Evidence map›Paper›PMID 28794494›Full record

ArticleScientific reports2017

Evidence of Energetic Optimization during Adaptation Differs for Metabolic, Mechanical, and Perceptual Estimates of Energetic Cost.

Natalia Sánchez, Sungwoo Park, James M Finley

Registry-linked trialOpen access · goldAbstract read
In one paragraph

Article in Scientific reports, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT03916562 (Toward a Mechanistic Understanding of Optimization Principles Underlying Hemiparetic Gait), which is not on this map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
3.0field-weighted citation impact, top 8% 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.

NCT03916562 naunknown statusnot on this mapstarted 2018, after this paper: background citation

Toward a Mechanistic Understanding of Optimization Principles Underlying Hemiparetic Gait

TypeinterventionalSponsorUniversity of Southern CaliforniaRan2018 to 2023Enrolled108ConditionsStrokeArmsManipulation of spatiotemporal coordination during walking
3 · Its place in the literature

Who cites it

24 citing papers in PubMed, 57 citations in OpenAlex.

  1. Trial
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  7. Review
  8. Author response to Panza et al.The Journal of physiology · 2025
    Article
  9. Article
  10. Article
  11. Article
  12. Neuromuscular control: from a biomechanist's perspective.Frontiers in sports and active living · 2023
    Review
  13. Article
  14. Article
  15. Article
  16. 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

3 authors at 1 institution in 1 country.

Natalia SánchezDivision of Biokinesiology and Physical Therapy, University of Southern California, Los Angeles, CA, 90033, USA.ORCID 0000-0002-6467-1781
Sungwoo ParkDivision of Biokinesiology and Physical Therapy, University of Southern California, Los Angeles, CA, 90033, USA.
James M FinleyDivision of Biokinesiology and Physical Therapy, University of Southern California, Los Angeles, CA, 90033, USA. jmfinley@usc.edu.
University of Southern California · US

Funding

Interdisciplinary Engineering Career Development Center in Movement and Rehabilitation SciencesK12HD073945 · NICHD · NORTHWESTERN UNIVERSITY AT CHICAGO · PI DEWALD, JULIUS P, REINKENSMEYER, DAVID JAY · 2012 to 2021
$7.9M
NICHD NIH HHS K12 HD073945
6 · The paper itself

Abstract

The theory that the sensorimotor system minimizes energetic cost during locomotion has long been supported by both computational models and empirical studies. However, it has yet to be determined if the behavior to which people converge when exposed to a novel perturbation during locomotion is also energetically optimal. We address this issue in the context of adaptation to walking on a split-belt treadmill, which can impose a left-right asymmetry in step lengths. In response to this asymmetry, participants gradually adjust their foot placement to adopt steps of equal length. Here, we characterized metabolic, mechanical, and perceptual estimates of energetic cost associated with a range of asymmetries to determine whether symmetry is the energetically optimal strategy for walking on a split-belt treadmill. We found that taking steps of equal length did not minimize metabolic cost or mechanical cost. In addition, perceptual estimates of cost were not sensitive to changes in asymmetry. However, symmetry was identified as the optimal strategy when energetic cost was estimated from a composite metric that combined both metabolic and mechanical costs. These results suggest that adaptation may arise from optimization of a composite estimate of effort derived from feedback about the interaction between the body and environment.

Indexed as

Energy MetabolismMechanical PhenomenaPerceptionWalkingAdultFemaleHumansMaleYoung Adult

Identifiers

PMID28794494
PMCPMC5550492
OpenAlexW2744171519

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

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.