A Model for the Training Effects in Swimming Demonstrates a Strong Relationship between Parasympathetic Activity, Performance and Index of Fatigue

Sébastien Chalencon, Thierry Busso, Jean-René Lacour, Martin Garet, Vincent Pichot, Philippe Connes, Charles Philip Gabel, Frédéric Roche and Jean Claude Barthélémy

PLOS ONE, 2012, vol. 7, issue 12, 1-10

Abstract: Competitive swimming as a physical activity results in changes to the activity level of the autonomic nervous system (ANS). However, the precise relationship between ANS activity, fatigue and sports performance remains contentious. To address this problem and build a model to support a consistent relationship, data were gathered from national and regional swimmers during two 30 consecutive-week training periods. Nocturnal ANS activity was measured weekly and quantified through wavelet transform analysis of the recorded heart rate variability. Performance was then measured through a subsequent morning 400 meters freestyle time-trial. A model was proposed where indices of fatigue were computed using Banister’s two antagonistic component model of fatigue and adaptation applied to both the ANS activity and the performance. This demonstrated that a logarithmic relationship existed between performance and ANS activity for each subject. There was a high degree of model fit between the measured and calculated performance (R2 = 0.84±0.14,p

Date: 2012
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0052636

DOI: 10.1371/journal.pone.0052636

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