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Passive stiffness of the Achilles tendon in runners with different levels of performance-2nd part

Belaoued, Rayan
(2023)

Files

Belaoued_Ryan_46211600_2022-2023.pdf
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Details

Supervisors
Nguyen, Anh Phong
Faculty
Faculté des sciences de la motricité
Degree label
Master [120] en sciences de la motricité, orientation générale, à finalité spécialisée: kinésithérapie musculo-squelettique
Abstract
Background: Few studies have addressed the impact of passive stiffness on runners performances. In this study, we wanted to find out: 1) the correlation between running performance and passive stiffness, 2) the influence of biomechanical parameters on passive stiffness. Methods: 22 males recreational runners undergo a two-phase experiment. First a VAMEVAL test was performed to get the MAS. Then subjects ran 5 minutes at 50% of the MAS as a warm-up on an instrumented treadmill, followed by 6 minutes at 65%. Before and after the run, the passive stiffness was measured by a MyotonPro. The energy cost was determined by an ergo spirometer. Results: Only point AT has meaningful results. There is a negative linear relationship between RE and pre-run stiffness. RE reported a significant negative correlation with some biomechanical running parameters such as leg stiffness and a significant positive correlation with breaking peak force and step length. Similarly, pre-run AT stiffness at rest demonstrated significant positive correlation with leg stiffness and a negative correlation with step length. And a positive correlation with braking peak force. Conclusion: A greater stiffness at rest is correlated with better RE. Biomechanical parameters is correlate to RE as well as stiffness at rest and on the difference of stiffness pre- and post-run.