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Cited by 295

The DOI matches its Crossref record; 14 of the 14 references it cites were found in a registry or an index.

Effect of Caffeine Ingestion on Muscular Strength and Endurance: A Meta-Analysis

WARREN, GORDON L., PARK, NICOLE D., MARESCA, ROBERT D., MCKIBANS, KIMBERLY I., MILLARD-STAFFORD, MELINDA L.·2010·Medicine & Science in Sports & Exercise
DOI 10.1249/mss.0b013e3181cabbd8
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Abstract

PURPOSE: Our objective was to perform a systematic review and meta-analysis of the research literature assessing the effect of caffeine ingestion on maximal voluntary contraction (MVC) strength and muscular endurance. METHODS: Thirty-four relevant studies between 1939 and 2008 were included in the meta-analyses of caffeine's effects on MVC strength (n = 27 studies) and muscular endurance (n = 23 studies). Effect sizes (ES) were calculated as the standardized mean difference and meta-analyses were completed using a random-effects model. RESULTS: Overall, caffeine ingestion was found to result in a small beneficial effect on MVC strength (overall ES = 0.19, P = 0.0003). However, caffeine appears to improve MVC strength primarily in the knee extensors (i.e., by approximately 7%, ES = 0.37) and not in other muscle groups such as the forearm or the knee flexors. In an attempt to offer a physiological mechanism behind caffeine's ability to improve MVC strength, a meta-analysis was run on ES from nine studies that measured percent muscle activation during MVC in trials comparing caffeine versus placebo; the overall ES (0.67) was highly significant (P = 0.00008) and of moderate to large size, thus implicating an effect of caffeine on the CNS. Caffeine ingestion was also found to exert a small beneficial effect on muscular endurance (overall ES = 0.28, P = 0.00005). However, it appears caffeine improves muscular endurance only when it is assessed using open (i.e., by approximately 18%, ES = 0.37) and not fixed end point tests. CONCLUSIONS: Overall, caffeine ingestion improves MVC strength and muscular endurance. The effect on strength appears exclusively in the knee extensors, and the effect on muscular endurance appears only detectable with open end point tests.

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Metadata

Authors
WARREN, G. L., PARK, N. D., MARESCA, R. D., MCKIBANS, K. I., & MILLARD-STAFFORD, M. L.
Venue
Medicine & Science in Sports & Exercise
Publisher
Ovid Technologies (Wolters Kluwer Health)
Published
2010-07
Volume
42
Issue
7
Pages
1375-1387
ISSN
0195-9131 (ISSN-L)
DOI
10.1249/mss.0b013e3181cabbd8
OpenAlex
W2064800875
Cited by
295
References
14
FWCI
6.56
Type
journal article
Language
en
Open access
closed

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