Evidence map›Paper›PMID 41387512›Full record

ArticleScientific reports2025

Biomechanical improvements in performance and injury prevention in volleyball spikes: effects of a 4-week training program.

Sungmin Kim, Dohoon Koo, Jeheon Moon

Abstract read
In one paragraph

Article in Scientific reports, 2025. 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. Review
  2. 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

3 authors.

Sungmin KimInstitute of School Physical Education, Korea National University of Education, Cheongju, Chungbuk, Republic of Korea.
Dohoon KooDepartment of Exercise Prescription, Jeonju University, Jeonju, Jeonbuk, Republic of Korea. dohoonkoo@jj.ac.kr.
Jeheon MoonDepartment of Physical Education, Korea National University of Education, Cheongju, Chungbuk, Republic of Korea. jhmoon@knue.ac.kr.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

This study aimed to develop a 4-week volleyball-specific training program for the unique movement requirements of volleyball to enhance performance and reduce injury risk among adult players. Sixteen male participants were college players with at least 10 years of volleyball experience (ages: 18-22 years). Participants performed spikes in pre- and post-test, starting with a 5 m run-up from the left side of the net to a force platform. They underwent a four-week training program aimed at improving spike performance. The analyzed variables included the center of mass (COM), joint angles, angular velocities, moments, ground reaction forces (GRF), and forces in the three planes of the knee joint. For statistical analysis, paired t-tests and statistical parametric mapping (SPM) were employed to evaluate pre- and post-test differences in the measured variables (α = .05). During the jumping phase, knee extension angular velocity and peak vertical GRF increased after training (p < .05), and SPM analysis revealed a higher knee flexion moment between 40 and 80% of the phase post-test (p < .001). In the airborne phase, the center of mass (COM) reached a greater height after the training program (p < .05). During the landing phase, the minimum COM height decreased post-test (p < .05), while flexion angular velocity increased (p < .05). In addition, the extension moment and vertical joint forces of the knee were reduced (p < .05), and vertical GRF remained consistently high at 35% of the landing phase (p < .001). The four-week specific training program effectively enhanced jump performance and reduced knee joint load, promoting both improved performance and safer landing mechanics.

Indexed as

Athletic InjuriesAthletic PerformanceVolleyballAdolescentAdultBiomechanical PhenomenaHumansKnee JointMaleYoung AdultAthlete trainingJump and landing performanceKnee joint loadSPM

Identifiers

PMID41387512
PMCPMC12804966

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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.