Evidence map›Paper›PMID 42157573›Full record

SynthesisEuropean journal of sport science2026

From Populations to Programming Variables: Post-Activation Performance Enhancement Following Isometric Contractions on Muscular Strength and Power-A Systematic Review and Meta-Analysis.

Zhijian He, Zhipeng Xue, Lijun Qiang, Zepeng Lu, Qiushi Wang, Ruinan Zhang, Yilin Xu, Ji Tu, Dapeng Bao, Junhong Zhou

Abstract readSystematic ReviewMeta-Analysis
In one paragraph

Synthesis in European journal of sport science, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
–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

2 citing papers in PubMed.

  1. Article
  2. Article
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

10 authors.

Zhijian HeDepartment of Sports Teaching and Research, Lanzhou University, Lanzhou, China.ORCID https://orcid.org/0000-0002-2613-2357
Zhipeng XueChina Institute of Sport and Health Science, Beijing Sport University, Beijing, China.
Lijun QiangNingxia Vocational College of Sports, Ningxia, China.
Zepeng LuSports Coaching College, Beijing Sport University, Beijing, China.
Qiushi WangSports Coaching College, Beijing Sport University, Beijing, China.ORCID https://orcid.org/0009-0009-3891-9876
Ruinan ZhangChina Institute of Sport and Health Science, Beijing Sport University, Beijing, China.
Yilin XuChina Basketball College, Beijing Sport University, Beijing, China.
Ji TuInstitute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College, Beijing, China.
Dapeng BaoChina Institute of Sport and Health Science, Beijing Sport University, Beijing, China.
Junhong ZhouHebrew SeniorLife Hinda and Arthur Marcus Institute for Aging Research, Harvard Medical School, Boston, Massachusetts, USA.ORCID https://orcid.org/0000-0002-7931-7646

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Isometric contraction (ISO) has emerged as a potentially effective conditioning activity (CA) for inducing post-activation performance enhancement (PAPE). However, findings regarding its effects on subsequent muscular strength and power remain inconsistent, and the participant- and protocol-related characteristics associated with more favorable responses remain unclear. This systematic-review and meta-analysis aimed to evaluate the acute effects of ISO on subsequent muscular strength and power, compared ISO with control (CON) and dynamic isotonic contraction (DYN) conditions, and explore characteristics associated with more favorable PAPE. Twenty-five studies involving 782 participants were included. A three-level meta-analysis was used to account for dependent effect sizes, complemented by moderator analyses and meta-regression. For vertical jump height, ISO showed a significantly greater effect than CON (ES = 0.349, p < 0.01), whereas no significant difference was detected between ISO and DYN; a significant pre-post improvement was observed within the ISO group (ES = 0.180, p < 0.01). No significant within-ISO effect was observed for power output, and no significant effect was observed for muscular strength in either the within-ISO or ISO versus CON comparison. Moderator and meta-regression analyses suggested that some participant- and protocol-related conditions were associated with larger subgroup-specific effects on the vertical jump height, particularly 8-12 s contraction duration, 6-10 volume units, and 4-8 min of rest, although between-level differences were generally inconsistent. ISO appears effective for eliciting PAPE in vertical jump height, whereas current evidence for muscular strength and power remains limited. PROTOCOL REGISTRATION: The original protocol for the review was prospectively registered on PROSPERO (CRD42024608192).

Indexed as

Athletic PerformanceIsometric ContractionMuscle StrengthPhysical Conditioning, HumanHumansIsotonic ContractionMuscle, Skeletalholding isometric muscle actionisometric squatpushing isometric muscle actionrest intervalvertical jump

Identifiers

PMID42157573
PMCPMC13580768

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.