Effect of caffeine ingestion on time trial performance in cyclists: a systematic review and meta-analysis
Chen B, Ding L, Qin Q, Lei TH, Girard O, Cao Y
Journal of the International Society of Sports Nutrition · 37 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
- Shanghai University of Sport
- Subvenciones
- Shanghai University of Sport (11DZ2261100); Shanghai University of Sport (2022XJ020)
Según 1 financiador declarado y la declaración de financiación del texto completo.
Publicación
- Publicado
- 2024-06-05 · J Int Soc Sports Nutr · vol. 21 · número 1 · pág. 2363789
- Editorial
- Springer Science+Business Media
- Citado
- 38 citas · más que el 94% de estudios similares · 3.8× el promedio de su campo
- Impacto
- Entre el 10 % más citado de su campo
- Referencias
- 63 trabajos
- Acceso
- Acceso abierto (revista) · CC-BY-NC
- Áreas de investigación
- Coffee research and impacts · Sports Performance and Training · Thermoregulation and physiological responses
- Palabras clave
- caffeine, time trial performance, cyclists, ergogenic aids, caffeine dosage, average output power, cycling performance, endurance performance
- MeSH
- humans, caffeine, physical endurance, dose-response relationship, drug, bicycling, athletic performance, performance-enhancing substances
6 autores
- Bin Chen🇨🇳Fujian Agriculture and Forestry University
- Li Ding🇨🇳Shanghai University of Sport
- Qiyang Qin🇨🇳Shanghai University of Sport
- Tze‐Huan Lei🇨🇳Hubei Normal University
- Olivier Girard🇦🇺The University of Western Australia
- Yinhang Cao🇨🇳 · autor de correspondenciaShanghai University of Sport
Resumen
El texto original del estudio, en el idioma en que se publicó.
Background
Caffeine, widely recognized as an ergogenic aid, has undergone extensive research, demonstrating its effectiveness to enhance endurance performance. However, there remains a significant gap in systematically evaluating its effects on time trial (TT) performance in cyclists.
Purpose
This meta-analysis aimed to determine the efficacy of caffeine ingestion to increase cycling TT performance in cyclists and to evaluate the optimal dosage range for maximum effect.
Methods
A search of four databases was completed on 1 December 2023. The selected studies comprised crossover, placebo-controlled investigations into the effects of caffeine ingestion on cycling TT performance. Completion time (Time) and mean power output (MPO) were used as performance measures for TT. Meta-analyses were performed using a random-effects model to assess the standardized mean differences (SMD) in individual studies.
Results
Fifteen studies met the inclusion criteria for the meta-analyses. Subgroup analysis showed that moderate doses of caffeine intake (4-6 mg/kg) significantly improved cycling performance (SMD Time = -0.55, 95% confidence interval (CI) = -0.84 ~ -0.26, p I2 = 35%; SMD MPO = 0.44, 95% CI = 0.09 ~ 0.79, p I2 = 39%), while the effects of low doses (1-3 mg/kg) of caffeine were not significant (SMD Time = -0.34, 95% CI = -0.84 ~ 0.17, p = 0.19, I2 = 0%; SMD MPO = 0.31, 95% CI = -0.02 ~ 0.65, p = 0.07, I2 = 0%).
Conclusion
A moderate dosage (4-6 mg/kg) of caffeine, identified as the optimal dose range, can significantly improve the time trial performance of cyclists, while a low dose (1-3 mg/kg) does not yield improvement. In addition, the improvements in completion time and mean power output resulting from a moderate dose of caffeine are essentially the same in cycling time trails.
Resumen vía Europe PMC. Los derechos de autor siguen siendo de los autores o la editorial (CC BY-NC).
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