Core body temperature correlates of transition from aerobic to anaerobic metabolism in running.

ABSTRACT:

Purpose

We investigated core body temperature (CBT) during a graded exercise test (GXT) in comparison with gas exchange dynamics.

Methods

Thirty-two active males performed a treadmill GXT (0.5 km/h increments every 30 seconds, 1.5% incline) until exhaustion. Gas exchange data and rectal temperature (T_re) were continuously registered. Ten participants repeated the test for reliability assessment. The first and second gas exchange thresholds (VT₁ and VT₂) were determined by the simplified V-slope method, while CBT dynamics and eventual temperature thresholds (TT₁ and TT₂) were assessed according to the criteria defined in this study. Three independent evaluators determined gas exchange and temperature thresholds.

Result

SUBMITTER: Rakovac M 

PROVIDER: S-EPMC12276734 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature