Cardiac autonomic responses to high-intensity kettlebell training in untrained young women: A pilot study

and purpose: The autonomic recovery after exercise provides information about the cardiovascular overload employed during the training session. The autonomic response over a training course is unclear in exercises performed at high intensities, such as kettlebell training. The study aimed to characterize the cardiac autonomic modulation after exercise in three distinct phases of a high-intensity kettlebell training program in young women. Ten women (25.0 ± 2.9 years; 23.4 ± 3.0 kg/m2) were submitted to 10 weeks of training divided into three phases (three times a week). The autonomic response was measured in the pre-exercise and at 10, 20, and 30 min of recovery and evaluated temporal and linear analysis of heart rate variability (HRV) indices. vigorous intensity was performed in the sessions (75–86% HRmax). There was a significant reduction of HRV measured during post-exercise recovery (p