Effect of unloading on muscle volume with and without resistance training

Hiroshi Akima, Jun ichi Ushiyama, Junjiro Kubo, Hideoki Fukuoka, Hiroaki Kanehisa, Tetsuo Fukunaga

Research output: Contribution to journalArticle

31 Citations (Scopus)

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 6{ring operator} head-down tilt bed rest. Twelve healthy men were divided into two groups: the resistance training group: BR-Tr (n = 6) and the control group: BR-Cont (n = 6). 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 (- 12% to - 8%). These results suggest that resistance training during bed rest can prevent the deteriorating of thigh muscles and calf muscles.

Original languageEnglish
Pages (from-to)728-736
Number of pages9
JournalActa Astronautica
Volume60
Issue number8-9
DOIs
Publication statusPublished - 2007 Apr
Externally publishedYes

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Unloading
Muscle

Keywords

  • Human
  • Microgravity
  • Muscle volume
  • Unloading

ASJC Scopus subject areas

  • Aerospace Engineering

Cite this

Akima, H., Ushiyama, J. I., Kubo, J., Fukuoka, H., Kanehisa, H., & Fukunaga, T. (2007). Effect of unloading on muscle volume with and without resistance training. Acta Astronautica, 60(8-9), 728-736. https://doi.org/10.1016/j.actaastro.2006.10.006

Effect of unloading on muscle volume with and without resistance training. / Akima, Hiroshi; Ushiyama, Jun ichi; Kubo, Junjiro; Fukuoka, Hideoki; Kanehisa, Hiroaki; Fukunaga, Tetsuo.

In: Acta Astronautica, Vol. 60, No. 8-9, 04.2007, p. 728-736.

Research output: Contribution to journalArticle

Akima, H, Ushiyama, JI, Kubo, J, Fukuoka, H, Kanehisa, H & Fukunaga, T 2007, 'Effect of unloading on muscle volume with and without resistance training', Acta Astronautica, vol. 60, no. 8-9, pp. 728-736. https://doi.org/10.1016/j.actaastro.2006.10.006
Akima H, Ushiyama JI, Kubo J, Fukuoka H, Kanehisa H, Fukunaga T. Effect of unloading on muscle volume with and without resistance training. Acta Astronautica. 2007 Apr;60(8-9):728-736. https://doi.org/10.1016/j.actaastro.2006.10.006
Akima, Hiroshi ; Ushiyama, Jun ichi ; Kubo, Junjiro ; Fukuoka, Hideoki ; Kanehisa, Hiroaki ; Fukunaga, Tetsuo. / Effect of unloading on muscle volume with and without resistance training. In: Acta Astronautica. 2007 ; Vol. 60, No. 8-9. pp. 728-736.
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