| Full text | |
| Author(s): |
Lopes-Silva, Joao P.
[1, 2, 3]
;
Choo, Hui C.
[4]
;
Franchini, Emerson
[5, 2]
;
Abbiss, Chris R.
[4]
Total Authors: 4
|
| Affiliation: | [1] UNINASSAU, Maceio, Alagoas - Brazil
[2] Univ Sao Paulo, High Intens Intermittent Exercise Physiol Res Grp, Sch Phys & Educ & Sport, Sao Paulo - Brazil
[3] Cesmac Univ Ctr, Sch Phys Educ, Rua Prof Angelo Neto 51, BR-57051530 Maceio, Alagoas - Brazil
[4] Edith Cowan Univ, CESSR, Sch Med & Hlth Sci, 270 Joondalup Dr, Joondalup, WA 6027 - Australia
[5] Australian Inst Sport, Canberra, ACT - Australia
Total Affiliations: 5
|
| Document type: | Review article |
| Source: | JOURNAL OF SCIENCE AND MEDICINE IN SPORT; v. 22, n. 8, p. 962-972, AUG 2019. |
| Web of Science Citations: | 0 |
| Abstract | |
Objectives: This study is a systematic review and meta-analysis aimed at investigating the isolated effects of caffeine and sodium bicarbonate (NaHCO3) ingestion on repeated sprint ability (RSA). Methods: Following a search through PubMed and Scopus, 13 studies (7 with caffeine and 6 with NaHCO3) were found to meet inclusion criteria. Random-effects of standardized mean difference (SMD) for total work and best sprint performance was examined. Study quality was assessed using QualSyst. Results: The meta-analysis indicated that caffeine ingestion did not improve the total work done (weighted average effect size Hedges's g= -0.01, 95%CI: -0.32 to 0.31, p = 0.97), best sprint (weighted average effect size Hedges's g= -0.02, 95% CI: -0.32 to 0.27; p = 0.87) or last sprint performance (weighed average effect size Hedge's g = -0.27, 95%CI: -0.68 to 0.14; p = 0.20), when compared with a placebo condition. Similarly, NaHCO3 ingestion did not improve the total work done (weighted average effect size Hedges's g=0.43, 95% CI: -0.11 to 0.97, p=0.12), best sprint (weighted average effect size Hedges's g=0.02, 95% CI -0.30 to 0.34; p =0.90) or last sprint performance (weighted average effect size Hedge's g = 0.20, 95%CI: -0.13 to 0.52, p = 0.14), compared with a placebo condition. Quality assessment of selected articles was classified as strong. Conclusion: This meta-analysis provides evidence that repeated sprint ability is not affected by acute ingestion of caffeine or NaHCO3. (C) 2019 Sports Medicine Australia. Published by Elsevier Ltd. All rights reserved. (AU) | |
| FAPESP's process: | 17/08167-2 - Pacing in judo |
| Grantee: | Emerson Franchini |
| Support Opportunities: | Scholarships abroad - Research |