Impact of prolonged exercise in the heat and carbohydrate supplementation on performance of a virtual environment task.
OBJECTIVE
The purpose of this investigation was to determine whether performance of a virtual environment (VE) task is influenced by exercise in the heat and carbohydrate supplementation.


METHODS
Ten males completed four exercise trials to fatigue. During each trial, subjects cycled at a submaximal workload. Subjects exercised in a normal environment (NORM) and in a hot environment on different occasions. During exercise, subjects drank 10 mL x kg(-1) x hour(-1) of body weight of a 6% carbohydrate beverage (CHO) or a placebo. Subjects completed a VE task before, during exercise, and after fatigue.


RESULTS
More failures occurred during placebo than CHO during exercise. The NORM CHO trial had the fewest failures at fatigue. More kills occurred during exercise in the NORM CHO.


CONCLUSIONS
Performance of a VE task was negatively influenced by prolonged exercise and heat stress. CHO supplementation may have a positive impact on performance of the VE task following prolonged exercise.
Bailey
Stephen P
SP
Elon University, Elon, NC 27244, USA.
Holt
Craig
C
Pfluger
Kent C
KC
La Budde
Zina
Z
Afergan
Daniel
D
Stripling
Roy
R
Miller
Paul C
PC
Hall
Eric E
EE
D000328:Adult; D004040:Dietary Carbohydrates / Q000008:administration & dosage*; D015444:Exercise / Q000502:physiology*; D005080:Exercise Test; D006358:Hot Temperature / Q000009:adverse effects*; D006801:Humans; D008297:Male; D008991:Monitoring, Physiologic / Q000379:methods; D010807:Physical Endurance / Q000502:physiology; D010919:Placebos; D013647:Task Performance and Analysis; D014481:United States
D004040:Dietary Carbohydrates; D010919:Placebos