Muscle activation of plantar flexors in response to different strike patterns during barefoot and shod running in medial tibial stress syndrome

Autor: Byungjoo Noh, Takeo Ishii, Akihiko Masunari, Yuhei Harada, Shumpei Miyakawa
Jazyk: angličtina
Rok vydání: 2015
Předmět:
Zdroj: Journal of Physical Fitness and Sports Medicine, Vol 4, Iss 1, Pp 133-141 (2015)
Druh dokumentu: article
ISSN: 2186-8131
2186-8123
DOI: 10.7600/jpfsm.4.133
Popis: Medial tibial stress syndrome (MTSS) is one of the most common causes of exercise-induced lower leg pain in running athletes. The purpose of this study was to compare plantar flexor activation changes in response to different strike patterns during barefoot and shod running in subjects with and without MTSS. The changes were assessed by observing motion characteristics derived from mechanical factors. The 15 collegiate soccer players who volunteered to participate were divided into two groups (7 MTSS, 8 non-MTSS). Three-dimensional marker positions were recorded with a 12-camera motion capture system (Vicon) operating at 250 Hz while the subjects ran along a runway at 3.3 m/s. Each subject completed the running with and without shoes, and different strike patterns as the forefoot strike pattern (FFS) and rearfoot strike pattern (RFS) were collected. Plantar flexor activation was investigated by software for interactive musculoskeletal modeling (SIMM) based on how the activation ratio changed from 0 to 1 at landing. Compared to controls, the MTSS group had higher tendency muscle activity of the plantar flexors that involved the peroneal muscle during first half of stance (p
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