Evidence map›Paper›PMID 31651243›Full record

ArticleBMC geriatrics2019

Age-related deficits in bilateral motor synergies and force coordination.

Nyeonju Kang, Lisa M Roberts, Clara Aziz, James H Cauraugh

Abstract read
In one paragraph

Article in BMC geriatrics, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing 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

11 citing papers in PubMed.

  1. Trial
  2. Article
  3. Article
  4. Article
  5. Altered Bimanual Kinetic and Kinematic Motor Control Capabilities in Older Women.International journal of environmental research and public health · 2023
    Article
  6. Article
  7. Article
  8. Article
  9. One more time about motor (and non-motor) synergies.Experimental brain research · 2021
    Review
  10. Article
  11. 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

4 authors.

Nyeonju KangDivision of Sport Science and Sport Science Institute, Incheon, South Korea.
Lisa M RobertsDepartment of Applied Physiology and Kinesiology, University of Florida, Gainesville, FL, 32611-8206, USA.
Clara AzizDepartment of Applied Physiology and Kinesiology, University of Florida, Gainesville, FL, 32611-8206, USA.
James H CauraughDepartment of Applied Physiology and Kinesiology, University of Florida, Gainesville, FL, 32611-8206, USA. cauraugh@ufl.edu.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAgeing may cause impairments in executing bilateral movement control. This study investigated age-related changes in interlimb force coordination across multiple trials by quantifying bilateral motor synergies based on the uncontrolled manifold hypothesis. Participants completed the trials with and without visual feedback.

methodsTwenty healthy individuals (10 older adults and 10 young adults) performed 12 isometric force control trials for the two vision conditions at 5% of maximal voluntary contraction. All dependent variables were analyzed in two-way mixed model (Group × Vision Condition; 2 × 2) ANOVAs with repeated measures on the last factor.

resultsThe analyses revealed that older adults had greater mean force produced by two hands in both vision conditions (i.e., yes and no visual feedback). Across both vision conditions, the older adult group showed greater asymmetrical force variability (i.e., standard deviation of non-dominant hand > standard deviation of dominant hand) and revealed more positive correlation coefficients between forces produced by two hands as compared with the young adult group. Finally, an index of bilateral motor synergies was significantly greater in young adults than older adults when visual feedback was available.

conclusionThe current findings indicate that deficits in interlimb force coordination across multiple trials appeared in older adults.

Indexed as

AgedAgingFeedback, SensoryFemaleFingersHand StrengthHumansIsometric ContractionMalePhotic StimulationPsychomotor PerformanceYoung AdultAgeingInterlimb coordinationMotor controlUncontrolled manifoldVisual information

Identifiers

PMID31651243
PMCPMC6814115

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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.