Establishing a relationship between the effect of caffeine and duration of endurance athletic time trial events: A systematic review and meta-analysis
Shen JG, Brooks MB, Cincotta J, Manjourides JD
Journal of science and medicine in sport · 45 citas
Cómo se estudió
- Diseño
- Metaanálisis (indexado por PubMed)
- Estudiado en
- Personas
- Resultado principal
- Marcadores de salud y funcionamiento
Quién lo pagó
- Financiación
- Financiación independiente
- Universidad u hospital
- Harvard University
Según 1 financiador declarado.
Publicación
- Publicado
- 2018-08-20 · J Sci Med Sport · vol. 22 · número 2 · págs. 232–238
- Editorial
- Elsevier BV
- Citado
- 75 citas · más que el 77% de estudios similares · 1.2× el promedio de su campo
- Referencias
- 63 trabajos
- Acceso
- De pago
- Áreas de investigación
- Coffee research and impacts · Sports Performance and Training · Thermoregulation and physiological responses
- Palabras clave
- caffeine, endurance performance, ergogenic aids, effect size, endurance athletes, subjective fatigue
- MeSH
- humans, caffeine, central nervous system stimulants, physical endurance, randomized controlled trials as topic, athletic performance, athletes, performance-enhancing substances
4 autores
- Joy G. Shen · autor de correspondencia
- Meredith B. Brooks🇺🇸Northeastern University; Harvard University
- Jessica Cincotta🇺🇸Northeastern University
- Justin Manjourides🇺🇸Northeastern University
Resumen
El texto original del estudio, en el idioma en que se publicó.
Objectives
Caffeine has well-documented benefits on endurance athletic performance. Because of caffeine's ergogenic effects of reducing perceived fatigue, it is hypothesized that as duration of athletic event increases, so will the effect size of caffeine upon performance. This study aims to examine the relationship between duration of endurance athletic event and the effect size of caffeine compared to placebo for athletic performance.
Design
A systematic review and meta-analysis of placebo-controlled trials assessing the effects of caffeine in adults performing endurance athletic events.
Methods
We searched MedLine, Web of Science, and review article references published through March 2016. We performed meta-analyses on placebo-controlled trials to determine the effect of the duration of an endurance athletic event on the standardized mean difference (Cohen's d) between the caffeine and placebo groups for athletic performance.
Results
Forty articles including 56 unique comparison groups were included. Pooled results showed a Cohen's d of 0.33 (95% CI=0.21, 0.45; p=1.00; I2=0%). The effect of the duration of athletic event was significantly associated with Cohen's d (Relative Risk: 0.005; 95% CI=0.001, 0.009; p=0.024). For a 30min increase in duration of the athletic event, Cohen's d will increase by 0.150.
Conclusions
This study is the first to report on the statistical finding that the effect size of caffeine increases along with the increasing duration of the time trial event. Endurance athletes may especially benefit from caffeine for performance enhancement.
Resumen vía Europe PMC. Los derechos de autor siguen siendo de los autores o la editorial.
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