Fig. 8

Meta-analysis of RPE during submaximal exercise. A random effects model was used to determine the effect of post-exercise heat exposure (heat acclimation) on ratings of perceived exertion (RPE; arbitrary units, a.u.) during submaximal exercise. RPE data (Borg 6–20 and 0–10) were scaled to 0–100 before meta-analysis. Therefore, the post-intervention minus pre-intervention change scores (meanΔ) and the mean difference values are derived from pre- and post-intervention values that were scaled to 0–100. Please refer to the legend in Fig. 5 for details about the analysis and definitions of acronyms, etc.