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Conducting Maximal and Submaximal Endurance Exercise Testing to Measure Physiological and Biological Responses to Acute Exercise in Humans
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A Perceptually Regulated Exercise Test for Predicting Maximal Oxygen Consumption in Masters Track-and-Field Athletes.

Keely A Shaw1, Scott C Forbes2, Ainsley Bristol3

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Journal of Aging and Physical Activity
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PubMed
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Submaximal perceptually regulated exercise tests show moderate correlation with maximal oxygen uptake in master athletes. However, the prediction accuracy is insufficient for tracking short-term changes due to large standard errors.

Keywords:
aerobic fitnessaerobic powerratings of perceived exertion

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Area of Science:

  • Sports Medicine
  • Exercise Physiology
  • Gerontology

Background:

  • Submaximal exercise tests offer advantages over maximal tests for health and performance.
  • The validity of submaximal perceptually regulated exercise tests (PREXT) for assessing maximal oxygen uptake (V˙O2max) in master athletes remains unestablished.

Purpose of the Study:

  • To evaluate the accuracy of a PREXT in predicting V˙O2max in masters track-and-field athletes.
  • To determine if PREXT is a valid alternative to direct V˙O2max measurement in this population.

Main Methods:

  • Fifty-five master athletes completed both a maximal graded exercise test and a PREXT.
  • V˙O2max was directly measured, while PREXT involved self-regulated intensity extrapolated to high perceived exertion levels and age-predicted maximal heart rate.

Main Results:

  • Extrapolation to a rating of perceived exertion (RPE) of 20 significantly overpredicted V˙O2max.
  • Predictions using RPE 18, RPE 19, and age-predicted maximal heart rate showed no significant difference from measured V˙O2max.
  • Correlations for predicting V˙O2max ranged from 0.68 to 0.71, with standard errors of the estimate between 8.6 and 11.3 ml·kg−1·min−1.

Conclusions:

  • PREXT demonstrates moderate correlation with actual V˙O2max in master athletes.
  • The standard errors of the estimate are too large for PREXT to accurately track short-term changes in V˙O2max related to aging or training.
  • PREXT may not provide sufficient accuracy for monitoring V˙O2max in master athletes.