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Updated: Aug 30, 2025

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Training History, Cardiac Autonomic Recovery from Submaximal Exercise and Associated Performance in Recreational

Matic Špenko1, Ivana Potočnik1, Ian Edwards2

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International Journal of Environmental Research and Public Health
|August 26, 2022
PubMed
Summary

Repeated short-lasting submaximal exercise (SSE) after a half-marathon reveals cardiac parasympathetic (cPS) dysfunction and rebound, impacting aerobic performance in runners. Daily SSE effectively monitors training history

Keywords:
endurance exerciseheart rate recoveryheart rate variabilitytraining recovery

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Area of Science:

  • Sports Medicine
  • Exercise Physiology
  • Cardiovascular Research

Background:

  • Prolonged exertion, like a half-marathon (HM), can disrupt autonomic nervous system function.
  • Cardiac parasympathetic (cPS) activity is crucial for recovery and aerobic performance.
  • Understanding cPS reorganization post-intense exercise is vital for training optimization.

Purpose of the Study:

  • To investigate the impact of prolonged exertion (HM) on cPS reorganization.
  • To assess the effect of repeated short-lasting submaximal exercise (SSE) on cPS recovery and aerobic performance.
  • To determine if daily SSE can serve as a tool to evaluate training history effects on cPS and aerobic capacity.

Main Methods:

  • 19 recreational runners underwent daily SSE for 7 days post-HM.
  • Heart rate (HR) and heart rate variability (HRV) indices (lnRMSSD, lnHF, lnLF/HF) were monitored.
  • HR recovery (HRR), aerobic performance, and rate of perceived exertion (RPE) were measured and correlated with cardiac indices.

Main Results:

  • Significant time effects were observed in HR, HRV, HRR, aerobic performance, and RPE throughout the study.
  • cPS dysfunction was indicated on the day of HM, followed by a cPS rebound effect one day post-HM, affecting HR and HRR.
  • Correlations were found between changes in cardiac indices and aerobic performance, suggesting a link between cPS recovery and power output.

Conclusions:

  • Daily SSE is a sensitive, noninvasive method to assess cPS reorganization and its impact on aerobic performance following prolonged exertion.
  • The study highlights a biphasic autonomic response (dysfunction then rebound) after a half-marathon.
  • SSE provides valuable insights into how training history influences cPS recovery and aerobic capacity in recreational athletes.