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- Title
Parasympathetic modulation during sleep time is reduced after maximal exercise, correlated with aerobic fitness in young women.
- Authors
Kolesny Tricot, Gabriel; Alves Araújo, Jaqueline; Isoton Novelli, Fabiula; Morais Puga, Guilherme; Arsa, Gisela; Cambri, Lucieli Teresa
- Abstract
It is known that cardiovascular risk is increased during exercise and recovery. Thus, it is necessary to assess all the risk associated with exercise to minimize the possibility of cardiovascular events. The aim of this study was to verify whether a maximal exercise alters ambulatory cardiac autonomic modulation in untrained women and whether aerobic fitness is correlated to cardiac autonomic modulation. Twelve women (25.35 ± 5.44 years) were outfitted with the Holter monitor on an experimental (after maximum exercise) and a control day to heart rate variability (HRV) evaluation. Maximal exercise increased 24 h heart rate (82 ± 14 vs 77 ± 11 bpm; p = 0.04) and during sleep time (72 ± 14 vs. 65 ± 9 bpm; p = 0.01), reduced parasympathetic modulation (HF -- n.u. 49.96 ± 11.56 vs 42.10 ± 14.98; p = 0.04), and increased low-frequency/high-frequency ratio (2.88 ± 3.24 vs 1.31 ± 0.60; p = 0.03) during sleep time compared to the control day. Aerobic fitness was correlated positively with LF, HF, and HF (n.u.) indices (r = 0.61 to 0.73, p < 0.05) and correlated negatively with LF (n.u.) and LF/HF ratio (Rho = - 0.57 to - 0.69; p < 0.05). Maximal exercise alters parasympathetic modulation during sleep time in untrained women. Ambulatory cardiac autonomic modulation after exercise is related to aerobic fitness.
- Subjects
AUTONOMIC nervous system physiology; AMBULATORY electrocardiography; CARDIOVASCULAR system physiology; PHYSICAL fitness; SLEEP; EXERCISE; DESCRIPTIVE statistics; HEART beat
- Publication
Brazilian Journal of Kineanthropometry & Human Performance, 2021, Vol 23, p1
- ISSN
1415-8426
- Publication type
Article
- DOI
10.1590/1980-0037.2021v23e83295