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Validity, Reliability, and Application of the Session-RPE Method for Quantifying Training Loads during High Intensity

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The session rate of perceived exertion (sRPE) method is a valid tool for measuring training load in high-intensity functional training (HIFT). However, its reliability is limited by participants

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Area of Science:

  • Sports Science
  • Exercise Physiology
  • Training Load Monitoring

Background:

  • Quantifying external training loads in high-intensity functional training (HIFT) is challenging due to its complex nature.
  • The session rate of perceived exertion (sRPE) method is often used when objective load measurement is difficult.
  • No prior studies have examined the psychometric properties of sRPE specifically within HIFT interventions.

Purpose of the Study:

  • To investigate the validity and reliability of the sRPE method for monitoring training load in HIFT.
  • To assess the psychometric properties of sRPE across individual, group, and sex levels in a HIFT context.

Main Methods:

  • Twenty-five healthy participants completed a six-week HIFT program.
  • Session rate of perceived exertion (sRPE) and heart rate were recorded in every training session.
  • sRPE measures were compared against criterion heart rate-based measures to assess validity and reliability.

Main Results:

  • The sRPE method demonstrated validity as a tool for assessing training load in HIFT across different levels.
  • Poor reliability was observed in participants' ability to accurately match sRPE with physiological effort (percentile of maximum heart rate).
  • Both validity and reliability of sRPE appeared to improve over the intervention period.

Conclusions:

  • The sRPE method is a valid, though not perfectly reliable, tool for monitoring training load in HIFT.
  • Further research is needed to enhance the utility and improve the reliability of sRPE within HIFT interventions.
  • The potential of sRPE as a practical monitoring strategy in HIFT warrants continued investigation.