title: Sports drinks, exercise training, and competition.
abstract: A plethora of investigations examining fluid intake before, during, and after training and competition have suggested that a lack of adequate fluid intake will impair or decrease physical performance. Depending upon the type of training or competition, individuals training for prolonged endurance events should drink fluids containing carbohydrates and electrolytes during and after training or competition. Inadequate hydration will cause significant decrements in performance, increase thermal stress, reduce plasma volume, accelerate fatigue, and possibly cause injuries associated with fluid and sweat loss. However, overdrinking may cause Na+ depletion and in some cases lead to hyponatremia. Maintaining proper hydration before, during, and after training and competition will help reduce fluid loss, maintain performance, lower submaximal exercise heart rate, maintain plasma volume, and reduce heat stress, heat exhaustion, and possibly heat stroke.
authors.affiliation: Human Performance Laboratory, Department of Health and Human Performance, Texas A&M University-Commerce, Commerce, Texas 75429-3011, USA. serge_vonduvillard@tamu-commerce.edu
authors.forename: Serge P
authors.initials: SP
authors.lastname: von Duvillard
authors.forename: Paul J
authors.initials: PJ
authors.lastname: Arciero
authors.forename: Tara
authors.initials: T
authors.lastname: Tietjen-Smith
authors.forename: Ken
authors.initials: K
authors.lastname: Alford
mesh_terms: D001628:Beverages; D003163:Competitive Behavior; D003681:Dehydration / Q000503:physiopathology; D002149:Energy Intake; D006801:Humans; D010809:Physical Fitness / Q000502:physiology*; D013177:Sports; D014882:Water-Electrolyte Balance / Q000502:physiology