Alterações da variabilidade da frequência cardíaca em mulheres adultas jovens após 24 sessões de Pilates

Abstract

This study investigated the acute and chronic effects of Pilates on heart rate variability, strength and body composition. Twenty-two sedentary women participated in the study, eleven in the Pilates Group (35.31 ± 1.39 years) and eleven in the Control Group (36.0 ± 1.33 years). Each training session consisted of warm-up, 11 exercises and final stretching, with 45 minutes, performed three times a week, lasting 8 weeks. The control group performed 35-minute relaxation three times a week for a total of 8 weeks. For inferential analysis we used generalized estimation equations adopting the covariates group interaction and measurement moment. When significant differences were detected, the Bonferroni post-hoc was used. For all analyzes a value of p≤0.05 was used and all calculations were performed using the SPSS 20.0 software. In the time domain the SD, variance and RMSSD parameters decreased at the acute session. Moreover, in the frequency domain, the LF and HF components decreased and the LF/HF ratio increased. In the acute post-intervention session, the LF/HF ratio increased, there was no significant difference in the other measures. Lumbar strength increased in the Pilates group, but manual strength was maintained. In addition, the fat percentage decreased. Thus, it can be said that acutely Pilates training represented a significant stimulus over the autonomic system, and cardiovascular adaptations analogous to the pre-intervention session were found in the acute post-intervention session, but did not differ in magnitude in relation to the control. In addition, Pilates can improve lower back strength and decrease body fat