Metabolic response and muscle adaptations of postmenopausal women to high and low volume resistant training
Respuesta metabólica y adaptaciones musculares de mujeres posmenopáusicas al entrenamiento resistido de alto y bajo volumen
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Objective: Determine the metabolic and muscular responses produced by 12 weeks of two high and low volume resistance training programs in postmenopausal women. Material and method: The sample (n=36) was randomly divided into 3 groups, two experimental groups that executed 12 weeks in a high-volume resistive training program (ERAV, n=12, 3 sets of 15 repetitions for 8 exercises with increasing linear progressive increase in load) and another low volume group (ERBV, n=13, 1 series of 15 repetitions for 8 exercises with linear progressive increase in load), plus a control group (CG, n=11). Pre and post intervention, the metabolic response per training session (energy expenditure (EG), post-exercise excess oxygen consumption (CEOP) and total energy expenditure), strength and musculoskeletal quality were evaluated. Results: In the experimental groups, the increase in maximum strength (Kg) and muscle quality (Kg/cm3) had a statistical difference (ANOVA repeated measures) in relation to the control group (p <0.05), but without differences between both ( ERAV vs ERBV: p >0.05). The GE, CEOP and total GE (MJ) per training session were significantly
higher in the ERAV group in relation to ERBV in pre and post (p <0.05). However, the post-intervention increase in the experimental groups was not significant (p > 0.05). Conclusions: For postmenopausal women, 12 weeks of resistance training at low or high volumes guarantees positive muscular adaptations. However, a significant response in the metabolism of energy substrates is only achieved at high volumes.
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