Evidence map›Paper›PMID 36496132›Full record

ArticleJournal of sport and health science2023

Indirect contact matters: Mid-flight external trunk perturbation increased unilateral anterior cruciate ligament loading variables during jump-landings.

Yu Song, Ling Li, Jacob Layer, Raychl Fairbanks, Maddy Jenkins, Gerwyn Hughes, Derek Smith, Margaret Wilson, Qin Zhu, Boyi Dai

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Journal of sport and health science, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed, 1 pooled it
–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

9 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  3. Identifying gait subgroups in low back pain patients with artificial intelligence: implications for individualized interventions.European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society · 2025
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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

10 authors.

Yu SongDivision of Kinesiology and Health, University of Wyoming, Laramie, WY 82071, USA.
Ling LiDivision of Kinesiology and Health, University of Wyoming, Laramie, WY 82071, USA.
Jacob LayerDivision of Kinesiology and Health, University of Wyoming, Laramie, WY 82071, USA.
Raychl FairbanksDivision of Kinesiology and Health, University of Wyoming, Laramie, WY 82071, USA.
Maddy JenkinsDivision of Kinesiology and Health, University of Wyoming, Laramie, WY 82071, USA.
Gerwyn HughesDepartment of Kinesiology, University of San Francisco, San Francisco, CA 94117, USA.
Derek SmithDivision of Kinesiology and Health, University of Wyoming, Laramie, WY 82071, USA.
Margaret WilsonDepartment of Theatre and Dance, University of Wyoming, Laramie, WY 82071, USA.
Qin ZhuDivision of Kinesiology and Health, University of Wyoming, Laramie, WY 82071, USA.
Boyi DaiDivision of Kinesiology and Health, University of Wyoming, Laramie, WY 82071, USA. Electronic address: bdai@uwyo.edu.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo determine the effect of unanticipated mid-flight medial-lateral external perturbation of the upper or lower trunk on anterior cruciate ligament (ACL) loading variables during jump-landings.

methodsThirty-two participants performed double-leg vertical jump-landings while bilateral kinematics and kinetics were collected under 6 conditions (upper or lower trunk perturbation locations; no, left, or right perturbation directions). Two customized catapult apparatuses were created to apply pushing perturbation to participants near the maximal jump height.

resultsThe ball contacted participants near the center of mass for the lower-trunk conditions and approximately 23 cm above the center of mass for the upper-trunk conditions. Under upper-trunk perturbation, the contralateral leg demonstrated significantly smaller knee flexion angles at initial contact and greater peak knee abduction angles, peak vertical ground reaction forces, peak knee extension moments, and peak knee adduction moments compared to other legs among all conditions. Under lower-trunk perturbation, the contralateral leg showed significantly smaller knee flexion angles at initial contact and increased peak vertical ground reaction forces and peak knee extension moments compared to legs in the no-perturbation conditions.

conclusionMid-flight external trunk pushing perturbation increased ACL loading variables for the leg contralateral to the perturbation. The upper-trunk perturbation resulted in greater changes in ACL loading variables compared to the lower-trunk perturbation, likely due to trunk and ipsilateral leg rotation and more laterally located center of mass relative to the contralateral leg. These findings may help us understand the mechanisms of indirect-contact ACL injuries and develop jump-landing training strategies under mid-flight trunk perturbation to better prevent ACL injury.

Indexed as

Anterior Cruciate LigamentAnterior Cruciate Ligament InjuriesBiomechanical PhenomenaHumansKneeKnee JointLower ExtremityACL injuriesBiomechanicsKinematicsKineticsLanding

Identifiers

PMID36496132
PMCPMC10362484

What OpenQuestion holds

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LicenceCC BY-NC-ND
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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.