Evidence map›Paper›PMID 30125320›Full record

ArticlePloS one2018

Validity and reliability of evaluating hip abductor strength using different normalization methods in a functional electromechanical device.

Enrique Cerda Vega, Daniel Jerez-Mayorga, Ramón Machado Payer, Christian Campos Jara, Iris Guzman-Guzman, Alvaro Reyes Ponce, Luis Javier Chirosa

Abstract read
In one paragraph

Article in PloS one, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing 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

18 citing papers in PubMed.

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  6. Dynamometric Strength Profile of Hip Muscles in Youth Soccer Players.International journal of environmental research and public health · 2023
    Article
  7. Test-Retest Reliability of the Functional Electromechanical Dynamometer for Squat Exercise.International journal of environmental research and public health · 2023
    Article
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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

7 authors.

Enrique Cerda VegaCarrera de Kinesiología, Departamento Ciencias de la Salud, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile.ORCID 0000-0003-0813-3695
Daniel Jerez-MayorgaFacultad Ciencias de la Rehabilitación, Universidad Andrés Bello, Santiago, Chile.
Ramón Machado PayerFaculty of Sciences for Physical Activity and Sport, University of Granada, Granada, Spain.
Christian Campos JaraFacultad Ciencias de la Rehabilitación, Universidad Andrés Bello, Santiago, Chile.
Iris Guzman-GuzmanUnidad Académica de Ciencias Químico-Biológicas, Universidad Autónoma de Guerrero, Chilpancingo, México.
Alvaro Reyes PonceFacultad Ciencias de la Rehabilitación, Universidad Andrés Bello, Santiago, Chile.
Luis Javier ChirosaFaculty of Sciences for Physical Activity and Sport, University of Granada, Granada, Spain.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The hip abductor muscles are vitally important for pelvis stability, and common strength deficits can negatively affect functionality. The muscle strength can be measured using different dynamometers and be evaluated in three positions (side-lying, standing, and supine). Obtained strength data can be expressed in different ways, with data normalization providing more objective and comparable results. The aim of this study was to establish the validity and reliability of three protocols in evaluating the isometric strength of the hip abductor muscles. A new functional electromechanical dynamometer assessed strength in three positions, with findings subjected to three data normalization methods. In two identical sessions, the hip abductor strengths of 29 subjects were recorded in the side-lying, standing, and supine positions. Peak force was recorded in absolute terms and normalized against body mass, fat-free mass, and an allometric technique. The peak force recorded in the side-lying position was 30% and 27% higher than in the standing and supine positions, respectively, independent of data normalization methodology. High inter-protocol correlations were found (r: 0.72 to 0.98, p ≤ 0.001). The supine position with allometric data normalization had the highest test-retest reliability (0.94 intraclass correlation coefficient and 5.64% coefficient of variation). In contrast, the side-lying position with body mass data normalization had a 0.66 intraclass correlation coefficient and 9.8% coefficient of variation. In conclusion, the functional electromechanical dynamometer is a valid device for measuring isometric strength in the hip abductor muscles. The three assessed positions are reliable, although the supine position with allometric data normalization provided the best results.

Indexed as

Muscle Strength DynamometerAdolescentAdultBiomechanical PhenomenaFemaleHealthy VolunteersHip JointHumansIsometric ContractionMaleMuscle, SkeletalMuscle StrengthPelvisPostureReproducibility of ResultsYoung Adult

Identifiers

PMID30125320
PMCPMC6101381

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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.