Related Experiment Videos
Changes in elastic characteristics of human muscle induced by eccentric exercise
M Pousson1, J Van Hoecke, F Goubel
1Laboratoire de Biomécanique, INSEP, Paris, France.
Journal of Biomechanics
|January 1, 1990
Summary
Eccentric strength training reduced the series elastic component (SEC) compliance in human elbow flexor muscles. This finding suggests training alters muscle elasticity, impacting force transmission and potentially muscle function.
Area of Science:
- Biomechanics
- Human Physiology
- Exercise Science
Background:
- The series elastic component (SEC) is crucial for muscle force transmission and energy storage.
- Eccentric strength training is known to induce adaptations in muscle properties.
- Understanding SEC adaptations is vital for optimizing training programs and injury prevention.
Purpose of the Study:
- To investigate the effects of an eccentric strength training program on the muscular series elastic component (SEC) of human elbow flexors.
- To characterize the changes in SEC compliance and tension-extension relationships following training.
Main Methods:
- An in situ technique was employed to assess SEC characteristics in human elbow flexor muscles.
- Measurements focused on compliance-force and tension-extension relationships before and after a training intervention.
Main Results:
- Eccentric training led to a lower SEC compliance in trained muscles compared to untrained muscles at a given tension.
- A sharp increase in SEC compliance was observed as tension decreased.
- The study quantified the altered compliance-force and tension-extension dynamics post-training.
Conclusions:
- Eccentric strength training significantly modifies the series elastic component (SEC) of human elbow flexor muscles.
- The observed decrease in SEC compliance suggests adaptations in both active and passive SEC elements.
- These findings have implications for understanding muscle mechanics and the effects of training on performance and injury risk.