Concentric exercise refers to a form of dynamic muscle loading where tension in a muscle develops and physical shortening of the muscle occurs as an external force (resistance) is overcome, as when lifting a weight.
A Note on Concentric and Eccentric Exercise
A combination of concentric and eccentric muscle action is evident in countless tasks of daily life such as walking and down inclines, ascending and descending stairs, rising from a chair and sitting back down. A maximum concentric contraction produces less force than a maximum eccentric contraction under the same conditions.
Source: Therapeutic Exercise Foundations and Techniques, 5th Edition by Carolyn Kisner (PT, MS) and Lynn Allen Colby (PT, MS)
Purpose and Function
Muscles worked: Quadriceps/Hamstrings
Stronger Quads and Hams make it easier to sit/stand and squat/bend, Also, stability, balance, and speed is increased.
How to Run the Program
- Press “Concentric” button
- Place ankle between rollers, other foot planted on the stool.
- Press start, the green triangle
- Pull back/down against the back roller, moving the arm to 60 degrees or as far as able.
- Once at 60 degrees, push out/up against the front roller, moving the arm to 30 degrees, if able. Repeat in each direction for 3 minutes.
- Record quadriceps and hamstring strength displayed at the end of the set.
Program Settings
This is where range of motion and exercise thresholds can be changed as directed by your coach.
Other Tutorial Videos for X10 Patients
Click on the picture below to visit the appropriate tutorial page.
