Effect of caffeine ingestion on time trial performance in cyclists: a systematic review and meta-analysis
| Autor: | Bin Chen, Li Ding, Qiyang Qin, Tze-Huan Lei, Olivier Girard, Yinhang Cao |
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| Jazyk: | angličtina |
| Rok vydání: | 2024 |
| Předmět: | |
| Zdroj: | Journal of the International Society of Sports Nutrition, Vol 21, Iss 1 (2024) |
| Druh dokumentu: | article |
| ISSN: | 15502783 1550-2783 |
| DOI: | 10.1080/15502783.2024.2363789 |
| Popis: | 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 |
| Databáze: | Directory of Open Access Journals |
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