High-intensity functional training and quantification by Perceived Exertion Scale in physically active subjects

Abstract

The purpose of the study was to determine the relationship between internal and external load in physically active subjects (11 men and 5 women) during a high-intensity functional training session, using different load markers: heart rate, perceived effort and the Edwards index. The maximum heart rate was assessed during a maximal incremental endurance test (Course Navette). Thereafter each participant performed a high-intensity functional training session (Workout of the Day-Pukie), while wearing a heart rate monitor, and the perceived effort was assessed with the 0-10 point scale at 0-min, 10-min, 20-min, and 30-min. Thereafter the Edwards index was calculated. The perceived effort was positively correlated with the heart rate and the Edwards index during the different time-points analyzed (Spearman r = 0,76-0,88; p<0,01). In conclusion, perceived effort can be used as a low-cost and logistically convenient method to assess the internal load experienced by physically active participants during a high-intensity functional training session.