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Autonomic nervous system activity and Performance in competitive swimming

Faculté de Médecine Jacques Lisfranc. Saint-Etienne Université Jean Monnet. Saint-Etienne. S ynapse The Research Group. Autonomic nervous system activity and Performance in competitive swimming. Martin Garet , Nicolas Tournaire, Frédéric Roche, Renaud Laurent,

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Autonomic nervous system activity and Performance in competitive swimming

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  1. Faculté de Médecine Jacques Lisfranc Saint-Etienne Université Jean Monnet Saint-Etienne Synapse The Research Group Autonomic nervous system activity and Performance in competitive swimming Martin Garet, Nicolas Tournaire, Frédéric Roche, Renaud Laurent, Jean-René Lacour, Jean-Claude Barthélémy, Vincent Pichot PPEH Research Group CHU Saint-Etienne Faculté de Médecine Jacques Lisfranc Université Jean Monnet UFR STAPS Clermont-Ferrand, France

  2. Autonomic Nervous System - Parasympathetic - Sympathetic

  3. R-R variability in the recovery phase after a strenuous physical exercise Exercise Before Exercise May determine cumulated decrease Rebound Furlan et al. (1993)

  4. * * * * Exercise, cumulated fatigue 100 HF wavelets (%) 50 0 W1 W2 W4 Rest W3 W1 W2 W3 W4 Rest Athletes Workers Pichot V. et al. , Pflügers Archiv,2002 Pichot V. et al. Med Sci Sports Exerc, 2000

  5. Training.Improve performance. Cycle Training Training Training rest rest rest Load Rebound Favorable HRV Load Overload Unfavorable HRV Overtraining ? Pichot, Med Sci Sports Exerc, 2000 Pichot, Med Sci Sports Exerc, 2002 Pichot, Pflügers, 2002

  6. ANS - Performance Cross-sectional Longitudinal 7 10000 6 8000 HRV (Ptot) ln VHP (ms) 5 6000 4 4000 3 2000 30 40 50 60 70 80 30 40 50 60 70 . . VO2max,mL.kgMM-1.min-1 VO2max,mL.kgMM-1.min-1 Kenney W.L. Exercise Physiology Current Selected Research, 1988 Pichot V. et al. Med Sci Sports Exerc, 2002

  7. Study

  8. ANS – Training Load ANS - Performance Group level ? Individual monitoring Individual level Tapering Overtraining prevention

  9. Timing of measurements RP1 TP RP2 Baseline HRV HRV HRV HRV HRV HRV Training Period Resting Tapering W0 W1 W2 W3 W4 W5 Perf 1 Perf 2 Perf 3 • 7 regional-level swimmers (4 boys, 3 girls) • 16.6±0.5 years • 6.4±0.9 years of practice • 400 m freestyle Population

  10. W5 W1 W2 W3 W4 Training load Training load CERT 160 10 * 9 140 * 8 120 7 100 6 Training load CERT 80 5 § * 4 60 3 40 * 2 - 69.1 % during W4 and W5 20 1 0 0

  11. ANS evolution group level 200 NS 175 150 NS 125 HF WT (% Perf 1) 100 75 50 25 71.30±52.60% 115.25±57.48% 0 Perf 2 (W3) Perf 3 (W5) Perf 1

  12. 200 S1 S5 S2 S6 S4 175 S3 S7 150 S4 125 S3 S5 HF WT (% Perf 1) 100 S1 S7 75 50 S6 S2 25 0 Perf 2 (W3) Perf 3 (W5) Perf 1 ANS evolution individual level

  13. Rebound - Performance ± P1 P3 Relative values, HF% 5’03 4’54 = - 9 s 254 % 5’10 5’04 = - 6 s 148 % 100 5’10 5’16 = + 6 s -35 % P2 P3 P1 Garet M. et al. In press, 2004 Rest Training Rest

  14. Delta Perf = -1.232 - 1.625 * Delta HF (WT) R2 = 0.50 20 15 10 5 Delta Perf (s) 0 -5 -10 -4 -2 0 2 4 6 8 10 -6 Delta HF (WT)

  15. Conclusion Highly individual - ANS answer to training load - Supercompensation - Speed of rebound Common rule: High correlation between: - ANS activity level and performance - Respective variations in ANS and in performance Optimize training load Optimize tapering

  16. Synapse Research Group Engineers Vincent PICHOT David DUVERNEY Sébastien CELLE Anestis ANTONIADIS MD, PhD Jean-Claude BARTHELEMY Frédéric ROCHE Frédéric COSTES David CHARIER Jean-René LACOUR PhD Students Nicolas DESVIGNE Martin GARET Marc CHARLES Sébastien CELLE Francis DEGACHE Neurophysiologist Frédérique BERTHOLON E-mail: martingaret@hotmail.com

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