Hamstring muscles’ function deficit during overground sprinting in track and field athletes with a history of strain injury期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

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Hamstring muscles’ function deficit during overground sprinting in track and field athletes with a history of strain injury

Authors:	Ayako Higashihara Takashi Ono Gaku Tokutake Rieko Kuramochi Yasuhiro Kunita Yasuharu Nagano

Institution:	1. Faculty of Sport Sciences, Waseda University, Saitama, Japanhigashihara@keio.jphttps://orcid.org/0000-0002-8634-0959;3. Kitasato University College of Liberal Arts and Sciences, Center for Human and Social Sciences, Kanagawa, Japan;4. School of Health and Sport Sciences, Chukyo University, Aichi, Japanhttps://orcid.org/0000-0002-5026-5619;5. School of Health and Sport Sciences, Chukyo University, Aichi, Japan;6. Department of Rehabilitation, Nippon Koukan Hospital, Kanagawa, Japan;7. Department of Sports Wellness Sciences, Japan Women’s College of Physical Education, Tokyo, Japanhttps://orcid.org/0000-0001-6964-2245

Abstract:	ABSTRACT In this study, we aimed to clarify the characteristics of neuromuscular function, kinetics, and kinematics of the lower extremity during sprinting in track and field athletes with a history of strain injury. Ten male college sprinters with a history of unilateral hamstring injury performed maximum effort sprint on an athletic track. The electromyographic (EMG) activity of the long head of the biceps femoris (BFlh) and gluteus maximus (Gmax) muscles and three-dimensional kinematic data were recorded. Bilateral comparisons were performed for the EMG activities, pelvic anterior tilt angle, hip and knee joint angles and torques, and the musculotendon length of BFlh. The activity of BFlh in the previously injured limb was significantly lower than that in the uninjured limb during the late-swing phase of sprinting (p < 0.05). However, the EMG activity of Gmax was not significantly different between the previously injured and uninjured limbs. Furthermore, during the late-swing phase, a significantly more flexed knee angle (p < 0.05) and a decrease in BFlh muscle length (p < 0.05) were noted in the injured limb. It was concluded that previously injured hamstring muscles demonstrate functional deficits during the late swing phase of sprinting in comparison with the uninjured contralateral muscles.

Keywords:	Hamstrings sprint inhibition inter-limb musculoskeletal model

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