TITLE:
EEG-Related Changes to Fatigue during Intense Exercise in the Heat in Sedentary Women
AUTHORS:
Asma Kacem, Foued Ftaiti, Karim Chamari, Mohamed Dogui, Laurent Grélot, Zouhair Tabka
KEYWORDS:
Fatigue, Women, Brain, Intense Exercise, Hyperthermia
JOURNAL NAME:
Health,
Vol.6 No.11,
May
28,
2014
ABSTRACT: Purpose: This study examined the possible causal mechanisms of fatigue during intense exercise in the heat in a group of nine sedentary women. Methods: Two strenuous cycling sessions were performed, at 100% of maximal aerobic power, either in neutral (N-Ex, air temperature: 22°C ± 0.4°C, air humidity: 53% ± 8%) or in heat conditions (H-Ex, air temperature: 35°C ± 0.3°C, air humidity: 59 ± 6). Tympanic temperature (Tty), heart rate (HR), body mass loss (BML), lactate concentration [La] and brain electrical activity (EEG: α and β waves and α/β ratio) were recorded. Results: Tty, HR and [La] increases (p ﹣1) than that during N-Ex (0.08 ± 0.02°C·min﹣1), and time to exhaustion (Time Limit at 100%) was significantly (p β waves decreased (p α/β ratio increased (p