Muscle-Tendon Behavior and Kinetics in Gastrocnemius Medialis During Forefoot and Rearfoot Strike Running
| Autor: | Toshio Yanagiya, Tomonari Takeshita, Tetsuo Fukunaga, Hiroaki Noro, Taira Yoshida, Keiichiro Hata |
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| Rok vydání: | 2020 |
| Předmět: |
Male
Biophysics Achilles Tendon Running 03 medical and health sciences 0302 clinical medicine medicine Humans Orthopedics and Sports Medicine Force platform Treadmill Muscle Skeletal Gait 030304 developmental biology Mathematics 0303 health sciences Forefoot Rehabilitation Work (physics) 030229 sport sciences Fascicle Tendon Biomechanical Phenomena Kinetics medicine.anatomical_structure Fascicle length Gastrocnemius medialis Biomedical engineering |
| Zdroj: | Journal of applied biomechanics. 37(3) |
| ISSN: | 1543-2688 |
| Popis: | The present study aimed to clarify the effect of the foot strike pattern on muscle–tendon behavior and kinetics of the gastrocnemius medialis during treadmill running. Seven male participants ran with 2 different foot strike patterns (forefoot strike [FFS] and rearfoot strike [RFS]), with a step frequency of 2.50 Hz and at a speed of 2.38 m/s for 45 seconds on a treadmill with an instrumented force platform. The fascicle behavior of gastrocnemius medialis was captured using a B-mode ultrasound system with a sampling rate of 75 Hz, and the mechanical work done and power exerted by the fascicle and tendon were calculated. At the initial contact, the fascicle length was significantly shorter in the FFS than in the RFS (P = .001). However, the fascicular velocity did not differ between strike patterns. Higher tendon stretch and recoil were observed in the FFS (P P = .017, respectively) compared with the RFS. The fascicle in the positive phase performed the same mechanical work in both the FFS and RFS; however, the fascicle in the negative phase performed significantly greater work in the FFS than in the RFS (P = .001). RFS may be advantageous for requiring less muscular work and elastic energy in the series elastic element compared with the FFS. |
| Databáze: | OpenAIRE |
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