Starving your performance? reduced preexercise hunger increases resistance exercise performance

Naharudin, Mohamed Nashrudin and Yusof, Ashril and Clayton, David J. and James, Lewis J. (2022) Starving your performance? reduced preexercise hunger increases resistance exercise performance. International Journal of Sports Physiology and Performance, 17 (3). pp. 458-464. ISSN 1555-0265, DOI

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Background: Preexercise food intake enhances exercise performance due, in part, to the provision of exogenous carbohydrate. Food intake also suppresses hunger, but the specific influence of hunger on exercise performance has not been investigated. This study aimed to manipulate hunger by altering preexercise meal viscosity to examine whether hunger influences performance. Methods: Sixteen resistance-trained males completed 2 experimental trials ingesting either high viscosity semisolid (SEM) and low viscosity liquid (LIQ) carbohydrate-containing meals 2 hours before performing 4 sets of back squat (85 22] kg) and bench press (68 13] kg) to failure at 90% 10-repetition maximum. Subjective hunger/fullness as well as plasma concentrations of glucose, insulin, ghrelin, and peptide tyrosine-tyrosine were measured before and periodically after the meal. Repetitions completed in sets were used to determine exercise performance. Results: Hunger was lower, and fullness was greater during SEM compared with LIQ immediately before and during exercise (P < .05). Total repetitions completed for back squat were approximately 10% greater in SEM (SEM 57 9]; LIQ 51 7] repetitions; P = .001) with no difference in bench press repetitions (SEM 48 11]; LIQ 48 10] repetitions; P = .621). Postprandial glucose concentrations were greater during LIQ (12% increase in peak glucose) but were similar throughout exercise. Conclusion: This study demonstrates that exercise performance in back squat was increased in the SEM trial concomitant to a reduction in hunger. Therefore, this study provides novel data that suggest that exercise performance might be influenced by hunger, at least for resistance exercise.

Item Type: Article
Funders: Universiti Malaya [RU027-2015], Entrinsic Beverage Company LLP, Herbalife Europe Ltd, Bridge Farm Nurseries, Decathlon SA, PepsiCo Inc, Volac International, CSES research grant [GPF020F-2020]
Uncontrolled Keywords: Weight training; Appetite; Liquid meal; Solid meal; Satiety
Subjects: G Geography. Anthropology. Recreation > GV Recreation Leisure
Q Science > QP Physiology
Divisions: Faculty of Sports and Exercise Science (formerly known as Centre for Sports & Exercise Sciences)
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 10 Aug 2022 01:47
Last Modified: 10 Aug 2022 01:47

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