The effects of caffeine ingestion on isokinetic muscular strength: A meta-analysis
Grgic J, Pickering C
Journal of science and medicine in sport · 61 citas
Etiquetas de revisión
Financiación no declaradaDatos neutrales que nuestra revisión registró sobre cómo se hizo este estudio. Describen el método, nunca si nos gusta el resultado.
Cómo se estudió
- Diseño
- Metaanálisis (indexado por PubMed)
- Estudiado en
- Personas
- Resultado principal
- Marcadores de salud y funcionamiento
Quién lo pagó
- Financiación
- Financiación no declarada
Publicación
- Publicado
- 2018-08-30 · J Sci Med Sport · vol. 22 · número 3 · págs. 353–360
- Editorial
- Elsevier BV
- Citado
- 87 citas · más que el 86% de estudios similares · 1.9× el promedio de su campo
- Referencias
- 51 trabajos
- Acceso
- Acceso abierto (copia en repositorio) · CC-BY-NC-ND
- Áreas de investigación
- Coffee research and impacts · Sports Performance and Training · Muscle metabolism and nutrition
- Palabras clave
- caffeine, isokinetic strength, muscle strength, knee extensors, angular velocity, acute caffeine ingestion, muscle groups, placebo comparison
- MeSH
- knee, muscle, skeletal, humans, caffeine, muscle strength, randomized controlled trials as topic
2 autores
- Jozo Grgić🇦🇺 · autor de correspondenciaVictoria University
- Craig Pickering🇬🇧University of Lancashire
Resumen
El texto original del estudio, en el idioma en que se publicó.
Objectives
The aims of this paper are threefold: (1) to summarize the research examining the effects of caffeine on isokinetic strength, (2) pool the effects using a meta-analysis, and (3) to explore if there is a muscle group or a velocity specific response to caffeine ingestion.
Design
Meta-analysis.
Methods
PubMed/MEDLINE, Scopus, and SPORTDiscus were searched using relevant terms. The PEDro checklist was used for the assessment of study quality. A random-effects meta-analysis of standardized mean differences (SMDs) was done.
Results
Ten studies of good and excellent methodological quality were included. The SMD for the effects of caffeine on strength was 0.16 (95% CI=0.06, 0.26; p=0.003; +5.3%). The subgroup analysis for knee extensor isokinetic strength showed a significant difference (p=0.004) between the caffeine and placebo conditions with SMD value of 0.19 (95% CI=0.06, 0.32; +6.1%). The subgroup analysis for the effects of caffeine on isokinetic strength of other, smaller muscle groups indicated no significant difference (p=0.092) between the caffeine and placebo conditions. The subgroup analysis for knee extensor isokinetic strength at angular velocities of 60°s-1 and 180°s-1 showed a significant difference between the caffeine and placebo conditions; however, no significant effect (p=0.193) was found at an angular velocity of 30°s-1.
Conclusions
This meta-analysis demonstrates that acute caffeine ingestion caffeine may significantly increase isokinetic strength. Additionally, this meta-analysis reports that the effects of caffeine on isokinetic muscular strength are predominantly manifested in knee extensor muscles and at greater angular velocities.
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