Evidence map›Paper›PMID 35484569›Full record

ArticleBMC sports science, medicine & rehabilitation2022

What are gender differences in lower limb muscle activity during jump-landing tasks? A systematic review and meta-analysis.

Mohammad Seyedahmadi, Hooman Minoonejad, Mohammad Karimizadeh Ardakani, Zahra Heidari, Mohammad Bayattork, Hadi Akbari

Open access · goldAbstract read
In one paragraph

Article in BMC sports science, medicine & rehabilitation, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed, 1 pooled it
2.6field-weighted citation impact, top 10% of its field
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

8 citing papers in PubMed, 1 synthesis or guideline pooled it, 13 citations in OpenAlex.

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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

6 authors at 5 institutions in 1 country.

Mohammad SeyedahmadiDepartment of Sport Sciences, Velayat University, Iranshahr, Iran.
Hooman MinoonejadDepartment of Health and Sport Medicine, University of Tehran, Tehran, Iran. h.minoonejad@ut.ac.ir.
Mohammad Karimizadeh ArdakaniDepartment of Health and Sport Medicine, University of Tehran, Tehran, Iran.
Zahra HeidariDepartment of Epidemiology and Biostatistics, Isfahan University of Medical Sciences, Isfahan, Iran.
Mohammad BayattorkDepartment of Sport Sciences, University of Hormozgan, Bandar Abbas, Iran.
Hadi AkbariDepartment of Sport Sciences, University of Zabol, Zabol, Iran.
University of Tehran · IRHormozgan University · IRIranshahr University · IRIsfahan University of Medical Sciences · IRZabol University · IR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundGender differences in muscle activity during landing have been proposed as a possible contributing factor to the greater incidence of anterior cruciate ligament injuries in women. Conflicting results among a few studies in this regard makes it impossible to reach correct conclusions.

objectivesThe aim of this study was systematic review and the meta-analysis of previous studies which have compared the electromyographic activity of lower limb muscles in gluteus muscles (maximus and medius), quadriceps (rectus femoris, vastus medialis and lateralis), hamstrings (biceps femoris and semimembranosus), and gastrocnemius in men and women in jump-landing task.

methodsA systematic search of the PubMed, SCOPUS, Science Direct databases was performed for eligible articles in October 2020. Cross-sectional studies that compared the muscle activity of male and female athletes without a history of previous injury in the jump-landing task were included. Unisex and non-athlete's studies were extracted from the included studies. The data were synthesized using a fixed and random effects model.

resultsEight studies involving 145 participants were included. All participants were people who participated in regular exercises. The meta-analysis of timing and muscle activity was performed in the feedforward (pre contact) and feedback (post contact) stages. There were no significant differences in the muscle activity of biceps femoris (MD = -12.01; 95% CI - 51.49 to 27.47; p = 0.55; I

conclusionThe results showed that in all lower limb muscles except vastus lateralis there were no significant differences between muscle activity and muscle contraction timing in both sexes before and after foot contact. Therefore, it can be concluded that the reason for the greater susceptibility of ACL injuries in women than men is maybe related to other factors such as biomechanical and hormonal. Additional good quality research in this regard is required to strengthen these conclusions.

Indexed as

Anterior cruciate ligamentElectromyographyGenderJump–landingMuscle activity

Identifiers

PMID35484569
PMCPMC9052696
OpenAlexW4225122538

What OpenQuestion holds

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LicenceCC BY
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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.