Hand-held dynamometer

The K-Push 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 K-Push 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.

Key features

  • Fast assessment
  • User friendly
  • Versatile


Max strength evaluation

This assessment tests the maximal capacity of a muscle group in a specific situation. The max corresponds to 100% of the strength abilities. It is related to a short and strong physical effort and it is very helpful as a work reference. The most relevant measured parameter is the Force Peak.

Strength endurance evaluation

This assessment allows to measure the ability to keep a physical effort over time. It is related to a long and sustained effort. The most relevant measurement indicator to describe the stamina is the average of the strength kept on a long given time. This evaluation highlights the fatigue rate of force as well.



Configuration screen

Exercises are customizable in order to train the patient or athlete on a targeted zone and optimize the work. Following the assessment results, the target zone is adjustable to a percentage of the max evaluation.

Repetition counts

Based on the assessment reference, you will train your patients on a specific number of repetitions to reach a specific target (% of the max). With the Reps Counts, you will control in real-time the achievement as well as the pace of the repetitions. A repetition is counted when there is a muscles contraction & release cycle.

Isometric exercise

On the opposite of the Reps count, this exercise requires a sustained and static movement instead of squeeze & release contraction cycles. It implies to keep the muscle contraction while keeping a steady position, and it requires control and accuracy of the level of strength. You can set a target for your patients.



On more challenging

Meet Karl, the KINVENT’s kangaroo who moves in different playful setups. The games are customizable in order to train the patient or athlete with fun and towards a target, which can be adjusted in terms of percentage of the Max Evaluation, depending on the assessment results. Moreover, there are 10 levels of difficulty for each game, proposing an extra challenge to the patient/athlete.


Karl is a Scuba Diver! Your patient will have fun controlling motion and strength in order to avoid the mean fishes while collecting a fortune of pearls and diamonds.


This rehab-game makes Karl evolve with his hang-gliding in the desert. Controlling their strength and motion in order to make Karl avoid the cactus while collecting as much as possible of tree-leaf and butterflies, your patient will be happy to play.



Results details

Results details of a max assessment isometric strength for a horizontal shoulder abduction. The results allow to highlight the percentage of deficit or imbalance of the injured shoulder compared to the healthy one on this specific movement. Each KFORCE report can be exported in a PDF format.

Results over time

The key to progress for the functional rehabilitation is the motivation. This motivation can be powered by the measurement and the ability to compare the starting point regarding the current state as well as how much effort is remaining before the recovery or the return to sport. Each KFORCE report can be exported in a PDF format.

Use cases

Upper Limbs


Internal rotator cuff

Evaluation of the Isometric Strength of the internal rotator cuff. The Muscle Controller will give you reports of the strength imbalances in a very efficient way.


Autonomous exercising

Isometric muscle strengthens in autonomy thanks to a versatile design both adjustable for the physiotherapist and the patient.

NEWk_invent22867-117 (1)


Evaluation of the isometric strength of the biceps on an elbow flexion at 90°.

Lower Limbs



Evaluation of the isometric strength of the hamstrings at a specific range of motion. Muscle Controller is the ideal connected sensor to quantify the imbalance regarding to the side (left/right) and to the antagonist muscle groups.



Evaluation of the isometric strength of the adductors. Muscle Controller is the ideal connected sensor to quantify the strength and to quickly compare to the antagonist muscle groups.


Nordic hamstrings test

Evaluation of the eccentric strength of the hamstrings in bilateral performing a nordic hamstring test by the way of two Muscle Controllers and two nordic accessories attached on a barbell.

And a lot more possibilities