Please use this identifier to cite or link to this item:
http://hdl.handle.net/10553/53348
Title: | Heart rate variability during high-intensity exercise | Authors: | Sarmiento, Samuel Garcia-Manso, Juan Manuel Martin-Gonzalez, Juan Manuel Vaamonde, Diana Calderon, Javier Da Silva-Grigoletto, Marzo Edir |
Keywords: | Respiratory Sinus Arrhythmia Autonomic Nervous-System Spectral-Analysis Dynamic Exercise Blood-Pressure, et al |
Issue Date: | 2013 | Publisher: | 1009-6124 | Journal: | Journal of Systems Science and Complexity | Abstract: | 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; VO2max: 4.88 +/- 0.61 litres center dot 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. | URI: | http://hdl.handle.net/10553/53348 | ISSN: | 1009-6124 | DOI: | 10.1007/s11424-013-2287-y | Source: | Journal Of Systems Science & Complexity[ISSN 1009-6124],v. 26 (1), p. 104-116 |
Appears in Collections: | Artículos |
SCOPUSTM
Citations
32
checked on Oct 6, 2024
WEB OF SCIENCETM
Citations
26
checked on Oct 6, 2024
Page view(s)
44
checked on Feb 3, 2024
Google ScholarTM
Check
Altmetric
Share
Export metadata
Items in accedaCRIS are protected by copyright, with all rights reserved, unless otherwise indicated.