Evidence map›Paper›PMID 30316545›Full record

ArticleJournal of biomechanics2018

The scaling or ontogeny of human gait kinetics and walk-run transition: The implications of work vs. peak power minimization.

J R Usherwood, T Y Hubel, B J H Smith, Z T Self Davies, G Sobota

Abstract read
In one paragraph

Article in Journal of biomechanics, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing 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

8 citing papers in PubMed.

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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

5 authors.

J R UsherwoodStructure and Motion Lab., The Royal Veterinary College, North Mymms, Hatfield, Herts AL9 7TA, UK. Electronic address: jusherwood@rvc.ac.uk.
T Y HubelStructure and Motion Lab., The Royal Veterinary College, North Mymms, Hatfield, Herts AL9 7TA, UK.
B J H SmithStructure and Motion Lab., The Royal Veterinary College, North Mymms, Hatfield, Herts AL9 7TA, UK.
Z T Self DaviesStructure and Motion Lab., The Royal Veterinary College, North Mymms, Hatfield, Herts AL9 7TA, UK.
G SobotaStructure and Motion Lab., The Royal Veterinary College, North Mymms, Hatfield, Herts AL9 7TA, UK.

Funding

Biotechnology and Biological Sciences Research Council BB/G021627/1Wellcome Trust 202854/Z/16/Z
6 · The paper itself

Abstract

A simple model is developed to find vertical force profiles and stance durations that minimize either limb mechanical work or peak power demands during bipedal locomotion. The model predicts that work minimization is achieved with a symmetrical vertical force profile, consistent with previous models and observations of adult humans, and data for 487 participants (predominantly 11-18 years old) required to walk at a range of speeds at a Science Fair. Work minimization also predicts the discrete walk-run transition, familiar for adult humans. In contrast, modeled peak limb mechanical power demands are minimized with an early skew in vertical ground reaction force that increases with speed, and stance durations that decrease steadily with speed across the work minimizing walk-run transition speed. The peak power minimization model therefore predicts a continuous walk-run gait transition that is quantitatively consistent with measurements of younger children (1.1-4.7 years) required to locomote at a range of speeds but free to select their own gaits.

Indexed as

Models, BiologicalAdolescentBiomechanical PhenomenaChildChild, PreschoolFemaleHumansInfantKineticsMaleRunningWalkingChildGaitRunWalk

Identifiers

PMID30316545
PMCPMC6224478

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

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.