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
Show full item record

SCOPUSTM   
Citations

32
checked on Mar 24, 2024

WEB OF SCIENCETM
Citations

26
checked on Feb 25, 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.