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Effects of repeated-sprint training in hypoxia on Sea-Level performance: A Meta-Analysis

Brocherie, F., Girard, O., Faiss, R. and Millet, G.P. (2017) Effects of repeated-sprint training in hypoxia on Sea-Level performance: A Meta-Analysis. Sports Medicine, 47 (8). pp. 1651-1660.

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Repeated-sprint training in hypoxia (RSH) is a recent intervention regarding which numerous studies have reported effects on sea-level physical performance outcomes that are debated. No previous study has performed a meta-analysis of the effects of RSH.

We systematically reviewed the literature and meta-analyzed the effects of RSH versus repeated-sprint training in normoxia (RSN) on key components of sea-level physical performance, i.e., best and mean (all sprint) performance during repeated-sprint exercise and aerobic capacity (i.e., maximal oxygen uptake [V˙O2max]).

The PubMed/MEDLINE, SportDiscus®, ProQuest, and Web of Science online databases were searched for original articles—published up to July 2016—assessing changes in physical performance following RSH and RSN. The meta-analysis was conducted to determine the standardized mean difference (SMD) between the effects of RSH and RSN on sea-level performance outcomes.

After systematic review, nine controlled studies were selected, including a total of 202 individuals (mean age 22.6 ± 6.1 years; 180 males). After data pooling, mean performance during repeated sprints (SMD = 0.46, 95% confidence interval [CI] −0.02 to 0.93; P = 0.05) was further enhanced with RSH when compared with RSN. Although non-significant, additional benefits were also observed for best repeated-sprint performance (SMD = 0.31, 95% CI −0.03 to 0.89; P = 0.30) and V˙O2maxv(SMD = 0.18, 95% CI −0.25 to 0.61; P = 0.41).

Based on current scientific literature, RSH induces greater improvement for mean repeated-sprint performance during sea-level repeated sprinting than RSN. The additional benefit observed for best repeated-sprint performance and V˙O2max
for RSH versus RSN was not significantly different.

Item Type: Journal Article
Publisher: Springer
Copyright: © 2017 Springer International Publishing Switzerland
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