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Effects of 8 weeks of bed rest with or without resistance exercise intervention on the volume of the muscle tissue and the adipose tissues of the thigh

Ogawa, M, Belavy, D, Yoshiko, A, Armbrecht, G, Miokovic, T, Felsenberg, D and Akima, H 2020, Effects of 8 weeks of bed rest with or without resistance exercise intervention on the volume of the muscle tissue and the adipose tissues of the thigh, Physiological Reports, vol. 8, no. 18, pp. 1-12, doi: 10.14814/phy2.14560.

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Title Effects of 8 weeks of bed rest with or without resistance exercise intervention on the volume of the muscle tissue and the adipose tissues of the thigh
Author(s) Ogawa, M
Belavy, DORCID iD for Belavy, D orcid.org/0000-0002-9307-832X
Yoshiko, A
Armbrecht, G
Miokovic, T
Felsenberg, D
Akima, H
Journal name Physiological Reports
Volume number 8
Issue number 18
Article ID e14560
Start page 1
End page 12
Total pages 12
Publisher Wiley
Place of publication Hoboken, NJ
Publication date 2020-09
ISSN 2051-817X
2051-817X
Keyword(s) disuse
intermuscular adipose tissue
intramuscular fat
muscle atrophy
resistance training
unloading model
Summary The present study aims to investigate the effects of 8 weeks of bed rest, with or without resistance exercise intervention, on the volumes of muscle tissue and the intramuscular, intermuscular, and subcutaneous adipose tissues of the thigh. Twenty men were included, who were randomly assigned in three groups: resistance exercises group (RE group), resistance exercises with whole‐body vibration group (VRE group), and nonexercise control group (CTR group). The RE and VRE groups performed resistance exercises during 8 weeks of bed rest (3 days per week). Additionally, consecutive axial magnetic resonance images were obtained before and after the bed rest. Using these images, the volumes of the muscle tissue and the intramuscular adipose tissue, intermuscular adipose tissue, and subcutaneous adipose tissue of the thigh were evaluated. No significant time‐by‐group interaction was observed the volumes of the muscle tissue and the intramuscular adipose tissue, intermuscular adipose tissue, and subcutaneous adipose tissue between the RE and VRE groups. Furthermore, the RE and VRE groups were pooled as the resistance exercise intervention group (TR group), wherein their thigh muscle tissue volume was observed to be maintained after the bed rest. However, that of the CTR group significantly decreased. Regarding the thigh intramuscular adipose tissue and intermuscular adipose tissue volumes, no significant difference was observed among the CTR and TR groups. Although subcutaneous adipose tissue volume in the CTR group significantly increased after the bed rest, no changes were observed in that of the TR group. Therefore, the results of the present study suggested that within the 8 weeks of bed rest, adipose tissue adaptation differs depending on the location.
Language eng
DOI 10.14814/phy2.14560
Indigenous content off
Field of Research 0606 Physiology
1103 Clinical Sciences
1116 Medical Physiology
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2020, The Authors
Free to Read? Yes
Use Rights Creative Commons Attribution licence
Persistent URL http://hdl.handle.net/10536/DRO/DU:30144077

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Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.