Figure 1.

Flowchart of the process of identification, selection, eligibility, and inclusion of studies investigating the core body temperature in rats subjected to treadmill running until they were fatigued or exhausted. The screening process is based on the PRISMA flow diagram. Briefly, inadequate publication type included review articles and proceedings abstracts, whereas inadequate study design included other exercise types (i.e. swimming and running wheel), exercise with predetermined duration (not to fatigue or exhaustion), experiments with isolated tissues, and using heat-acclimated rats.