Evidence map›Paper›PMID 39751817›Full record

ArticleEuropean journal of applied physiology2025

Timing is everything: the age-related impact of plyometric training on lower limb explosive strength in male adolescents and its general effectiveness in female adolescents.

Lunxin Chen, Wenhao Qu, Ruixiang Yan, Beiwang Deng, Jian Sun, Yan Wang, Xiaoping Duan, Duanying Li

Abstract read
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In one paragraph

Article in European journal of applied physiology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed, 3 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

6 citing papers in PubMed, 3 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Trial
  5. Article
  6. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors.

Lunxin Chen *School of Physical Education and Sports, Central China Normal University, Wuhan, China.
Wenhao Qu *Digital Physical Training Laboratory, Guangzhou Sport University, Guangzhou, China.
Ruixiang Yan *Digital Physical Training Laboratory, Guangzhou Sport University, Guangzhou, China.
Beiwang DengDigital Physical Training Laboratory, Guangzhou Sport University, Guangzhou, China.
Jian SunSports Training Institute, Guangzhou Sport University, Guangzhou, China.
Yan WangSchool of Physical Education, Guangdong University of Technology, Guangzhou, China. wangyan@gdut.edu.cn.
Xiaoping DuanGuangdong Provincial Institute of Sports Science, Guangzhou, China. duanxpll@163.com.
Duanying LiSports Training Institute, Guangzhou Sport University, Guangzhou, China. liduany@gzsport.edu.cn.ORCID http://orcid.org/0000-0002-2986-0421

Funding

22KJCX013 22KJCX013GD22CTY09 GD22CTY09
6 · The paper itself

Abstract

objectiveThis study investigates the impact of plyometric training on age-related lower limb explosive strength in male adolescents and its effectiveness in female adolescents.

methodsA thorough search was conducted across five databases from their inception until September 20, 2024. Study quality was assessed using the Cochrane Risk Assessment Tool, and data analysis was performed with Stata 15 software.

resultsPlyometric training positively affected countermovement jump (CMJ) (MD = 2.90 cm, 95% CI (2.35, 3.45)), squat jump (SJ) (MD = 2.57 cm, 95% CI (1.69, 3.44)), and 20-m sprint performance (MD = - 0.09 s, 95% CI (- 0.14, - 0.05)). Subgroup analysis revealed varying improvements across age stages. In CMJ, the early adolescence (EA) group (MD = 2.57 cm, 95% CI (1.74, 3.40)), mid-adolescence (MA) group (MD = 3.04 cm, 95% CI (2.30, 3.79)), and post-adolescence (PA) group (MD = 3.89 cm, 95% CI (1.96, 5.81)) showed progressive enhancement. The MA group exhibited superior improvements in SJ (MD = 3.78 cm, 95% CI (2.19, 5.36)) and 20-m sprint (MD = - 0.11 s, 95% CI (- 0.18, - 0.05)) compared to the EA group (SJ: MD = 2.10 cm, 95% CI (1.43, 2.77); sprint: MD = - 0.06 s, 95% CI (- 0.11, - 0.01)). The PA group showed no significant improvements (SJ: MD = 1.31 cm, 95% CI (- 1.05, 3.67); sprint: MD = - 0.27 s, 95% CI (- 0.61, 0.07)). For female adolescents, plyometric training effectively improved CMJ (MD = 2.55 cm, 95% CI (1.43, 3.66)), SJ (MD = 2.33 cm, 95% CI (1.36, 3.31)), and 20-m sprint performance (MD = - 0.22 s, 95% CI (- 0.33, - 0.12)).

conclusionPlyometric training significantly enhances lower limb explosive strength in both male and female adolescents, with age-dependent effects for male adolescents. The greatest improvement in CMJ was observed in the PA stage, followed by the MA stage, while the EA stage showed the least. The MA stage exhibited the best improvements in SJ and sprint performance. TRAIL REGISTRY: The study has been registered in the International Prospective Register of Systematic Reviews (PROSPERO: CRD42023406914).

Indexed as

Athletic PerformanceLower ExtremityMuscle StrengthPlyometric ExerciseAdolescentAge FactorsFemaleHumansMaleAdolescentsAge-relatedLower limb explosive strengthPlyometric training

Identifiers

PMID39751817

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.