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Typology of "Fatigue" by Heart Rate Variability Analysis in Elite Nordic-skiers.
Journal article

Typology of "Fatigue" by Heart Rate Variability Analysis in Elite Nordic-skiers.

  • Schmitt L National Centre of Nordic-Ski, Research and Performance, Premanon, France.
  • Regnard J Université de Franche-comte, Besancon, France.
  • Parmentier AL Clinical Research Methods Center, University Hospital of Besançon, Besançon, France.
  • Mauny F University Hospital of Besançon, Research Unit UMR6249, Chrono-Environment, Besançon, France.
  • Mourot L Culture Sport Health Society and Exercise Performance, Health, University of Franche-Comté,Innovation Platform, Besançon, France.
  • Coulmy N French Ski Federation, 50 rue des Marquisats, Annecy, France.
  • Millet GP Institute of Sport Sciences and Physical Education (ISSUL), University of Lausanne, Lausanne, Switzerland.
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  • 2015-08-08
Published in:
  • International journal of sports medicine. - 2015
Autonomic Nervous System
Fatigue
Female
Heart Rate
Humans
Male
Posture
Principal Component Analysis
Skiing
English This study investigated changes in heart rate variability (HRV) in elite Nordic-skiers to characterize different types of "fatigue" in 27 men and 30 women surveyed from 2004 to 2008. R-R intervals were recorded at rest during 8 min supine (SU) followed by 7 min standing (ST). HRV parameters analysed were powers of low (LF), high (HF) frequencies, (LF+HF) (ms(2)) and heart rate (HR, bpm). In the 1 063 HRV tests performed, 172 corresponded to a "fatigue" state and the first were considered for analysis. 4 types of "fatigue" (F) were identified: 1. F(HF(-)LF(-))SU_ST for 42 tests: decrease in LFSU (- 46%), HFSU (- 70%), LFST (- 43%), HFST (- 53%) and increase in HRSU (+ 15%), HRST (+ 14%). 2. F(LF(+) SULF(-) ST) for 8 tests: increase in LFSU (+ 190%) decrease in LFST (- 84%) and increase in HRST (+ 21%). 3. F(HF(-) SUHF(+) ST) for 6 tests: decrease in HFSU (- 72%) and increase in HFST (+ 501%). 4. F(HF(+) SU) for only 1 test with an increase in HFSU (+ 2161%) and decrease in HRSU (- 15%). Supine and standing HRV patterns were independently modified by "fatigue". 4 "fatigue"-shifted HRV patterns were statistically sorted according to differently paired changes in the 2 postures. This characterization might be useful for further understanding autonomic rearrangements in different "fatigue" conditions.
Language
  • English
Open access status
closed
Identifiers
Persistent URL
https://folia.unifr.ch/global/documents/148970
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