Effects of plyometric jump training on vertical jump height of volleyball players : a systematic review with meta-analysis of randomized-controlled trial

Ramirez-Campillo, R; Andrade, DC; Nikolaidis, PT; Moran, J; Clemente, FM; Chaabene, H; Comfort, P

Abstract

This meta-analysis aimed to assess the effects of plyometric jump training (PJT) on volleyball players' vertical jump height (VJH), comparing changes with those observed in a matched control group. A literature search in the databases of PubMed, MEDLINE, Web of Science, and SCOPUS was conducted. Only randomized-controlled trials and studies that included a pre-to-post intervention assessment of VJH were included. They involved only healthy volleyball players with no restrictions on age or sex. Data were independently extracted from the included studies by two authors. The Physiotherapy Evidence Database scale was used to assess the risk of bias, and methodological quality, of eligible studies included in the review. From 7,081 records, 14 studies were meta-analysed. A moderate Cohen's effect size (ES = 0.82, p <0.001) was observed for VJH, with moderate heterogeneity ( = 34.4%, p = 0.09) and no publication bias (Egger's test, p = 0.59). Analyses of moderator variables revealed no significant differences for PJT program duration (≤8 vs. >8 weeks, ES = 0.79 vs. 0.87, respectively), frequency (≤2 vs. >2 sessions/week, ES = 0.83 vs. 0.78, respectively), total number of sessions (≤16 vs. >16 sessions, ES = 0.73 vs. 0.92, respectively), sex (female vs. male, ES = 1.3 vs. 0.5, respectively), age (≥19 vs. <19 years of age, ES = 0.89 vs. 0.70, respectively), and volume (>2,000 vs. <2,000 jumps, ES = 0.76 vs. 0.79, respectively). In conclusion, PJT appears to be effective in inducing improvements in volleyball players' VJH. Improvements in VJH may be achieved by both male and female volleyball players, in different age groups, with programs of relatively low volume and frequency. Though PJT seems to be safe for volleyball players, it is recommended that an individualized approach, according to player position, is adopted with some players (e.g. libero) less prepared to sustain PJT loads. [Abstract copyright: © Journal of Sports Science and Medicine.]

Citation

Ramirez-Campillo, R., Andrade, D., Nikolaidis, P., Moran, J., Clemente, F., Chaabene, H., & Comfort, P. (2020). Effects of plyometric jump training on vertical jump height of volleyball players : a systematic review with meta-analysis of randomized-controlled trial. Journal of Sports Science and Medicine, 19(3), 489-499

• Journal Article Type: Article
• Acceptance Date: May 12, 2020
• Publication Date: Aug 13, 2020
• Deposit Date: Sep 16, 2020
• Publicly Available Date: Sep 16, 2020
• Journal: Journal of sports science & medicine
• Print ISSN: 1303-2968
• Volume: 19
• Issue: 3
• Pages: 489-499
• Keywords: exercise therapy, human physical conditioning, physical fitness, resistance training, stretch-shortening cycle, team sports
• Publisher URL: https://www.jssm.org/mob/researchjssm-19-489.xml
• Related Public URLs: https://www.jssm.org/mob/index.php
• Additional Information: Additional Information : ** From PubMed via Jisc Publications Router **Journal IDs: eissn 1303-2968 **Article IDs: pii: jssm-19-489; pmc: PMC7429440 **History: accepted 12-05-2020; submitted 07-01-2020; Access Information : This article has been published Open Access. ©Journal of Sports Science and Medicine (2020)