mm
- Wireless range – Up to 20m
- Max force – 90kg
- Battery – 5h00 of autonomy, 2h00 for charging
- Precision – 100g
- Acquisition frequency – 75Hz
- Wireless transmission – 2.4 GHz band (Bluetooth Low Energy)


Grip
KFORCE Grip is a connected dynamometer to measure grip strength in a variety of situations: strength measurement (e.g. grip test), exercises, games, rehabilitation (hand and upper limbs, athlete’s nervous fatigue). The KFORCE App provides real-time bio feedback to monitor the patient’s or athlete’s progress.
- Fast assessment
- User friendly
- Versatile
Technical details:
- Minimum requirements – Android 5.0+ and iOS 10.0+, Blue-tooth Low Energy
- Weight – 200g
- Dimensions (HxWxD) – 141 x 47 x 61mm
- Wireless range – Up to 20m
- Max force – 90kg
- Battery – 5h00 of autonomy, 2h00 for charging
- Precision – 100g
- Acquisition frequency – 75Hz
- Wireless transmission – 2.4 GHz band (Bluetooth Low Energy)



Plates
KFORCE Plates enables measurement of static and dynamic balance in a wide range of movements (Stance, Squats, Counter Movement Jump). Resistant and lightweight, ideal for assessment and exercise in proprioception.
- Assess and exercise
- Compact
- User friendly
- Versatile
Technical details:
- Minimum requirements – Android 5.0+ and iOS 10.0+, Blue-tooth Low Energy
- Weight – 1600g
- Dimensions (HxWxD) – 330 x 170 x 30mm per plate
- Wireless range – Up to 20m
- Max force – 300kg per plate (600kg per pair)
- Battery – 12h00 of autonomy, 6h00 for charging
- Precision – 500g
- Acquisition frequency – Up to 75Hz
- Wireless transmission – 2.4 GHz band (Bluetooth Low Energy)




Delta plates
These force platforms are dedicated to the advanced biomechanical analysis of sports performance. Connected through Bluetooth to the KFORCE app, DELTAS help Strength & Conditioning Coachs & Rehabilitation Professionals to manage an athlete’s return to play.
Thanks to their design, load capacity and high sampling frequency, DELTAS measure Physical Performance in a completely versatile and fast manner compared to any other system in the market.
- Force / velocity analytics
- Jump suite & functional assessment
- Versatile performance analysis
- Team statistics
Jump Analysis
Counter Movement Jump and Squat Jump protocols (CMJ & SJ): assess jump height and get indicators during the impulse phase on thrust, power, explosive force, RFD (Rate of Force Development) and Left / right distribution.
Drop Jump protocol (DJ): get jump height following a landing, force development during ground contact and the RSI (Reactive Strength Index).
Turnkey Protocols
Force / Velocity Spectrum Profile : measure optimal load for Maximal Power, a cutting edge test in biomechanics strength & conditioning. Guide your training towards one of these two antagonist components.
Dynamic Strength Index (DSI): get the ratio between an athlete’s ballistic peak force and their isometric peak force. This protocol includes isometric mid-thigh pull peak force (IMTP) and ballistic peak force during Counter Movement Jump (CMJ).
Unipodal CMJ / SJ: highlight Left/Right differences in Thrust, Force, Power, RDF, Jump Height.

Professional kits
A range of professional kits are available including all software and hardware in a comprehensive bundle.
Ultimate Rehab Pack
The KFORCE Rehab Pack comprising the 6 KFORCE Sensors: Muscle Controller, Plates, Grip, Bubble, Sens and Link. Includes the accessories: Twin handle and a bag.
Also, 1 year subscription to KForce App Pro+ worth $1,500
Ultimate Physio Pack
The KFORCE Physio Sports Pack includes the 7 KFORCE Sensors: 2 x Muscle Controller, Plates, Grip, Bubble, Sens and Link. Includes 5 accessories: Twin handle, 2 x Nordic accessory, Jump frame, Bag.
Also, 1 year subscription to KForce App Pro+ worth $1,500
K-invent accessories

Twin handle for muscle controller
The Twin Handle is an accessory that makes the KFORCE Muscle Controller easier to handle. The classic plug is removable, so you can switch it according to the needs of your evaluation. It is suitable for measures that require a stable and controlled two-handed grip. The use of a hand-held dynamometer has never been so comfortable.

Nordic test clamp for muscle controller
The Nordic Accessory is an accessory for the KFORCE Muscle Controller, it replaces the classic grip and allows the dynamometer to be fixed to a barbell for support on a stable plane. It fits very well for the Nordic Hamstrings Test as well as other evaluations or exercises requiring a dependent non-operator measurement.

Jump frame for plates
The Jump Frame is an accessory for the KFORCE Plates, it allows to stabilize the platforms and to obtain a larger surface at equal height to perform jumps in complete safety. It also allows you to adjust the distance between the plates to easily adapt it to the patient’s comfort. In addition, it ensures reproducibility of measurements under similar conditions. The Jump Frame is made of rigid foam. Lightweight and transportable, it will ensure the safety of your patients.