Hydration with isotonic affects markers of autonomic cardiac modulation and rate of sweating without aerobic exercise: a case study
Abstract
Different hydration strategies were ap-plied in sports practice However, the effects of these strategies have not been observed in markers of cardiac autonomic modulation and sweating rate. Therefore, the objective of this study was to analyze the effects of iso-tonic hydration on heart rate variability (HRV) and sweating rate. This study was carried out by a male, 37 years old and physically active. In the first ses-sion, an anthropometric evaluation and questionnaires were applied. The experimental test was performed in a spinning bike for 30 minutes with moderate intensity, and there was hy-dration with isotonic, in the values of 75m every 5 minutes of exercise. In the control test, 48hrs later, there was no type of hydration. On the days of the tests, initial and final weight were verified; Resting heart rate and recov-ery; As well as the application of the subjective perception of effort and af-fectivity scale. There were alterations in the HRV markers (LF and HF) and increased sweating rate in the control protocol. Thus, moderate-intensity physical exercise under conditions of hydration altered HRV and sweating rate.
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