Biology of Sport
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Journal Abstract
Effect of short term caffeine supplementation and intermittent exercise on muscle damage markers
M Machado, JFF Vigo, AC Breder, JR Simões, MC Ximenes, AC Hackney
Biol Sport 2009; 26(1):3-11
ICID: 890168
Article type: Original article
IC™ Value: 9.80
Abstract provided by Publisher
Aim: To evaluate the effect of oral caffeine supplementation and strenuous intermittent exercise on muscle damage markers in soccer players. Materials and Methods: 15 male professional soccer players completed a placebo controlled double blind test protocol. At 45 min before exercise, participants ingested 5.5 mg•kg-1 body mass of caffeine (CAF, n=8) or cellulose (CEL, n=7). The exercise was 2 trials of 6 sets of 10 sprints (20 m each) with 10 s recovery time between sprints, 2 min between sets and 15 min between trials. Blood samples were collected before (PRE), 24, 48 and 72 h after exercise. Serum activity of creatine kinase (CK), lactate dehydrogenase (LDH), aspartate aminotransaminase (AST), and alanine aminotrasaminase (ALT) were quantified. Results: Serum enzyme activity was enhanced by exercise in both groups, without a synergistic effect of caffeine. Conclusion: Our results suggest muscle damage markers increases after physical activities, but caffeine supplementation (5.5 mg•kg-1 body mass) has no influence upon serum enzymes reflective of muscle integrity and damage.

ICID 890168

DOI 10.5604/20831862.890168

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