G. K. Tricot, J. A. Araújo, F. Novelli, G. Puga, G. Arsa, L. Cambri
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引用次数: 0
摘要
众所周知,在运动和恢复过程中,心血管疾病的风险会增加。因此,有必要评估与运动相关的所有风险,以尽量减少心血管事件的可能性。本研究的目的是验证最大运动是否会改变未经训练的女性的动态心脏自主调节,以及有氧适能是否与心脏自主调节相关。12名女性(25.35±5.44岁)在实验(最大运动后)和对照日配备霍尔特监测仪进行心率变异性(HRV)评估。最大运动增加24小时心率(82±14 vs 77±11 bpm);P = 0.04)和睡眠时间(72±14比65±9 bpm;p = 0.01),副交感神经调节降低(HF - n.u: 49.96±11.56 vs 42.10±14.98;P = 0.04),低频/高频比值增加(2.88±3.24 vs 1.31±0.60;P = 0.03)。有氧适宜度与LF、HF和HF (n.u)指数呈正相关(r = 0.61 ~ 0.73, p < 0.05),与LF (n.u)和LF/HF比呈负相关(Rho = - 0.57 ~ - 0.69;P < 0.05)。在未受过训练的女性中,最大运动改变睡眠期间的副交感神经调节。运动后动态心脏自主调节与有氧适能有关。
Parasympathetic modulation during sleep time is reduced after maximal exercise, correlated with aerobic fitness in young women
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.
期刊介绍:
The Brazilian Journal of Kinanthropometry and Human Performance is a journal of Physical Education, Kinesiology, Sport and related areas, whose focus is human movement, being reviewed by an international panel of peers, with emphasis on the measurement of the man in its morphological and functional aspects, as well as conditioning factors of physical performance. Given the multidisciplinary nature of the journal, these areas of study are approached in several contexts, with interactions with social, behavioral, health and environmental aspects. The journal publishes original articles as well as relevant Review/Update articles and Points of View.