Meta-analysis of the intermittent time of post-activation potentiation enhancement on sprint ability

摘要

INTRODUCTION: In sports, 10 m, 30 m and 40m events are used to test the athlete's acceleration ability, which depends on the coordination of physiological and neural function and can be greatly improved through scientific training.EVIDENCE ACQUISITION: This study conducted a systematic meta-analysis on the intermittent time of post-activation potentiation enhance-ment (PAPE) and the outcome measure was the sprint ability in 10 m and 30 m events. Data sources: Web of Science, PubMed, ProQuest, Embase, Science Direct, Google Scholar, WanFang Data and CNKI. Study eligibility criteria: to qualify for inclusion in meta-analysis, the study must be: 1) healthy people (athletes, students); 2) randomized controlled trials; 3) Barbell squat was used to induce PAPE; 4) intervention period of at least 6 weeks; and 5) an outcome indicator of sprinting ability.EVIDENCE SYNTHESIS: We used the inverse-variance random-effects model for meta-analyses. Effect sizes (standardized mean difference), calculated from measures of horizontally orientated performance, were represented by the standardized mean difference and presented alongside 95% confidence intervals (CI). A total of 9 studies including 141 participants, met the inclusion criteria. The sprint ability in 10 meters (ES= -0.03, P<0.0001) and 30 meters events (ES=-0.03, P=0.004) could be significantly improved when the intermittent time of PAPE was 4-8 min. When the intensity of the squat load was 85%1RM-100%1RM, compared with the intermittent time of 0-3min, 9-12min, and more than 13min, the sprint ability in 10 meters (ES=-0.04, P<0.0001) and 30 meters events (ES=-0.08, P=0.0001) was incredibly enhanced if the intermittent time was 4-8 minutes. Compared with college students, the sprint ability in 10-meter (ES=-0.03, P<0.0001) and 30-meter (ES=-0.04, P=0.001) events was significantly improved in athletes when the intermittent time of PAPE was 4-8 minutes. Compared with non-ball games, the sprint ability in 10 meters (ES=-0.04, P<0.0001) and 30 meters (ES=-0.09, P=0.0002) in ball games was significantly improved when the intermittent time of PAPE was 4-8 minutes.CONCLUSIONS: Our meta-analysis indicated that when squats were used as the induction and the load intensity was 85% 1RM-100% 1RM, the sprint ability in 10-meter and 30-meter events could be significantly improved if the intermittent time was 4-8min. According to the analysis on different population, compared with college students and non-ball games, the 10-meter and 30-meter the sprint ability were significantly improved in athletes and ball games when the intermittent time was 4-8 minutes. Therefore, future research should focus on developing a reason-able combination of load stimulation and intermittent time according to the sprint ability to better induce PAPE.