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Hokkaido University Collection of Scholarly and Academic Papers >
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Torque-angle curve of the knee flexors in athletes with a prior history of hamstring strain
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| Title: | Torque-angle curve of the knee flexors in athletes with a prior history of hamstring strain |
| Authors: | Mikami, Kentaro Browse this author | | Samukawa, Mina Browse this author →KAKEN DB | | Oba, Kensuke Browse this author | | Nakamura, Kentaro Browse this author | | Suzumori, Yuki Browse this author | | Ishida, Yuko Browse this author | | Matsumoto, Hisashi Browse this author | | Aoki, Yoshimitsu Browse this author | | Ishida, Tomoya Browse this author | | Yamanaka, Masanori Browse this author →KAKEN DB | | Tohyama, Harukazu Browse this author →KAKEN DB |
| Keywords: | hamstring injury | | eccentric muscle action | | high angular velocity | | dynamometer |
| Issue Date: | Mar-2022 |
| Publisher: | Elsevier |
| Journal Title: | Physical Therapy in Sport |
| Volume: | 54 |
| Start Page: | 29 |
| End Page: | 35 |
| Publisher DOI: | 10.1016/j.ptsp.2021.11.008 |
| PMID: | 34929533 |
| Abstract: | Objectives: To investigate the knee flexor torque-angle curve after hamstring strain injury using different muscle action types and angular velocities. Design: Cross-sectional. Setting: Controlled laboratory. Participants: Thirteen collegiate athletes injured hamstring strain (21.0 +/- 0.8 years; 173.9 +/- 6.5 cm; 70.1 +/- 10.5 kg). Main outcome measures: Concentric and eccentric knee flexor torque was measured at 60 & 300 degrees/sec. Peak torque and average torque every 10 degrees were determined from torque-angle curve and injured side was compared with non-injured side. Results: No significant differences were found in the concentric muscle actions. However, the eccentric peak torque was significantly lower on the injured side at 60 degrees/sec (p = 0.048) and at 300 degrees/sec (p = 0.002). The average eccentric torque was significantly lower on the injured side at 60 degrees/sec from 10 degrees to 20 degrees of knee flexion (p = 0.012-0.018) and at 300 degrees/sec from 10 degrees to 60 degrees of knee flexion (p = 0.005-0.049). Conclusion: The knee flexor torque-angle curve changes with eccentric muscle action after hamstring injury. Eccentric torque declines were close to full knee extension at 60 degrees/sec and a wide range of knee flexion at 300 degrees/sec. The assessment and rehabilitation of eccentric hamstring strength may be important to consider the effect of the angular velocity after hamstring strain injury. (C) 2021 Elsevier Ltd. All rights reserved. |
| Rights: | © 2022. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/ | | https://creativecommons.org/licenses/by-nc-nd/4.0/ |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/88171 |
| Appears in Collections: | 保健科学院・保健科学研究院 (Graduate School of Health Sciences / Faculty of Health Sciences) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 寒川 美奈
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