Evidence map›Paper›PMID 38040837›Full record

SynthesisScientific reports2023

Maximizing plyometric training for adolescents: a meta-analysis of ground contact frequency and overall intervention time on jumping ability: a systematic review and meta-analysis.

Lunxin Chen, Zijing Huang, Lin Xie, Jiaxin He, Hongshen Ji, Weifeng Huang, Duanying Li, Yanfeng Zhou, Jian Sun

Open access · goldAbstract readMeta-AnalysisSystematic Review
PubMed Full text at PMC Publisher
In one paragraph

Synthesis in Scientific reports, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 6 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 6 pooled it
4.2field-weighted citation impact, top 5% of its field
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

17 citing papers in PubMed, 6 syntheses or guidelines pooled it, 17 citations in OpenAlex.

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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

9 authors at 1 institution in 1 country.

Lunxin Chen *Digitalized Strength and Conditioning Training Laboratory, Guangzhou Sport University, Guangzhou, China.
Zijing Huang *Digitalized Strength and Conditioning Training Laboratory, Guangzhou Sport University, Guangzhou, China.
Lin XieDigitalized Strength and Conditioning Training Laboratory, Guangzhou Sport University, Guangzhou, China.
Jiaxin HeSchool of Athletic Training, Guangzhou Sport University, Guangzhou, China.
Hongshen JiSchool of Athletic Training, Guangzhou Sport University, Guangzhou, China.
Weifeng HuangSchool of Athletic Training, Guangzhou Sport University, Guangzhou, China.
Duanying LiSchool of Athletic Training, Guangzhou Sport University, Guangzhou, China. liduany@gzsport.edu.cn.
Yanfeng ZhouSchool of Athletic Training, Guangzhou Sport University, Guangzhou, China. GZTYzhouyanfeng@163.com.
Jian SunSchool of Athletic Training, Guangzhou Sport University, Guangzhou, China. sunjian@gzsport.edu.cn.
Guangzhou Sport University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Plyometric training boosts adolescents' jumping ability, crucial for athletic success and health. However, the best total ground contact frequency (TGCF) and overall intervention time (OIT) for these exercises remain unclear. This meta-analysis aims to identify optimal TGCF and OIT in plyometric training for adolescents, focusing on countermovement jump (CMJ) and squat jump (SJ) outcomes. This systematic review encompassed five databases and included 38 studies with 50 randomized controlled experiments and 3347 participants. We used the Cochrane risk assessment tool for study quality and Review Manager 5.4 for data analysis. The current meta-analysis incorporated a total of 38 studies, comprising 50 sets of randomized controlled trials, to investigate the influence of different TGCFs and OITs on plyometric training. The Cochrane risk assessment tool indicated that all the included studies were classified as low risk. Various TGCFs in plyometric training positively affected CMJ and SJ heights in adolescents. The TGCF of less than 900 was ideal for enhancing CMJ, whereas more than 1400 was effective for SJ. The optimal OIT was 400-600 min, specifically, 500-600 min for CMJ and 400-500 min for SJ. Plyometric training improves jumping ability in adolescents. Lower ground contact frequency (< 900 contacts) enhances CMJ, while higher ground contact frequency (> 1400 contacts) is more effective for SJ. Optimal intervention time ranges from 400 to 600 min, with 500 to 600 min benefiting CMJ and 400 to 500 min improving SJ.

Indexed as

Athletic PerformancePlyometric ExerciseAdolescentExerciseHumansMuscle StrengthPosture

Identifiers

PMID38040837
PMCPMC10692103
OpenAlexW4389221304

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.