Evidence map›Paper›PMID 22279190›Full record

Trial reportJournal of neurophysiology2012

Robustness of muscle synergies underlying three-dimensional force generation at the hand in healthy humans.

Jinsook Roh, William Z Rymer, Randall F Beer

Registry-linked trialOpen access · greenAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Journal of neurophysiology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT06523335 (Intermuscular Coordination as a Novel Clinical Target for Stroke Neurorehabilitation), which is not on this map. Cited by 74 papers.

0numbers the graph read from it
0cells of the map it votes in
74citing papers in PubMed
7.2field-weighted citation impact, top 2% 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.

NCT06523335 narecruitingnot on this mapstarted 2024, after this paper: background citation

Intermuscular Coordination as a Novel Clinical Target for Stroke Neurorehabilitation

TypeinterventionalSponsorUniversity of HoustonRan2024 to 2029Enrolled74ConditionsStrokeArmsNeuromuscular coordination-guided rehabilitative training, Force strengthening-guided rehabilitative training
3 · Its place in the literature

Who cites it

74 citing papers in PubMed, 145 citations in OpenAlex.

  1. Trial
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  14. Review
  15. Neuromuscular control: from a biomechanist's perspective.Frontiers in sports and active living · 2023
    Review
  16. Muscle synergies in joystick manipulation.Frontiers in physiology · 2023
    Article
  17. Article
  18. Article
  19. Article
  20. Article

14 more citing papers are in PubMed but not listed here.

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.

Jinsook RohSensory Motor Performance Program, Rehabilitation Institute of Chicago, Chicago, IL, USA. j-roh@northwestern.edu
William Z Rymer
Randall F Beer
Shirley Ryan AbilityLab · US

Funding

PHS HHS H133G060169
6 · The paper itself

Abstract

Previous studies using advanced matrix factorization techniques have shown that the coordination of human voluntary limb movements may be accomplished using combinations of a small number of intermuscular coordination patterns, or muscle synergies. However, the potential use of muscle synergies for isometric force generation has been evaluated mostly using correlational methods. The results of such studies suggest that fixed relationships between the activations of pairs of muscles are relatively rare. There is also emerging evidence that the nervous system uses independent strategies to control movement and force generation, which suggests that one cannot conclude a priori that isometric force generation is accomplished by combining muscle synergies, as shown in movement control. In this study, we used non-negative matrix factorization to evaluate the ability of a few muscle synergies to reconstruct the activation patterns of human arm muscles underlying the generation of three-dimensional (3-D) isometric forces at the hand. Surface electromyographic (EMG) data were recorded from eight key elbow and shoulder muscles during 3-D force target-matching protocols performed across a range of load levels and hand positions. Four synergies were sufficient to explain, on average, 95% of the variance in EMG datasets. Furthermore, we found that muscle synergy composition was conserved across biomechanical task conditions, experimental protocols, and subjects. Our findings are consistent with the view that the nervous system can generate isometric forces by assembling a combination of a small number of muscle synergies, differentially weighted according to task constraints.

Indexed as

AdultElectromyographyFemaleHandHumansIsometric ContractionMaleMovementMuscle, SkeletalPhotic StimulationPsychomotor Performance

Identifiers

PMID22279190
PMCPMC3331600
OpenAlexW2141904056

What OpenQuestion holds

Textmetadata
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.