Caffeine ingestion, affect and perceived exertion during prolonged cycling

Backhouse, Susan H. and Biddle, Stuart J. H. and Bishop, Nicolette C. and Williams, Clyde (2011) Caffeine ingestion, affect and perceived exertion during prolonged cycling. Appetite, 57 (1). pp. 247-252. ISSN 0195-6663

Abstract

Caffeine's metabolic and performance effects have been widely reported. However, caffeine's effects on affective states during prolonged exercise are unknown. Therefore, this was examined in the present study. Following an overnight fast and in a randomised, double-blind, counterbalanced design, twelve endurance trained male cyclists performed 90min of exercise at 70% VO2 max 1h after ingesting 6mgkg-1BM of caffeine (CAF) or placebo (PLA). Dimensions of affect and perceived exertion were assessed at regular intervals. During exercise, pleasure ratings were better maintained (F(3,38)=4.99, P<0.05) in the CAF trial compared to the PLA trial with significantly higher ratings at 15, 30 and 75min (all P<0.05). Perceived exertion increased (F(3,28)=19.86, P<0.01) throughout exercise and values, overall, were significantly lower (F(1,11)=9.26, P<0.05) in the CAF trial compared to the PLA trial. Perceived arousal was elevated during exercise but did not differ between trials. Overall, the results suggest that a moderate dose of CAF ingested 1h prior to exercise maintains a more positive subjective experience during prolonged cycling. This observation may partially explain caffeine's ergogenic effects. © 2011 Elsevier Ltd.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Files associated with this item cannot be displayed due to copyright restrictions.
Faculty / Department / School: No Faculty
Date Deposited: 11 May 2017 06:47
Last Modified: 11 May 2017 06:47
Uncontrolled Keywords: Affective states; Caffeine; Ergogenic aids; Exercise; Perceived exertion; Psychopharmacology; Clinical and Experimental Biochemistry; NUTRITION; Dietary effects;
Fields of Research : 11 Medical and Health Sciences > 1111 Nutrition and Dietetics > 111101 Clinical and Sports Nutrition
11 Medical and Health Sciences > 1106 Human Movement and Sports Science > 110602 Exercise Physiology
Socio-Economic Objective: C Society > 92 Health > 9299 Other Health > 929999 Health not elsewhere classified
Identification Number or DOI: 10.1016/j.appet.2011.05.304
URI: http://eprints.usq.edu.au/id/eprint/31866

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