Related Experiment Video
Updated: Nov 19, 2025

A Real-World High-Intensity Interval Training Protocol for Cardiorespiratory Fitness Improvement
Published on: February 22, 2022
Prescribing high-intensity interval exercise by rating of perceived exertion in young individuals
Isabela R Marçal1, Pedro G Falqueiro1, Bianca Fernandes1
1School of Sciences, Department of Physical Education, Exercise and Chronic Disease Research Laboratory (ECDR), São Paulo State University (UNESP), Bauru, Brazil.
Background:
We tested the hypothesis that the 6 to 20 rating of perceived exertion (RPE) is a cost-effective tool similar to heart rate (HR) response to cardiopulmonary exercise test for prescribing and self-regulating high-intensity interval exercise (HIIE). In this context, we analyzed if health-related responses to exercise are similar between HIIE prescribed and self-regulated by RPE (HIIE
Methods:
Twelve young (21±2 years) sedentary or insufficiently active individuals (weekly levels ˂150 minutes or 75 minutes of moderate- or vigorous-intensity physical activity, respectively) were randomly assigned to perform HIIE
Results:
Exercise HR, speed, and distance, as well as blood pressure response to exercise were not different between HIIE
Conclusions:
These results suggest that RPE is a cost-effective tool for prescribing self-regulating HIIE and improving health-related variables in young individuals.
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