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- MUSCLE MASS GAIN AFTER RESISTANCE TRAINING IS INVERSELY CORRELATED WITH TRUNK ADIPOSITY GAIN IN POSTMENOPAUSAL WOMEN
- Universidade Federal do Triângulo Mineiro (UFTM)
- Universidade Estadual Paulista (UNESP)
- Fundação Lucentis de Apoio a Cultura, Ensino, Pesquisa e Extensao
- Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
- Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
- Orsatti, FL, Nahas, EAP, Orsatti, CL, de Oliveira, EP, Nahas-Neto, J, da Mota, GR, and Burini, RC. Muscle mass gain after resistance training is inversely correlated with trunk adiposity gain in postmenopausal women. J Strength Cond Res 26(8): 2130-2139, 2012-The aim of this study was to evaluate alterations in trunk adiposity (TA) over 9 months of resistance training (RT) and associate these changes with the hypertrophy of muscle mass (MM) in postmenopausal women (PW). The investigation used a sample that consisted of 22 PW (44-69 years old). The group was subjected to RT (60-80% of 1 repetition maximum) for the total body 3 d.wk(-1). Body composition (dual-energy x-ray absorptiometry) and plasma levels of insulin-like growth factor-1 (IGF-1), follicle-stimulating hormone, E-2 (Immulite system), and interleukin-6 (IL-6; enzyme-linked immunosorbent assay) were assessed at the beginning and end of the experiment. After RT, only women who acquired up to 5% TA gained MM, whereas women who acquired >5% TA exhibited increased IL-6 and no MM gain (p < 0.05). The Delta MM was negatively associated with time of menopause (r = -0.45, p < 0.05) and positively associated with baseline IGF-1 (r = 0.47, p < 0.05). Only Delta LE (leg extension) was negatively associated with baseline IL-6 (p < 0.05). Trunk adiposity growth (Delta TF, kilograms) was positively correlated with changes in IL-6 (r = 0.68, p < 0.05). The MM gain was negatively correlated with Delta TF (r = -0.63, p < 0.05) and changes in IL-6 (r = -0.73, p < 0.05). After adjusting all of the confounding variables, only baseline IGF-1 (positively) and changes in IL-6 (negatively) influenced MM, and only the increase in TA influenced IL-6. Our study suggests that increased levels of TA during RT increase IL-6 concentrations, which is a significant negative predictor of MM gain in PW.
- Journal of Strength and Conditioning Research. Philadelphia: Lippincott Williams & Wilkins, v. 26, n. 8, p. 2130-2139, 2012.
- Lippincott Williams & Wilkins
- strength exercise
- abdominal fat
- Acesso restrito
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