open access

Vol 9, No 1 (2014)
Original Papers
Published online: 2014-03-19
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Influence of tilt up on the activity of autonomic nervous system in professional swimmers

Klaudia Palak, Agata Furgała, Mateusz Zubik, Zbigniew Szyguła, Piotr J. Thor
Folia Cardiologica 2014;9(1):18-25.

open access

Vol 9, No 1 (2014)
Original Papers
Published online: 2014-03-19

Abstract

Introduction. Evaluation of heart rate variability (HRV) constitutes a useful tool in the analysis of changes in the autonomic nervous system (ANS), occurring as an adaptation to physical exercise. Changing body position from supine to standing upright is reflected by higher activity of the sympathetic ANS component. The aim of this study was to analyze the effect of tilting up on the activity of ANS in professional swimmers.

Material and methods. The study included 10 healthy swimmers in the transitory phase of their training cycle, and the control group comprising 31 healthy volunteers. The evaluation of ANS activity was based on the temporal and spectral indices of HRV, as well as on the analysis of changes in arterial blood pressure and heart rate at rest and during Tilt-UpTest (TUT), determined prior to and after the training.

Results. Prior to the training, the tilting up of swimmers was reflected by a significant decrease in: rMSSD, pNN50, HF,NHF, as well as by an increase in VLF and LF/HF (p < 0.05). After the training, a significant decrease in: pNN50, HF and NHF was documented after position changes, along with an increase in NLF and LF/HF (p < 0.05).

Conclusions. The change of position (tilt up) induced significant changes in all studied vegetative indices, suggesting an increase in sympathetic tone. The TUT protocol used in this study can be useful in the evaluation of the vegetative response of athletes to external stimulation; this application can be important in the context of overtraining prevention.

Abstract

Introduction. Evaluation of heart rate variability (HRV) constitutes a useful tool in the analysis of changes in the autonomic nervous system (ANS), occurring as an adaptation to physical exercise. Changing body position from supine to standing upright is reflected by higher activity of the sympathetic ANS component. The aim of this study was to analyze the effect of tilting up on the activity of ANS in professional swimmers.

Material and methods. The study included 10 healthy swimmers in the transitory phase of their training cycle, and the control group comprising 31 healthy volunteers. The evaluation of ANS activity was based on the temporal and spectral indices of HRV, as well as on the analysis of changes in arterial blood pressure and heart rate at rest and during Tilt-UpTest (TUT), determined prior to and after the training.

Results. Prior to the training, the tilting up of swimmers was reflected by a significant decrease in: rMSSD, pNN50, HF,NHF, as well as by an increase in VLF and LF/HF (p < 0.05). After the training, a significant decrease in: pNN50, HF and NHF was documented after position changes, along with an increase in NLF and LF/HF (p < 0.05).

Conclusions. The change of position (tilt up) induced significant changes in all studied vegetative indices, suggesting an increase in sympathetic tone. The TUT protocol used in this study can be useful in the evaluation of the vegetative response of athletes to external stimulation; this application can be important in the context of overtraining prevention.

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Keywords

autonomic nervous system, physical exercise, heart rate variability, tilt up, swimmers

About this article
Title

Influence of tilt up on the activity of autonomic nervous system in professional swimmers

Journal

Folia Cardiologica

Issue

Vol 9, No 1 (2014)

Pages

18-25

Published online

2014-03-19

Bibliographic record

Folia Cardiologica 2014;9(1):18-25.

Keywords

autonomic nervous system
physical exercise
heart rate variability
tilt up
swimmers

Authors

Klaudia Palak
Agata Furgała
Mateusz Zubik
Zbigniew Szyguła
Piotr J. Thor

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