| Minimal Effect of Acute Caffeine Ingestion on Intense Resistance Training Performance. | |
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MedLine Citation:
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PMID: 21399540 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Astorino, TA, Martin, BJ, Schachtsiek, L, Wong, K, and Ng, K. Minimal effect of acute caffeine ingestion on intense resistance training performance. J Strength Cond Res 25(X): 000-000, 2011-The primary aim of the study was to determine the efficacy of acute caffeine intake to enhance intense resistance training performance. Fourteen resistance-trained men (age and body mass = 23.1 ± 1.1 years and 83.4 ± 13.2 kg, respectively) who regularly consumed caffeine ingested caffeine (6 mg·kg) or placebo 1 hour before completion of 4 sets of barbell bench press, leg press, bilateral row, and barbell shoulder press to fatigue at 70-80% 1-repetition maximum. Two minutes of rest was allotted between sets. Saliva samples were obtained to assess caffeine concentration. The number of repetitions completed per set and total weight lifted were recorded as indices of performance. Two-way analysis of variance with repeated measures was used to examine differences in performance across treatment and sets. Compared to placebo, there was a small but significant effect (p < 0.05) of acute caffeine intake on repetitions completed for the leg press but not for upper-body exercise (p > 0.05). Total weight lifted across sets was similar (p > 0.05) with caffeine (22,409.5 ± 3,773.2 kg) vs. placebo (21,185.7 ± 4,655.4 kg), yet there were 9 'responders' to caffeine, represented by a meaningful increase in total weight lifted with caffeine vs. placebo. Any ergogenic effect of caffeine on performance of fatiguing, total-body resistance training appears to be of limited practical significance. Additional research is merited to elucidate interindividual differences in caffeine-mediated improvements in performance. |
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Authors:
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Todd A Astorino; Brian J Martin; Lena Schachtsiek; Keau Wong; Karno Ng |
Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-3-09 |
Journal Detail:
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Title: Journal of strength and conditioning research / National Strength & Conditioning Association Volume: - ISSN: 1533-4287 ISO Abbreviation: - Publication Date: 2011 Mar |
Date Detail:
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Created Date: 2011-3-14 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9415084 Medline TA: J Strength Cond Res Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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1Department of Kinesiology, California State University, San Marcos, California; 2Department of Kinesiology, California State University-Fullerton, California; and 3Department of Chemistry, California State University, San Marcos, California. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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