Evidence map›Paper›PMID 23850328›Full record

ArticleGait & posture2014

Advanced age and the mechanics of uphill walking: a joint-level, inverse dynamic analysis.

Jason R Franz, Rodger Kram

Abstract read
In one paragraph

Article in Gait & posture, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 51 papers.

0numbers the graph read from it
0cells of the map it votes in
51citing 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

51 citing papers in PubMed.

  1. Trial
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  4. Versatile Exoskeleton Control Supports Elderly Joint Energetics During Hip-Intensive Tasks.IEEE transactions on neural systems and rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society · 2026
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  11. Review
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  15. Reconstruction of proximal hamstring ruptures restores joint biomechanics during various walking conditions.Hip international : the journal of clinical and experimental research on hip pathology and therapy · 2024
    Article
  16. Surface, but Not Age, Impacts Lower Limb Joint Work during Walking and Stair Ascent.Journal of functional morphology and kinesiology · 2023
    Article
  17. Article
  18. Review
  19. 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

2 authors.

Jason R FranzDepartment of Integrative Physiology, University of Colorado, Boulder, CO 80309, United States. Electronic address: jrfranz2@wisc.edu.
Rodger Kram

Funding

University of Colorado Aging Training GrantT32AG000279 · NIA · UNIVERSITY OF COLORADO DENVER · PI Kerrie Moreau · 2001 to 2026
$10.1M
NIA NIH HHS T32 AG000279
6 · The paper itself

Abstract

We sought to gain insight into age-related muscular limitations that may restrict the uphill walking ability of old adults. We hypothesized that: (1) old adults would exhibit smaller peak ankle joint kinetics and larger peak hip joint kinetics than young adults during both level and uphill walking and (2) these age-related differences in ankle and hip joint kinetics would be greatest during uphill vs. level walking. We quantified the sagittal plane ankle, knee, and hip joint kinetics of 10 old adults (mean ± SD, age: 72 ± 5 yrs) and 8 young adults (age: 27 ± 5 yrs) walking at 1.25 m/s on a dual-belt, force-measuring treadmill at four grades (0°, +3°, +6°, +9°). As hypothesized, old adults walked with smaller peak ankle joint kinetics (e.g., power generation: -18% at +9°) and larger peak hip joint kinetics (e.g., power generation: +119% at +9°) than young adults, most evident during the late stance phase of both level and uphill conditions. Old adults performed two to three times more single support positive work than young adults via muscles crossing the knee. In partial support of our second hypothesis, the age-related reduction in peak ankle joint moments was greater during uphill (-0.41 Nm/kg) vs. level (-0.30 Nm/kg) walking. However, old adults that exhibited reduced propulsive ankle function during level walking could perform 44% more trailing leg positive ankle joint work to walk uphill. Our findings indicate that maintaining ankle power generation and trailing leg propulsive function should be the primary focus of "prehabilitation" strategies for old adults to preserve their uphill walking ability.

Indexed as

AdultAgedAge FactorsAnkle JointBiomechanical PhenomenaExercise TestFemaleGaitHip JointHumansKnee JointMaleWalkingElderlyInclineKineticsLocomotionPrehabilitation

Identifiers

PMID23850328
PMCPMC3842369

What OpenQuestion holds

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Read underepoch 390

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.