Fig. 2

Descriptive statistics of the mean heart rate (HR) and rate of perceived exertion (RPE) for the overall participants, and split by age group (under-16, U16; and under-19, U19). *Significantly different within-group. (a) meanHR of the overall group; (b) meanHR of the under-16; (c) meanHR of the under-18; (d) RPE of the overall group; (e) RPE of the under-16; (f) RPE of the under-19