Evidence map›Paper›PMID 36534645›Full record

ArticlePloS one2022

Uneven terrain treadmill walking in younger and older adults.

Ryan J Downey, Natalie Richer, Rohan Gupta, Chang Liu, Erika M Pliner, Arkaprava Roy, Jungyun Hwang, David J Clark, Chris J Hass, Todd M Manini and 2 more

Abstract read
In one paragraph

Article in PloS one, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing 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

16 citing papers in PubMed.

  1. Article
  2. Mobility Function and Aperiodic Electrocortical Activity in Younger and Older Adults.IEEE transactions on neural systems and rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society · 2026
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  16. Comparison of EEG Source Localization Using Simplified and Anatomically Accurate Head Models in Younger and Older Adults.IEEE transactions on neural systems and rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society · 2023
    Article
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

12 authors.

Ryan J DowneyDepartment of Biomedical Engineering, University of Florida, Gainesville, FL, United States of America.ORCID 0000-0002-0822-5488
Natalie RicherDepartment of Biomedical Engineering, University of Florida, Gainesville, FL, United States of America.ORCID 0000-0001-6041-9522
Rohan GuptaDepartment of Biomedical Engineering, University of Florida, Gainesville, FL, United States of America.ORCID 0000-0003-3687-8045
Chang LiuDepartment of Biomedical Engineering, University of Florida, Gainesville, FL, United States of America.ORCID 0000-0002-0381-4136
Erika M PlinerDepartment of Biomedical Engineering, University of Florida, Gainesville, FL, United States of America.ORCID 0000-0002-0713-5675
Arkaprava RoyDepartment of Biostatistics, University of Florida, Gainesville, FL, United States of America.ORCID 0000-0001-6976-9967
Jungyun HwangDepartment of Aging and Geriatric Research, University of Florida, Gainesville, FL, United States of America.ORCID 0000-0001-7538-4414
David J ClarkDepartment of Aging and Geriatric Research, University of Florida, Gainesville, FL, United States of America.ORCID 0000-0002-9921-1849
Chris J HassDepartment of Applied Physiology and Kinesiology, University of Florida, Gainesville, FL, United States of America.ORCID 0000-0003-3484-5258
Todd M ManiniDepartment of Aging and Geriatric Research, University of Florida, Gainesville, FL, United States of America.ORCID 0000-0002-5970-4462
Rachael D SeidlerDepartment of Applied Physiology and Kinesiology, University of Florida, Gainesville, FL, United States of America.ORCID 0000-0003-2452-9024
Daniel P FerrisDepartment of Biomedical Engineering, University of Florida, Gainesville, FL, United States of America.ORCID 0000-0001-6373-6021

Funding

University of Florida Older Americans Independence Center (OAIC)P30AG028740 · NIA · UNIVERSITY OF FLORIDA · PI CHRISTIAAN LEEUWENBURGH · 2007 to 2026
$22.8M
Multimodal imaging of brain activity to investigate walking and mobility decline in older adultsU01AG061389 · NIA · UNIVERSITY OF FLORIDA · PI CLARK, DAVID J, MANINI, TODD · 2018 to 2023
$5.8M
Translational Research Training on Aging and Mobility (TRAM)T32AG062728 · NIA · UNIVERSITY OF FLORIDA · PI Todd Manini · 2020 to 2026
$2.0M
Efficacy of balance training with intermittent sensory perturbationsF32AG072808 · NIA · UNIVERSITY OF FLORIDA · PI PLINER, ERIKA M · 2021 to 2023
$145k
NIA NIH HHS F32 AG072808NIA NIH HHS P30 AG028740NIA NIH HHS T32 AG062728NIA NIH HHS U01 AG061389
6 · The paper itself

Abstract

We developed a method for altering terrain unevenness on a treadmill to study gait kinematics. Terrain consisted of rigid polyurethane disks (12.7 cm diameter, 1.3-3.8 cm tall) which attached to the treadmill belt using hook-and-loop fasteners. Here, we tested four terrain unevenness conditions: Flat, Low, Medium, and High. The main objective was to test the hypothesis that increasing the unevenness of the terrain would result in greater gait kinematic variability. Seventeen younger adults (age 20-40 years), 25 higher-functioning older adults (age 65+ years), and 29 lower-functioning older adults (age 65+ years, Short Physical Performance Battery score < 10) participated. We customized the treadmill speed to each participant's walking ability, keeping the speed constant across all four terrain conditions. Participants completed two 3-minute walking trials per condition. Using an inertial measurement unit placed over the sacrum and pressure sensors in the shoes, we calculated the stride-to-stride variability in step duration and sacral excursion (coefficient of variation; standard deviation expressed as percentage of the mean). Participants also self-reported their perceived stability for each condition. Terrain was a significant predictor of step duration variability, which roughly doubled from Flat to High terrain for all participant groups: younger adults (Flat 4.0%, High 8.2%), higher-functioning older adults (Flat 5.0%, High 8.9%), lower-functioning older adults (Flat 7.0%, High 14.1%). Similarly, all groups exhibited significant increases in sacral excursion variability for the Medium and High uneven terrain conditions, compared to Flat. Participants were also significantly more likely to report feeling less stable walking over all three uneven terrain conditions compared to Flat. These findings support the hypothesis that altering terrain unevenness on a treadmill will increase gait kinematic variability and reduce perceived stability in younger and older adults.

Indexed as

Exercise TestGaitAdultAgedBiomechanical PhenomenaHumansWalking SpeedYoung Adult

Identifiers

PMID36534645
PMCPMC9762558

What OpenQuestion holds

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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.