HEART RATE VARIABILITY DURING HIGH-INTENSITY EXERCISE
查看参考文献54篇
文摘
The aim of this paper is to describe and analyse the behaviour of heart rate variability (HRV) during constant-load,high-intensity exercise using a time frequency analysis (Wavelet Transform). Eleven elite cyclists took part in the study (age: 18.6±3.0 years; VO_(2max): 4.88±0.61 litres.min~(-1)). Initially,all subjects performed an incremental cycloergometer test to determine load power in a constant load-test (379.55±36.02 W; 89.0%). HRV declined dramatically from the start of testing (p <0.05). The behaviour of power spectral density within the LF band mirrored that of total energy,recording a significant decrease from the outset LF peaks fell rapidly thereafter,remaining stable until the end of the test. HF-VHF fell sharply in the first 20 to 30 seconds. The relative weighting (%) of HF-VHF was inverted with the onset of fatigue,[1.6% at the start,7.1 (p <0.05) at the end of the first phase,and 43.1% (p <0.05) at the end of the test]. HF-VHFpeak displayed three phases: a moderate initial increase,followed by a slight fall,thereafter increasing to the end of the test. The LF/HF-VHF ratio increased at the start,later falling progressively until the end of the first phase and remaining around minimal values until the end of the test.
来源
Journal of Systems Science and Complexity
,2013,26(1):104-116 【核心库】
DOI
10.1007/s11424-013-2287-y
关键词
Cycling
;
heart rate variability
;
wavelet
地址
1.
Department of Physical Education, University of Las Palmas de Gran Canaria, Spain, Spain
2.
Department of Physical Education, University of Las Palmas de Gran Canaria, Spain
3.
Physics Department, University of Las Palmas de Gran Canaria, Spain
4.
Department of Morphological Sciences, School of Medicine, University of Cordoba, Spain
5.
Physical Activity Sciences Faculty, Polytechnic University of Madrid, Spain
6.
Andalusian Centre of Sports Medicine, Spain, Cordoba
语种
英文
文献类型
研究性论文
ISSN
1009-6124
学科
数学
文献收藏号
CSCD:4803759
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54
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