Evidence map›Paper›PMID 34778472›Full record

ArticleOrthopaedic journal of sports medicine2021

Sex-Based Differences in the Drop Vertical Jump as Revealed by Video Motion Capture Analysis Using Artificial Intelligence.

Kohei Kawaguchi, Shuji Taketomi, Yuri Mizutani, Emiko Uchiyama, Yosuke Ikegami, Sakae Tanaka, Nobuhiko Haga, Yoshihiko Nakamura

Abstract read
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Article in Orthopaedic journal of sports medicine, 2021. 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
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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

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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. Artificial intelligence in rehabilitation: a living systematic mapping review - first release.European journal of physical and rehabilitation medicine · 2025
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4 · The record

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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

8 authors.

Kohei KawaguchiUniversity of Tokyo Sports Science Initiative (UTSSI), Tokyo, Japan.
Shuji TaketomiUniversity of Tokyo Sports Science Initiative (UTSSI), Tokyo, Japan.
Yuri MizutaniUniversity of Tokyo Sports Science Initiative (UTSSI), Tokyo, Japan.
Emiko UchiyamaGraduate School of Information Science and Technology, The University of Tokyo, Tokyo, Japan.
Yosuke IkegamiGraduate School of Information Science and Technology, The University of Tokyo, Tokyo, Japan.
Sakae TanakaDepartment of Orthopaedic Surgery Faculty of Medicine, The University of Tokyo, Tokyo, Japan.
Nobuhiko HagaUniversity of Tokyo Sports Science Initiative (UTSSI), Tokyo, Japan.
Yoshihiko NakamuraUniversity of Tokyo Sports Science Initiative (UTSSI), Tokyo, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundSex-based biomechanical differences during a drop vertical jump (DVJ) may explain the increased risk of anterior cruciate ligament injury in females. Video motion capture using artificial intelligence (VMocap) is a new method for accurate motion analysis. PURPOSE: To use VMocap to identify sex-based differences in biomechanics during a DVJ in Asian athletes. STUDY

designControlled laboratory study.

methodsA total of 63 female and 61 male Asian soccer players volunteered for this study in 2018. Participants performed a bilateral DVJ using VMocap, and the knee valgus angle (KVA), knee flexion angle (KFA), hip flexion angle (HFA), and lower leg anterior inclination angle (LAIA) were calculated from the motion capture data. These joint angles and inclination angles were evaluated at the time of highest point of the first jump (H1), initial contact (IC), maximum knee flexion (MKF), toe-off (TO), and highest point of the second jump (H2). The unpaired

resultsAt H1, the KVA in females showed more valgus (-2.9° vs -5.4°) and the LAIA in females was greater (29.1° vs 25.7°) versus males (

conclusionAsian female soccer players showed increased KVA and LAIA, decreased KFA and HFA at MKF, and increased KFA at IC and TO compared with their male counterparts in this analysis of the DVJ. CLINICAL RELEVANCE: Elucidation of kinematic differences between the sexes can aid in predicting injuries.

Indexed as

artificial intelligencemotion analysissex differencevertical drop jump

Identifiers

PMID34778472
PMCPMC8573498

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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.