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Appears in Collections:Faculty of Health Sciences and Sport Journal Articles
Peer Review Status: Refereed
Title: Carbohydrate-electrolyte drink ingestion and skill performance during and after 2 hr of indoor tennis match play
Author(s): McRae, Kirsty A
Galloway, S D
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Keywords: fatigue
notational analysis
sport drink
Issue Date: Feb-2012
Citation: McRae KA & Galloway SD (2012) Carbohydrate-electrolyte drink ingestion and skill performance during and after 2 hr of indoor tennis match play, International Journal of Sport Nutrition and Exercise Metabolism, 22 (1), pp. 38-46.
Abstract: Twenty-two tennis players were individually studied on 2 occasions. They performed a prematch skill test, a 2-hr tennis match against an equally ranked opponent, and a postmatch skill test. A carbohydrate-electrolyte (CHO-E; Lucozade Sport) or flavor-matched placebo-electrolyte (PL) beverage was administered in a double-blind fashion. During the trials, heart-rate and movement intensity were monitored, and the match was recorded for performance analysis. There were no differences in skill-test scores pre- to postmatch or between trials (154 ± 38 pre- and 160 ± 35 postmatch on PL, 155 ± 36 pre- and 165 ± 33 postmatch on CHO-E). CHO-E ingestion elevated blood glucose concentration throughout the match, and participants reported feeling more energetic (general activation) and more tense (high activation) 1 hr into the match than at baseline (p less than .05). Participants in the CHO-E trial spent more time in moderate-intensity activity and less time in low-intensity activity than on PL. Performance analysis revealed that CHO-E ingestion increased overall serve success (M ± SD, 68% ± 7% for CHO-E vs. 66% ± 7% for PL; p less than .05) and success of first serves (65% ± 9% for CHO-E, 61% ± 7% for PL; p less than .01) and serves to the advantage side (70% ± 9% for CHO-E, 66% ± 7% for PL; p less than .05). Return success was greater during the second set of the match (p less than .05) in the CHO-E trial. Differences in serve and return success were not associated with blood glucose response to CHO or player ability
Rights: Publisher allows this work to be made available in this repository. Published in International Journal of Sport Nutrition and Exercise Metabolism by Human Kinetics with the following policy: the author retains the right to post an electronic version of the finalized article on electronic repositories controlled by the authors’ institution, provided that the electronic version is in PDF or other image capturing format.

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