Legfizz; biofeedback-based isokinetic exercise device is a mobile device that can be easily used for ankle strengthening, hip and knee strengthening.

Distinctive and advantageous features of the product

  1. It is easily connected with the hip apparatus, ankle apparatus and knee apparatus.
  2. The exercise is started with an easy interface.
  3. Comfortable working is possible thanks to the apparatus designed for hips, feet and knees.
  4. Work can be done even in people with very severe spasticity. First, it is set up at a narrow angle, and as the spasticity decreases, the angle is widened.


Legfizz’ Price

It is offered for sale at a more affordable price range compared to other related robotic devices.

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How to use the device?

  1. For whichever hip, ankle or knee position the exercise will be performed, the relevant apparatus is placed and connected appropriately.
  2. The necessary parameters are entered on the touch screen of the device. (Speed, duration, position setting). Once all parameters are set, the exercise is started.

Who is the device for? (Usage areas)

The device is for individuals who have loss of movement due to neurological and orthopedic problems to exercise easily and painlessly:

In the neurological field

  1. Cerebral palsy
  2. Stroke
  3. Spİna bifıda
  4. Brachial plexus
  5. head injuries
  6. spinal cord injuries
  7. Multiple sclerosis (MS)
  8. Down Sendrom

In the orthopedic field

  1. Post-fracture exercises (limited movement after ankle fracture)
  2. Tendon injuries
  3. Soft tissue injuries
  4. Muscle and connective tissue injuries

The device can be used for children and adults, men and women.

The Device’s Mechanism of Action and Our Goal

Three movements are performed in the robotic leg device.

These ;

  1. Hip flexion-extension (hip pull-push)
  2. Ankle dorsiflexion-planter flexion (pulling-pushing the ankle)
  3. Knee flexion-extension (knee bending and pushing)


There are 3 types of exercises in 3 movements studied in the robotic leg device.

  1. Passive Exercise
  2. Active assisted exercise
  3. Taking advantage of the biofeedback feature, you can perform exercises that will increase the control of the hip, knee and ankle by the brain and strengthen the leg muscles.

The Purpose of Working with Robotic Leg Device;

In individuals with loss of movement and contraction in the hip, knee and ankle, exercising with the device reduces the contraction, restores movement and strengthens these muscles by increasing the control of the muscles around the leg by the brain.

1-PASSIVE EXERCISE with robotic exercise device

  • Thanks to sensory sensors that transmit position information in the joints and muscles, the brain receives and processes the body’s position information and orders active movement in this direction.
  • Especially if damage occurs in the part of the brain that detects the sense of position, the brain orders contraction for protection because it cannot perceive the position of the body.
  • If some of the remaining parts of the brain take over the task of the damaged parts, the contraction is resolved.
  • When a lot of position data is sent from the body to the brain, the remaining intact areas will undertake this task more easily.


On robotic exercise device

Passive exercises are performed for the desired duration and at the desired speed. In this way, after exercise, much more position data is sent to the brain compared to manual exercises, and healthy parts of the brain can take over the task of damaged areas.


2- BIOFEEDBACK SUPPORTED EXERCISE with robotic exercise device

In cases with tone problems (spasticity, dystonia, etc.), the brain often does not know in which direction it gives the command. For example, while trying to command the ankle to dorsiflexe (raise the ankle up), it may command planterflexion (bring the ankle down).


In the biofeedback system, the individual can easily see in which direction he is moving, and since he sees which movement he is making, it becomes easier for his brain to give orders in the correct direction of movement.
While working with this device, the individual who cannot give a movement command enough to create movement within his own movement range sees the force he applies on the screen even when he applies a force that is not enough to create movement, and has the opportunity to participate in the movement in every movement range. In this way, the brain’s capacity to give orders to the leg muscles increases.

By taking advantage of the biofeedback feature, doing exercises that will increase the control of the leg muscles by the brain and strengthen the muscles around the legs.

Providing isokinetic exercise with biofeedback support is one of the most important features of this device.

Biofeedback is the process of converting an action occurring in the body into sound or image that can be perceived by the person.

Isokinetic exercise is defined as the person working with resistance in the direction of movement or vice versa while making the movement passive with any device.

The individual is connected to the device. The range of motion to be exercised is determined. The force range we want the individual to apply is entered in grams on the screen interface and the exercise is started. When the individual applies more or less force than the range we set, the system gives an audible and visual warning.


For example; Values ​​between 500 grams and 1100 grams are entered into the interface on the screen. While the device is moving, the individual is asked to apply force within this force range. When the individual applies more than 1100 grams of force, the light on the right side of the screen turns on and an audible warning sounds. When the individual applies less than 500 grams of force, the light on the left side of the screen turns on and an audible warning sounds. The individual will have to constantly give commands to the pushing muscle to apply force in this power range.

In this way, the brain’s ability to control the pushing muscle will increase. The same process is applied to the leg pulling muscle. In order to increase the strength in the pushing muscle or pulling muscle, the amount of force we ask the person to apply is increased. While the brain’s ability to give orders increases, the muscles around the legs are also strengthened.

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