Evidence map›Paper›PMID 40981042›Full record

ArticleJournal of functional morphology and kinesiology2025

Acute Effects of Isometric Contraction Distribution on Jump Performance in Volleyball Players.

Jonatan Helbin, Dawid Gawel, Artur Terbalyan, Michal Wilk, Michal Krzysztofik, Danny Lum, Jakub Jarosz

4 registry-linked trialsAbstract read
In one paragraph

Article in Journal of functional morphology and kinesiology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 4 registered trials, which are not on this map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing 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.

NCT07482254 nacompletednot on this mapstarted 2026, after this paper: background citation

Acute Effects of Unilateral Isometric Conditioning Activity on Sprinting Speed, Jump Performance, Change of Direction Ability and Neuromuscular Function in Elite Youth Soccer Players (U15-U19)

TypeinterventionalSponsorThe Jerzy Kukuczka Academy of Physical Education in KatowiceRan2026 to 2026Enrolled13ConditionsAthletic Performance, Soccer, Isometric Strength TrainingArmsIsometric Conditioning Activity, Control Condition
NCT07483931 nacompletednot on this mapstarted 2026, after this paper: background citation

Priming Magnitude and Retention in Highly Trained Male Volleyball Players Are Unaffected by Exercise Type, Muscle Temperature, or Viscoelasticity

TypeinterventionalSponsorThe Jerzy Kukuczka Academy of Physical Education in KatowiceRan2026 to 2026Enrolled14ConditionsAthletic PerformanceArmsIsometric Conditioning Activity (ICA), Volleyball-Specific Warm-Up (Control Condition)
NCT07556315 nacompletednot on this map

Effects of Unilateral and Bilateral Isometric Strength Training Integrated Into an 8-Week Complex Training Program on Neuromuscular Performance in Youth Soccer Players

TypeinterventionalSponsorThe Jerzy Kukuczka Academy of Physical Education in KatowiceRan2025 to 2025Enrolled41ConditionsAthletic Performance, Soccer, Resistance TrainingArmsUnilateral Isometric Training, Bilateral Isometric Training, Complex Strength Training
NCT07709104 naenrolling by invitationnot on this mapstarted 2026, after this paper: background citation

Acute Effects of Bilateral Versus Unilateral Isometric Conditioning Activity on Bilateral and Unilateral Jump Performance in Highly Trained Male Volleyball Players: A Randomized Crossover Trial

TypeinterventionalSponsorThe Jerzy Kukuczka Academy of Physical Education in KatowiceRan2026 to 2026Enrolled14ConditionsAthletic Performance, Volleyball, Isometric Strength Training, Post Activation PotentiationArmsBilateral Isometric Conditioning Activity, Unilateral Isometric Conditioning Activity, Low-Intensity Treadmill Walking
3 · Its place in the literature

Who cites it

3 citing papers in PubMed.

  1. Trial
  2. Article
  3. 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

7 authors.

Jonatan HelbinInstitute of Sport Sciences, Academy of Physical Education, 40-065 Katowice, Poland.
Dawid GawelInstitute of Sport Sciences, Academy of Physical Education, 40-065 Katowice, Poland.ORCID 0000-0001-5884-9478
Artur TerbalyanInstitute of Sport Sciences, Academy of Physical Education, 40-065 Katowice, Poland.ORCID 0000-0002-3628-8849
Michal WilkInstitute of Sport Sciences, Academy of Physical Education, 40-065 Katowice, Poland.ORCID 0000-0001-5799-6337
Michal KrzysztofikInstitute of Sport Sciences, Academy of Physical Education, 40-065 Katowice, Poland.ORCID 0000-0003-2797-8431
Danny LumHigh Performance Sport Science and Sport Medicine, High Performance Sport Institute, Singapore 397630, Singapore.ORCID 0000-0002-8908-3791
Jakub JaroszInstitute of Sport Sciences, Academy of Physical Education, 40-065 Katowice, Poland.ORCID 0000-0002-6506-8263

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

PubMed holds no abstract for this paper.

Indexed as

isometric squatpost-activation performance enhancementsports performancevertical jump

Identifiers

PMID40981042
PMCPMC12452611

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

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.