Title

Adiposity Attenuates Muscle Quality And The Adaptive Response To Resistance Exercise In Non-Obese, Healthy Adults

Keywords

adiposity; FAMuSS; muscle quality; resistance exercise; strength

Abstract

Background:Emerging data have revealed a negative association between adiposity and muscle quality (MQ). There is a lack of research to examine this interaction among young, healthy individuals, and to evaluate the contribution of adiposity to adaptation after resistance exercise (RE).Objective:The purpose of this investigation was to examine the influence of subcutaneous adipose tissue (SAT) on muscle function among non-obese individuals before and after RE.Design:Analyses included 634 non-obese (body mass index 30 kg m 2) subjects (253 males, 381 females; age23.35.2 years). SAT and muscle mass (magnetic resonance imaging-derived SAT and biceps muscle volume), isometric and dynamic biceps strength, and MQ (strength/muscle volume), were analyzed at baseline and after 12 weeks of unilateral RE.Results:At baseline, SAT was independently associated with lower MQ for males (Β0.55; P0.01) and females (Β0.45; P0.01), controlling for body mass and age. Adaptation to RE revealed a significant negative association between SAT and changes for strength capacity (Β0.13; p0.03) and MQ (Β0.14; P0.01) among males. No attenuation was identified among females. Post-intervention SAT remained a negative predictor of MQ for males and females (Β0.47; P0.01).Conclusions:The findings reveal that SAT is a negative predictor of MQ among non-obese, healthy adults, and that after 12 weeks of progressive RE this association was not ameliorated. Data suggest that SAT exerts a weak, negative influence on the adaptive response to strength and MQ among males. © 2011 Macmillan Publishers Limited All rights reserved.

Publication Date

8-1-2011

Publication Title

International Journal of Obesity

Volume

35

Issue

8

Number of Pages

1095-1103

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1038/ijo.2010.257

Socpus ID

80051586848 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/80051586848

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