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Original Article   

The Journal of Sports Medicine and Physical Fitness 2022 Mar 22

DOI: 10.23736/S0022-4707.22.13411-0


lingua: Inglese

A normalized rate of perceived exertion at ventilatory breakpoint for different exercise modalities and production of exercise intensity with self-regulation for Singapore children

Govindasamy BALASEKARAN , Dianna THOR, Yew C. NG, Peggy BOEY

Human Bioenergetics Laboratory, Physical Education & Sports Science, National Institute of Education, Nanyang Technological University, Singapore, Singapore


BACKGROUND: The purpose of this study was to identify a normalized RPE response at ventilatory breakpoint (Vpt) for male adolescents 13-17 years old, and whether these adolescents could self-regulate at target RPEs of 4 and 6.
METHODS: Twenty healthy males participated in the study, with 10 males in each of the cycling and walking/running groups. Participants performed orientation and VO2peak trials before performing a perceptual estimation exercise trial to obtain RPE Vpt, and two production trials to assess self-regulation ability.
RESULTS: Vpt corresponded to 67.7% VO2peak for the cycling group and 70.4% VO2peak for the walking/running group. There were no group differences on RPE-Overall Vpt (cycling: 4.6; walking/running: 4.4), RPE-Legs Vpt (cycling: 5.4; walking/running: 4.6), and RPE-Chest Vpt (cycling: 4.0; walking/running: 4.8). A normalized RPE-Overall Vpt response was identified at five. VO2 did not differ between the estimation and production trials at targets RPE of 4 (1.59 vs 1.57 L·min-1) and 6 (1.87 vs 1.79 L·min-1). Similarly, heart rate (HR) did not differ between estimation and production trials at targets RPE 4 (152.4 vs 151.1 beats·min-1) and 6 (167.1 vs 162.4 beats·min-1). Both VO2 and HR were significantly higher at RPE 6 compared to RPE 4. Responses were not affected by exercise mode or production sequence.
CONCLUSIONS: This study demonstrated that undifferentiated and differentiated RPE Vpt were similar between cycling and walking/running participants. Male adolescents between 13- and 17-year-olds were able to use the OMNI scale to self-regulate exercise intensities that would be useful in field settings.

KEY WORDS: Adolescents; Self-regulation; Physical activity; Exertion

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