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Exercise significantly impacts cardiovascular response, which is crucial for understanding patient health and designing effective treatment plans.
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Regular physical activity is essential for maintaining cardiovascular health, with aerobic exercises being particularly effective. According to the American Heart Association, 150 minutes of moderate to intense aerobic exercise per week is recommended for a healthy heart. Aerobic activities may include brisk walking, running, bicycling, cross-country skiing, and swimming, ideally performed three to five times per week.
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How to Equalize High- and Low-Intensity Endurance Exercise Dose.

Pekka Matomäki1,2, Olli-Pekka Nuuttila1,3, Olli J Heinonen2

  • 1Faculty of Sport and Health Sciences, University of Jyväskylä, Jyvaskyla, Finland.

International Journal of Sports Physiology and Performance
|July 20, 2024
PubMed
Summary

Comparing high-intensity (HI) and low-intensity (LI) exercise requires standardized doses. This review estimates the conversion ratio between HI and LI, finding significant variation based on quantification methods used.

Keywords:
TRIMPhigh-intensity traininglow-intensity trainingsession RPEtraining load

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Area of Science:

  • Exercise Physiology
  • Sports Science
  • Training Methodology

Background:

  • Standardization of exercise doses is crucial for comparing high-intensity (HI) and low-intensity (LI) training outcomes.
  • Proper quantification of exercise ensures an optimized stress-to-recovery balance in athletic preparation.
  • Current literature lacks a consensus on the conversion ratio between HI and LI exercise doses.

Purpose of the Study:

  • To theoretically estimate the conversion ratio (1:x) between HI and LI exercise doses.
  • To determine how many minutes of LI exercise are equivalent to one minute of HI exercise.
  • To analyze how exercise dose changes with duration and intensity.

Main Methods:

  • Estimation of HI:LI ratios across 10 different quantification approaches, categorized into four groups.
  • Group 1: 'Arbitrary' methods.
  • Group 2: Physiological and perceptual measurements during exercise.
  • Group 3: Postexercise measurements.
  • Group 4: Comparison to acute and chronic intensity-related maximum doses.

Main Results:

  • The HI:LI ratio varied significantly based on the quantification method, ranging from 1:1.5-1:10 (conservative) to over 1:52 (acute maximum dose comparison).
  • Physiological and perceptual methods yielded ratios between 1:1.5-1:10, while postexercise measurements suggested 1:4-1:11.
  • Comparison to acute maximum doses provided the highest estimations (1:52+), with chronic comparisons suggesting 1:10 to 1:20.
  • Exercise dose generally increases linearly with duration and exponentially with intensity.

Conclusions:

  • Divergent dose estimations highlight the significant impact of metric choice on research design, results, and interpretation.
  • Researchers must understand the strengths and weaknesses of chosen metrics and provide clear justifications.
  • The assumed linear relationship between exercise duration and dose requires closer scrutiny and empirical testing.