Wei Sun, Hui Li, Luping Qu, Yuehui Zhou, Xiaoyang Cao, Ke Wang, Ke Li
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A meta-analysis was conducted via Review Manager 5.3 software, including heterogeneity tests, effect size pooling, subgroup analysis, and funnel plot construction.</p><p><strong>Results: </strong>A total of eight randomized controlled trials (RCTs) involving 157 participants were included. PT effectively reduced lower limb asymmetry, particularly improving single-leg countermovement jump (SLCMJ) (SMD = 0.51, P = 0.05), single-leg broad jump (SLBJ) (SMD = 0.56, P = 0.01), and single-leg lateral jump (SLLJ) (SMD = 1.24, P = 0.01), but did not affect single-leg horizontal triple jumps (SLH3J) (SMD = 0.24, P = 0.60). In contrast, CT showed no meaningful reduction in asymmetry. Subgroup analysis indicated that unilateral PT alone significantly decreased asymmetry (SMD = 0.71, P < 0.01), whereas bilateral PT (SMD = 0.23, P = 0.45), unilateral CT (SMD = -0.15, P = 0.15) and bilateral CT (SMD = -0.09, P = 0.78) interventions all failed to demonstrate efficacy.</p><p><strong>Conclusion: </strong>Unilateral PT effectively reduces lower limb asymmetry in athletes. Coaches should integrate this method into training programs to address asymmetry-related performance deficits and injury risks. Further high-quality trials are required to validate clinical applicability.</p>","PeriodicalId":12477,"journal":{"name":"Frontiers in Physiology","volume":"16 ","pages":"1551523"},"PeriodicalIF":3.2000,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12014563/pdf/","citationCount":"0","resultStr":"{\"title\":\"Unilateral plyometric training effectively reduces lower limb asymmetry in athletes: a meta-analysis.\",\"authors\":\"Wei Sun, Hui Li, Luping Qu, Yuehui Zhou, Xiaoyang Cao, Ke Wang, Ke Li\",\"doi\":\"10.3389/fphys.2025.1551523\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><strong>Background: </strong>Lower limb asymmetry in athletes is associated with impaired performance and elevated injury risk. Plyometric training (PT) and complex training (CT) are commonly used interventions for this problem, but existing evidence on their effectiveness remains inconsistent.</p><p><strong>Objective: </strong>This meta-analysis aimed to evaluate PT and CT's effects on athletes' lower limb asymmetry. The findings could help optimize training protocols and reduce the risk of sports injuries.</p><p><strong>Methods: </strong>A systematic search of Web of Science, PubMed, ProQuest, Scopus, EBSCO, CNKI, and Wanfang databases was conducted up to March 2024. Two researchers independently performed the literature screening, data extraction, and quality assessment processes. A meta-analysis was conducted via Review Manager 5.3 software, including heterogeneity tests, effect size pooling, subgroup analysis, and funnel plot construction.</p><p><strong>Results: </strong>A total of eight randomized controlled trials (RCTs) involving 157 participants were included. 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引用次数: 0
摘要
背景：运动员下肢不对称与运动能力受损和损伤风险增加有关。增强训练（PT）和复合训练（CT）是常用的干预措施，但现有证据表明其有效性仍不一致。目的：本荟萃分析旨在评价PT和CT对运动员下肢不对称的影响。这一发现有助于优化训练方案，降低运动损伤的风险。方法：系统检索Web of Science、PubMed、ProQuest、Scopus、EBSCO、CNKI、万方等数据库，检索截止至2024年3月。两位研究者独立进行文献筛选、数据提取和质量评估过程。采用Review Manager 5.3软件进行meta分析，包括异质性检验、效应大小池、亚组分析和漏斗图构建。结果：共纳入8项随机对照试验（RCTs），涉及157名受试者。PT能有效降低下肢不对称，特别是改善单腿反动作跳（SLCMJ） （SMD = 0.51, P = 0.05）、单腿跳远（SLBJ） （SMD = 0.56, P = 0.01）和单腿横向跳（SLLJ） （SMD = 1.24, P = 0.01），但对单腿水平三级跳（SLH3J） （SMD = 0.24, P = 0.60）没有影响。相比之下，CT显示不对称性没有明显减少。亚组分析显示，单侧PT可显著降低不对称（SMD = 0.71, P < 0.01），而双侧PT （SMD = 0.23, P = 0.45）、单侧CT （SMD = -0.15, P = 0.15）和双侧CT （SMD = -0.09, P = 0.78）干预均无效。结论：单侧PT可有效降低运动员下肢不对称。教练应该将这种方法整合到训练计划中，以解决与不对称相关的表现缺陷和受伤风险。需要进一步的高质量试验来验证临床适用性。
Unilateral plyometric training effectively reduces lower limb asymmetry in athletes: a meta-analysis.
Background: Lower limb asymmetry in athletes is associated with impaired performance and elevated injury risk. Plyometric training (PT) and complex training (CT) are commonly used interventions for this problem, but existing evidence on their effectiveness remains inconsistent.
Objective: This meta-analysis aimed to evaluate PT and CT's effects on athletes' lower limb asymmetry. The findings could help optimize training protocols and reduce the risk of sports injuries.
Methods: A systematic search of Web of Science, PubMed, ProQuest, Scopus, EBSCO, CNKI, and Wanfang databases was conducted up to March 2024. Two researchers independently performed the literature screening, data extraction, and quality assessment processes. A meta-analysis was conducted via Review Manager 5.3 software, including heterogeneity tests, effect size pooling, subgroup analysis, and funnel plot construction.
Results: A total of eight randomized controlled trials (RCTs) involving 157 participants were included. PT effectively reduced lower limb asymmetry, particularly improving single-leg countermovement jump (SLCMJ) (SMD = 0.51, P = 0.05), single-leg broad jump (SLBJ) (SMD = 0.56, P = 0.01), and single-leg lateral jump (SLLJ) (SMD = 1.24, P = 0.01), but did not affect single-leg horizontal triple jumps (SLH3J) (SMD = 0.24, P = 0.60). In contrast, CT showed no meaningful reduction in asymmetry. Subgroup analysis indicated that unilateral PT alone significantly decreased asymmetry (SMD = 0.71, P < 0.01), whereas bilateral PT (SMD = 0.23, P = 0.45), unilateral CT (SMD = -0.15, P = 0.15) and bilateral CT (SMD = -0.09, P = 0.78) interventions all failed to demonstrate efficacy.
Conclusion: Unilateral PT effectively reduces lower limb asymmetry in athletes. Coaches should integrate this method into training programs to address asymmetry-related performance deficits and injury risks. Further high-quality trials are required to validate clinical applicability.
期刊介绍：
Frontiers in Physiology is a leading journal in its field, publishing rigorously peer-reviewed research on the physiology of living systems, from the subcellular and molecular domains to the intact organism, and its interaction with the environment. Field Chief Editor George E. Billman at the Ohio State University Columbus is supported by an outstanding Editorial Board of international researchers. This multidisciplinary open-access journal is at the forefront of disseminating and communicating scientific knowledge and impactful discoveries to researchers, academics, clinicians and the public worldwide.
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