Percepción de la intensidad al esfuerzo: un estudio multi-method en actividad física

Abstract

3 Facultad de Psicologia-Universidad de Barcelona (Espana) Abstract : >e current study had two aims: a) to determine whether the three Borg scale values assigned by young athletes to three activities of in- creasing intensity showed a signi+cant progression; and b) to analyse the relationship between the body mass index (BMI) of these athletes and their heart rate (HR) and rating of perceived exertion (RPE). Method: >irty- +ve young athletes (mean age 21 years ± 0.5) performed three activities involving an increasing intensity of exercise: mild, moderate and vigorous (ACSM, 2011). Heart rate was monitored using the Polar Team 2 system, and at the end of each activity participants completed the Borg RPE scale. Indirect observational methodology (Borg scale) was complemented by a quasi-experimental approach in order to make causal inferences by means of a synchronous design involving a known assignment variable and a single group. A multiple regression analysis was performed, considering HR and RPE as predictors of BMI. Results: >e RPE of all participants incr eased across the three activities, but in no case did the trend achieve statistical signi+cance. Participants with higher values of HR and RPE also had a higher BMI, and in the regression analysis HR and RPE explained around one-quarter of BMI. >is study provides an integrated assessme nt of the relationship between BMI, HR and RPE factors that are usually examined