Heart rate variability is a non-invasive method of assessing global health through the analysis of the autonomous centralnervous system, including both the sympathetic and parasympathetic systems. The aim of this study was to evaluate the effect of resistance training on heart rate variability at rest in elderly individuals undergoing six months of resistance training with progressive loads. Training reduced the body fat percentage of the volunteers (pre: 39.39 ± 7.21 vs post: 34.97 ± 6.40%; = 0.0069). There was also a significant reduction in the low-frequency index (pre: 69621.50 ± 9817.28 vs post: 54210.50 ± 14903.94; = 0.0322) and a significant increase in the high-frequency index (pre: 30308.00 ± 9857.86 vs post: 45627.10 ± 14838.80; = 0.0326). We concluded that sixmonths of resistance training with progressive loads were beneficial for heart rate variability and reduced the body fat percentage in the elderly.
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