Evidence map›Paper›PMID 40757539›Full record

ArticleMuscles (Basel, Switzerland)2023

W Prime: Evidence-Based Proposal for a New Predictor of Gait Speed in Older Women.

Gersiel Nascimento de Oliveira Júnior, Jairo de Freitas Rodrigues de Sousa, Marcelo Augusto da Silva Carneiro, Fernanda Maria Martins, Samarita Beraldo Santagnello, Rosekeila Simões Nomelini, Cláudio de Oliveira Assumpção, Markus Vinícius Campos Souza, Fábio Lera Orsatti

Abstract read
In one paragraph

Article in Muscles (Basel, Switzerland), 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing 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

1 citing paper in PubMed.

  1. Trial
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

9 authors.

Gersiel Nascimento de Oliveira JúniorApplied Physiology, Nutrition and Exercise Research Group (PhyNER), Exercise Biology Research Laboratory (BioEx), Institute of Health Science, Federal University of Triangulo Mineiro (UFTM), Uberaba 38025-180, MG, Brazil.
Jairo de Freitas Rodrigues de SousaApplied Physiology, Nutrition and Exercise Research Group (PhyNER), Exercise Biology Research Laboratory (BioEx), Institute of Health Science, Federal University of Triangulo Mineiro (UFTM), Uberaba 38025-180, MG, Brazil.
Marcelo Augusto da Silva CarneiroApplied Physiology, Nutrition and Exercise Research Group (PhyNER), Exercise Biology Research Laboratory (BioEx), Institute of Health Science, Federal University of Triangulo Mineiro (UFTM), Uberaba 38025-180, MG, Brazil.
Fernanda Maria MartinsApplied Physiology, Nutrition and Exercise Research Group (PhyNER), Exercise Biology Research Laboratory (BioEx), Institute of Health Science, Federal University of Triangulo Mineiro (UFTM), Uberaba 38025-180, MG, Brazil.
Samarita Beraldo SantagnelloApplied Physiology, Nutrition and Exercise Research Group (PhyNER), Exercise Biology Research Laboratory (BioEx), Institute of Health Science, Federal University of Triangulo Mineiro (UFTM), Uberaba 38025-180, MG, Brazil.
Rosekeila Simões NomeliniGynecology and Obstetrics Program, Oncology Research Institute (IPON), Federal University of Triangulo Mineiro (UFTM), Uberaba 38025-180, MG, Brazil.ORCID 0000-0001-6591-7619
Cláudio de Oliveira AssumpçãoApplied Physiology, Nutrition and Exercise Research Group (PhyNER), Exercise Biology Research Laboratory (BioEx), Institute of Health Science, Federal University of Triangulo Mineiro (UFTM), Uberaba 38025-180, MG, Brazil.ORCID 0000-0003-1226-5041
Markus Vinícius Campos SouzaApplied Physiology, Nutrition and Exercise Research Group (PhyNER), Exercise Biology Research Laboratory (BioEx), Institute of Health Science, Federal University of Triangulo Mineiro (UFTM), Uberaba 38025-180, MG, Brazil.ORCID 0000-0002-8088-2423
Fábio Lera OrsattiApplied Physiology, Nutrition and Exercise Research Group (PhyNER), Exercise Biology Research Laboratory (BioEx), Institute of Health Science, Federal University of Triangulo Mineiro (UFTM), Uberaba 38025-180, MG, Brazil.ORCID 0000-0002-6258-2646

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe hyperbolic torque-duration curve depicts critical torque (CT) and W prime (W'), with the curve's asymptote representing CT as the boundary between heavy- and severe-intensity domains. W', the curvature constant, indicates cumulative work beyond CT. This study investigated age-related reductions in W', CT, and gait speed, and whether W' and CT predict gait speed independently of muscle torque.

methodsthree groups (adults, middle-aged, older) totaling 131 women were studied. W' and CT were determined using 60 maximal isometric voluntary contractions of knee extensors. The fast gait speed was calculated in walking tests at 10 m, 400 m, and six minutes (6 MWT).

resultsgait speed decreased (

conclusionsaging led to declines in W', CT, and gait speed. W', not CT, remained a significant predictor of gait speed, indicating its importance for older women's mobility.

Indexed as

agingcritical torquefatiguephysical function

Identifiers

PMID40757539
PMCPMC12225438

What OpenQuestion holds

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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.