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Low-volume muscle endurance training prevents decrease in muscle oxidative and endurance function during 21-day forearm immobilization.

Publication ,  Journal Article
Homma, T; Hamaoka, T; Murase, N; Osada, T; Murakami, M; Kurosawa, Y; Kitahara, A; Ichimura, S; Yashiro, K; Katsumura, T
Published in: Acta Physiol (Oxf)
December 2009

AIM: To examine the effects of low-volume muscle endurance training on muscle oxidative capacity, endurance and strength of the forearm muscle during 21-day forearm immobilization (IMM-21d). METHODS: The non-dominant arm (n = 15) was immobilized for 21 days with a cast and assigned to an immobilization-only group (Imm-group; n = 7) or an immobilization with training group (Imm+Tr-group; n = 8). Training comprised dynamic handgrip exercise at 30% of pre-intervention maximal voluntary contraction (MVC) at 1 Hz until exhaustion, twice a week during the immobilization period. The duration of each exercise session was 51.7 +/- 3.4 s (mean +/- SE). Muscle oxidative capacity was evaluated by the time constant for phosphocreatine recovery (tau(off)PCr) after a submaximal handgrip exercise using (31)phosphorus-magnetic resonance spectroscopy. An endurance test was performed at 30% of pre-intervention MVC, at 1 Hz, until exhaustion. RESULTS: tau(off)PCr was significantly prolonged in the Imm-group after 21 days (42.0 +/- 2.8 and 64.2 +/- 5.1 s, pre- and post-intervention respectively; P < 0.01) but did not change for the Imm+Tr-group (50.3 +/- 3.0 and 48.8 +/- 5.0 s, ns). Endurance decreased significantly for the Imm-group (55.1 +/- 5.1 and 44.7 +/- 4.6 s, P < 0.05) but did not change for the Imm+Tr-group (47.9 +/- 3.0 and 51.7 +/- 4.0 s, ns). MVC decreased similarly in both groups (P < 0.01). CONCLUSIONS: Twice-weekly muscle endurance training sessions, each lasting approx. 50 s, effectively prevented a decrease in muscle oxidative capacity and endurance; however, there was no effect on MVC decline with IMM-21d.

Duke Scholars

Published In

Acta Physiol (Oxf)

DOI

EISSN

1748-1716

Publication Date

December 2009

Volume

197

Issue

4

Start / End Page

313 / 320

Location

England

Related Subject Headings

  • Young Adult
  • Time Factors
  • Physiology
  • Physical Endurance
  • Oxygen Consumption
  • Muscle, Skeletal
  • Muscle Strength
  • Muscle Contraction
  • Male
  • Magnetic Resonance Imaging
 

Citation

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Chicago
ICMJE
MLA
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Homma, T., Hamaoka, T., Murase, N., Osada, T., Murakami, M., Kurosawa, Y., … Katsumura, T. (2009). Low-volume muscle endurance training prevents decrease in muscle oxidative and endurance function during 21-day forearm immobilization. Acta Physiol (Oxf), 197(4), 313–320. https://doi.org/10.1111/j.1748-1716.2009.02003.x
Homma, T., T. Hamaoka, N. Murase, T. Osada, M. Murakami, Y. Kurosawa, A. Kitahara, S. Ichimura, K. Yashiro, and T. Katsumura. “Low-volume muscle endurance training prevents decrease in muscle oxidative and endurance function during 21-day forearm immobilization.Acta Physiol (Oxf) 197, no. 4 (December 2009): 313–20. https://doi.org/10.1111/j.1748-1716.2009.02003.x.
Homma T, Hamaoka T, Murase N, Osada T, Murakami M, Kurosawa Y, et al. Low-volume muscle endurance training prevents decrease in muscle oxidative and endurance function during 21-day forearm immobilization. Acta Physiol (Oxf). 2009 Dec;197(4):313–20.
Homma, T., et al. “Low-volume muscle endurance training prevents decrease in muscle oxidative and endurance function during 21-day forearm immobilization.Acta Physiol (Oxf), vol. 197, no. 4, Dec. 2009, pp. 313–20. Pubmed, doi:10.1111/j.1748-1716.2009.02003.x.
Homma T, Hamaoka T, Murase N, Osada T, Murakami M, Kurosawa Y, Kitahara A, Ichimura S, Yashiro K, Katsumura T. Low-volume muscle endurance training prevents decrease in muscle oxidative and endurance function during 21-day forearm immobilization. Acta Physiol (Oxf). 2009 Dec;197(4):313–320.
Journal cover image

Published In

Acta Physiol (Oxf)

DOI

EISSN

1748-1716

Publication Date

December 2009

Volume

197

Issue

4

Start / End Page

313 / 320

Location

England

Related Subject Headings

  • Young Adult
  • Time Factors
  • Physiology
  • Physical Endurance
  • Oxygen Consumption
  • Muscle, Skeletal
  • Muscle Strength
  • Muscle Contraction
  • Male
  • Magnetic Resonance Imaging