Effect of unloading on muscle volume with and without resistance training |
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| Institution: | 2. Department of Physical Therapy, Faculty of Health, Medical care, and Welfare, Kibi International University, Takahashi, Okayama, Japan;3. Department of Rehabilitation, Yoshinogawa Hospital, Itano, Tokushima, Japan;4. Department of Rehabilitation, Kasei Tamura Hospital, Wakayama, Japan;5. Life and Medical Sciences Area, Health Sciences Discipline, Kobe University, Kobe, Hyogo, Japan;1. Centre de recherche de l''Institut universitaire de cardiologie et de pneumologie de Québec – Université Laval, Québec, QC, Canada;2. Department of Kinesiology, Faculty of Medicine, Université Laval, Québec, QC, Canada;3. Endocrinology and Nephrology Unit, CHU de Québec – Université Laval Research Center, Québec, QC, Canada;4. Faculty of Pharmacy, Université Laval, Québec, QC, Canada;2. Centre for Exercise and Sport Science Research (CESSR), School of Medical and Health Sciences, Edith Cowan University, Joondalup, Australia |
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| Abstract: | The present study aimed to investigate the effect of resistance training on the volume of four muscle groups and/or 17 individual muscles of the human lower limb during 20 days of head-down tilt bed rest. Twelve healthy men were divided into two groups: the resistance training group: BR-Tr and the control group: BR-Cont . The volumes of the knee extensor, knee flexor, adductor, plantar flexor, and dorsiflexor muscle groups and their individual muscles were calculated. After the bed rest, the BR-Tr subjects showed no significant change in the volume in almost all tested muscles; in contrast, the volumes of the four muscle groups significantly decreased in the BR-Cont group (% to %). These results suggest that resistance training during bed rest can prevent the deteriorating of thigh muscles and calf muscles. |
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