title: Impact of prolonged exercise in the heat and carbohydrate supplementation on performance of a virtual environment task.
abstract: 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.
authors.affiliation: Elon University, Elon, NC 27244, USA.
authors.forename: Stephen P
authors.initials: SP
authors.lastname: Bailey
authors.forename: Craig
authors.initials: C
authors.lastname: Holt
authors.forename: Kent C
authors.initials: KC
authors.lastname: Pfluger
authors.forename: Zina
authors.initials: Z
authors.lastname: La Budde
authors.forename: Daniel
authors.initials: D
authors.lastname: Afergan
authors.forename: Roy
authors.initials: R
authors.lastname: Stripling
authors.forename: Paul C
authors.initials: PC
authors.lastname: Miller
authors.forename: Eric E
authors.initials: EE
authors.lastname: Hall
mesh_terms: 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
chemical_list: D004040:Dietary Carbohydrates; D010919:Placebos