Evidence map›Paper›PMID 40837508›Full record

ArticleJournal of human kinetics2025

Analysis of Lower Limb Asymmetry in Drop Jumps from Different Heights.

I-Lin Wang, Chien-Ting Lai, Yu Su, Chin-Yi Gu

Abstract read
In one paragraph

Article in Journal of human kinetics, 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. 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

4 authors.

I-Lin WangCollege of Physical Education, Hubei Normal University, Huangshi, China.ORCID https://orcid.org/0000-0002-6234-3768
Chien-Ting LaiGraduate Institute of Sport Coaching Science, Chinese Culture University, Taipei City, Taiwan.ORCID https://orcid.org/0000-0001-9350-8361
Yu SuDepartment of Rehabilitation Medicine, Hebei General Hospital, Shijiazhuang, Hebei, China.ORCID https://orcid.org/0009-0004-4975-6797
Chin-Yi GuDepartment of Physical Education and Kinesiology, National Dong Hwa University, Shoufeng, Taiwan.ORCID https://orcid.org/0000-0002-1203-7850

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

This study aimed to investigate the effects of lower limb muscular asymmetry on the bilateral variations observed in high platform drop jumps, with a particular emphasis on the side-to-side differences in both the initial and secondary ground contacts during these jumps. Seventy-one students from the Physical Education department were selected to perform countermovement jumps. Participants were further classified into two groups, strength symmetry and strength asymmetry groups, based on the asymmetry strength index calculated from data collected via the force plates. Drop jumps were performed from three designated heights, i.e., 30 cm, 40 cm and 50 cm (DJ30, DJ40 and DJ50, respectively). The mixed design two-way ANOVA revealed notable differences between the stronger and weaker legs. Significant differences were observed in the timing of the peak vertical ground reaction force at the first ground contact of the DJ30 (p < 0.05) and in the shape factor of the push-off phase of the DJ40 (p < 0.05). The unilateral preference might lead to an increased risk of lower limb injuries. Prolonged training may exacerbate the degree of lower limb asymmetry. Potentially these findings can provide valuable suggestions for athletes and coaches in their training.

Indexed as

impulselanding phaseshape factorside-to-side differences

Identifiers

PMID40837508
PMCPMC12360929

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.