Muscle fatigue in the gluteus maximus changes muscle synergies during single-leg landing |
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| Institution: | 1. General Education Core Curriculum Division, Seigakuin University, 1-1, Tosaki, Ageo, Saitama, Japan;2. Waseda Institute for Sport Sciences, Waseda University, 2-579-15, Mikajima, Tokorozawa, Saitama, Japan;3. Faculty of Health and Medical Care, Saitama Medical University, 981, Kawakado, Moroyama, Saitama, Japan;1. Laboratório de Pesquisa do Exercício/ Universidade Federal do Rio Grande do Sul(UFRGS), Porto Alegre, RS, Brazil;1. Rehabilitation Sciences Post-Graduation Program, Augusto Motta University Centre (UNISUAM), Rio de Janeiro, Brazil;2. Department of Medical Imaging, Allergology and Physiotherapy, Faculty of Dental Medicine, Medical University of Plovdiv, Bulgaria;3. Department of Kinesiotherapy, Faculty of Public Health, Medical University of Sofia, Bulgaria;4. Department of Physical Therapy, School of Medicine, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil;5. Postgraduate Program in Medical Sciences, School of Medical Sciences, State University of Rio de Janeiro (UERJ), Rio de Janeiro, Brazil;1. Institut de recherche Robert-Sauvé en santé et en sécurité du travail (IRSST), 505 Boulevard De Maisonneuve Ouest, Montréal, Québec, H3A 3C2, Canada;2. School of Rehabilitation, Faculty of Medicine, Université de Montréal, 7077 Avenue du Parc, Montreal, Montreal, Quebec, H3T 1J4, Canada;3. School of Physical & Occupational Therapy, McGill University, 845 Rue Sherbrooke Ouest, Montréal, Québec, H3G 1Y5, Canada;4. Center for Interdisciplinary Research in Rehabilitation of Greater Montreal (CRIR), Institut universitaire sur la réadaptation en déficience physique de Montréal (IURDPM), Centre intégré universitaire de santé et de services sociaux du Centre-Sud-de-l’Ile-de-Montréal (CCSMTL), 6300 Avenue de Darlington, Montréal, Québec, H3S 2J4, Canada;1. Student at the Post-Graduate Program in Physiotherapy UFTM/ UFU, Federal University of Uberlândia, Minas Gerais, Brazil;2. Professor at the Physiotherapy Course - UFU, Federal University of Uberlândia, Minas Gerais, Brazil;3. Professor at the Post-Graduate Program in Physiotherapy UFTM/ UFU, Federal University of Uberlândia, Minas Gerais, Brazil;1. Federal University of Triângulo Mineiro, Uberaba, Minas Gerais, Brazil;2. Botucatu Medical School (UNESP), Botucatu, São Paulo, Brazil |
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| Abstract: | IntroductionHamstring strain often occurs at the end of a match or during practice in sports activities. The gluteus maximus muscle is an important muscle for hip extension along with the hamstring. Gluteus maximus muscle dysfunction may be involved in the occurrence of hamstring strain. Therefore, we focused on gluteus maximus muscle fatigue and investigated gluteus maximus and hamstring coordination.MethodsHe activities of the right side of the erector spinae, internal oblique, upper, and lower gluteus maximus fibers, gluteus medius, rectus femoris, semitendinosus, and medial head of the gastrocnemius muscle were measured in 21 young healthy men during single-leg landing before and after fatigue intervention. Fatigue intervention of the gluteus maximus muscle was performed using electrical muscle stimulation. Electromyography data were analyzed using non-negative matrix factorization. Additionally, to evaluate gluteus maximus fatigue, an isometric hip extension strength test and frequency analysis were performed before and after the intervention.ResultsThe isometric strength power and median frequency significantly decreased after intervention. Two muscle synergies were extracted and the contribution of semitendinosus of a synergy that was activated just before landing, significantly increased due to the intervention.DiscussionThe results of the isometric hip strength test and frequency analysis, the gluteus maximus fatigued by the intervention. The hip extensor muscles eccentrically contract to absorb the ground reaction force during landing. Therefore, our results may suggest that the eccentric load increases for the hamstring due to gluteus maximus muscle fatigue and may be a risk factor for hamstring strain. |
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