Caffeine Supplementation and Multiple Sprint Running Performance

Glaister, Mark and Howatson, Glyn and Abraham, Corinne S. and Lockey, Richard A. and Goodwin, Jon E. and Foley, Paul and McInnes, Gill (2008) Caffeine Supplementation and Multiple Sprint Running Performance. Medicine & Science in Sports & Exercise, 40 (10). pp. 1835-1840. ISSN 0195-9131

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Official URL: http://dx.doi.org/10.1249/MSS.0b013e31817a8ad2

Abstract

Purpose: The aim of this study was to examine the effects of caffeine supplementation on multiple sprint running performance. Methods: Using a randomized double-blind research design, 21 physically active men ingested a gelatin capsule containing either caffeine (5 mg·kg-1 body mass) or placebo (maltodextrin) 1 h before completing an indoor multiple sprint running trial (12 × 30 m; repeated at 35-s intervals). Venous blood samples were drawn to evaluate plasma caffeine and primary metabolite concentrations. Sprint times were recorded via twin-beam photocells, and earlobe blood samples were drawn to evaluate pretest and posttest lactate concentrations. Heart rate was monitored continuously throughout the tests, with RPE recorded after every third sprint. Results: Relative to placebo, caffeine supplementation resulted in a 0.06-s (1.4%) reduction in fastest sprint time (95% likely range = 0.04-0.09 s), which corresponded with a 1.2% increase in fatigue (95% likely range = 0.3-2.2%). Caffeine supplementation also resulted in a 3.4-bpm increase in mean heart rate (95% likely range = 0.1-6.6 bpm) and elevations in pretest (+0.7 mmol·L-1; 95% likely range = 0.1-1.3 mmol·L-1) and posttest (+1.8 mmol·L-1; 95% likely range = 0.3-3.2 mmol·L-1) blood lactate concentrations. In contrast, there was no significant effect of caffeine supplementation on RPE. Conclusion: Although the effect of recovery duration on caffeine-induced responses to multiple sprint work requires further investigation, the results of the present study show that caffeine has ergogenic properties with the potential to benefit performance in both single and multiple sprint sports.

Item Type: Journal Article
Uncontrolled Keywords: REF2014
Subjects: 600 Technology > 612 Human physiology
600 Technology > 615 Pharmacology & therapeutics
700 The arts; fine & decorative arts; recreation > 796 Athletic & outdoor sports & games
School/Department: School of Sport, Health and Applied Science
Depositing User: Jonathan Lucas
Date Deposited: 15 May 2012 14:59
Last Modified: 18 May 2012 08:33
URI: http://research.stmarys.ac.uk/id/eprint/111

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