Muscular Strength Adaptations and Hormonal Responses After Two Different Multiple-Set Protocols of Resistance Training in Postmenopausal Women

ABSTRACTNunes, PRP, Barcelos, LC, Oliveira, AA, Furlanetto, R, Martins, FM, Resende, EAMR, and Orsatti, FL. Muscular strength adaptations and hormonal responses after two different multiple-set protocols of resistance training in postmenopausal women. J Strength Cond Res 33(5)1276–1285, 2019—We stud...

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Published in:	Journal of strength and conditioning research Vol. 33; no. 5; pp. 1276 - 1285
Main Authors:	Nunes, Paulo R.P, Barcelos, Larissa C, Oliveira, Anselmo A, Furlanetto, Roberto, Martins, Fernanda M, Resende, Elizabete A.M.R, Orsatti, Fábio L
Format:	Journal Article
Language:	English
Published:	United States Copyright by the National Strength & Conditioning Association 01-05-2019
Subjects:	Adaptation, Physiological - physiology Aged Female Humans Hydrocortisone - metabolism Middle Aged Muscle Strength - physiology Muscle, Skeletal - physiology Postmenopause - physiology Resistance Training - methods Somatomedins - metabolism Testosterone - metabolism
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Summary:	ABSTRACTNunes, PRP, Barcelos, LC, Oliveira, AA, Furlanetto, R, Martins, FM, Resende, EAMR, and Orsatti, FL. Muscular strength adaptations and hormonal responses after two different multiple-set protocols of resistance training in postmenopausal women. J Strength Cond Res 33(5)1276–1285, 2019—We studied the effects of 2 different resistance training (RT) multiple-set protocols (3 and 6 sets) on muscle strength and basal hormones concentrations in postmenopausal women (PW). Postmenopausal women were randomly allocated into 3 groupscontrol (CT, n = 12), low RT volume (LV = 3 sets for each exercise, n = 10), and high RT volume (HV = 6 sets for each exercise, n = 12). The LV and HV groups performed 8 exercises of a total body RT protocol 3 times a week, at 70% of 1 repetition maximum (1RM) for 16 weeks. Muscle strength and basal hormone concentrations were measured before and after RT. Our findings show that 3 sets or 6 sets at 70% of 1RM protocol increased muscular strength similarly after 16 weeks (sum of all exercises, LV37.7% and HV34.1% vs. CT2.1%, p < 0.001). Moreover, the RT volume does not affect basal levels of testosterone (TT) (LV0.02%, HV−0.12%, and CT0.006%, p = 0.233), cortisol (C) (LV72.4%, HV36.8%, and CT16.8%, p = 0.892), insulin-like growth factor-1 (LV6.7%, HV7.3%, and CT4.1%, p = 0.802), dehydroepiandrosterone sulfate (LV0.1%, HV−4.5%, and CT−6.7%, p = 0.885), and TT:C ratio (LV−0.9%, HV−1.6%, and CT−0.4%, p = 0.429). Our results suggest that 3 sets and 6 sets at 70% of 1RM seem to promote similar muscle strength gain. Thus, 3-set RT is a time efficient protocol for strength gain after 16 weeks in PW.
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ISSN:	1064-8011 1533-4287
DOI:	10.1519/JSC.0000000000001788