Impact of Fluid Restriction and ad Libitum Water Intake or an 8% Carbohydrate-Electrolyte Beverage on Skill Performance of Elite Adolescent Basketball Players

Jul 2, 2011International journal of sport nutrition and exercise metabolism

How limited water, free water, or a sports drink affect skill performance in elite teenage basketball players

AI simplified

Circadian Biology on OpenScience ↗PubMed ↗DOI ↗

Abstract

Fluid restriction during exercise resulted in a 2.46% average body weight loss among athletes.

Weight loss was significantly higher when no fluid was ingested compared to drinking water (1.08%) or a carbohydrate-electrolyte beverage (0.65%).
Perceived exertion was greater when no fluid was consumed (16.8) versus when athletes had access to water (14.2) or the carbohydrate-electrolyte beverage (13.3).
Fluid intake was positively correlated with self-reported hydration knowledge and behaviors, with correlation coefficients of 0.75 and 0.76, respectively.
No significant difference in basketball performance was noted between the fluid ingestion conditions.

AI simplified

Twelve adolescent athletes underwent, in a crossover-design study, 3 separate 90-min training sessions in the following conditions: no fluid ingestion allowed (NF), ad libitum ingestion of water (W), and ad libitum ingestion of a commercial 8% carbohydrate-electrolyte sports beverage (CSB). After each session athletes performed a set of basketball drills (2-point, 3-point, and free-throw shootout, suicide sprints, and defensive zigzags). Body weight (before and after sessions), rating of perceived exertion (RPE), urine color, and beverage acceptability were determined in each session. Athletes also completed a survey about their knowledge and behaviors regarding hydration and fluid replacement. The percentage of weight loss was significantly higher in NF (2.46% ± 0.87%) than in the other 2 conditions (W, 1.08% ± 0.67%, p = .006; CSB, 0.65% ± 0.62%, p = .001) but also higher in W than CSB (p = .012). RPE was higher in NF (16.8 ± 1.96) than in the W (14.2 ± 1.99, p = .004) and CSB (13.3 ± 2.06, p = .002) trials. Athletes' fluid intake was positively correlated with proper self-reported behaviors (r = .75, p = .005) and knowledge (r = .76, p = .004) about fluid and hydration. In conclusion, fluid restriction during exercise was associated with a greater level of dehydration and increased perceived exertion but had no impact on basketball performance compared with ad libitum drinking of water or a CSB. Athletes with more knowledge about hydration and better self-reported hydration behaviors ingested more fluids during training sessions.

Full Text

Full text is available at the source.

View full text (HTML) ↗View full text ↗

Impact of Fluid Restriction and ad Libitum Water Intake or an 8% Carbohydrate-Electrolyte Beverage on Skill Performance of Elite Adolescent Basketball Players

Abstract

Full Text

You found one interesting study. We’ll send the next 7.

what lands in your inbox each week:

Recent issues from the circadian biology brief

Abstract

Full Text

Related papers

You found one interesting study. We’ll send the next 7.

what lands in your inbox each week:

Recent issues from the circadian biology brief