Evidence map›Paper›PMID 35176686›Full record

ArticleJournal of electromyography and kinesiology : official journal of the International Society of Electrophysiological Kinesiology2022

Distribution of innervation zone and muscle fiber conduction velocity in the biceps brachii muscle.

Xiaoyan Li, Chengjun Huang, Zhiyuan Lu, Inga Wang, Cliff S Klein, Liqun Zhang, Ping Zhou

Open access · greenAbstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Journal of electromyography and kinesiology : official journal of the International Society of Electrophysiological Kinesiology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
0.3field-weighted citation impact, top 51% 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.

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

2 citing papers in PubMed, 4 citations in OpenAlex.

  1. Article
  2. 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

7 authors at 5 institutions in 2 countries.

Xiaoyan LiFischell Department of Bioengineering, University of Maryland at College Park, College Park, MD, USA; Department of Neurology, Medical College of Wisconsin, Milwaukee, WI, USA. Electronic address: xli025@umd.edu.
Chengjun HuangDepartment of Neuroscience, Baylor College of Medicine, Houston, TX, USA.
Zhiyuan LuFaculty of Biomedical and Rehabilitation Engineering, University of Health and Rehabilitation Sciences, Qingdao, Shandong, China.
Inga WangDepartment of Rehabilitation Sciences and Technology, University of Wisconsin-Milwaukee, Milwaukee, WI, USA.
Cliff S KleinGuangdong Work Injury Rehabilitation Center, Guangzhou, Guangdong, China.
Liqun ZhangFischell Department of Bioengineering, University of Maryland at College Park, College Park, MD, USA; Department of Physical Therapy and Rehabilitation Science, University of Maryland at Baltimore, Baltimore, MD, USA.
Ping ZhouFaculty of Biomedical and Rehabilitation Engineering, University of Health and Rehabilitation Sciences, Qingdao, Shandong, China.
Baylor College of Medicine · USGuangdong Work Injury Rehabilitation Hospital · CNMedical College of Wisconsin · USUniversity of Maryland, Baltimore · USUniversity of Wisconsin–Milwaukee · US

Funding

High-Density surface EMG based CMAP scan for motor unit number estimationR21NS113716 · NINDS · MEDICAL COLLEGE OF WISCONSIN · PI BARKHAUS, PAUL E, LI, XIAOYAN · 2020 to 2020
$432k
NINDS NIH HHS R21 NS113716
6 · The paper itself

Abstract

The spatial distributions of muscle innervation zone (IZ) and muscle fiber conduction velocity (CV) were examined in nine healthy young male participants. High-density surface electromyography (EMG) was collected from the biceps brachii muscle when subjects performed isometric elbow flexions at 20% to 80% of the maximal voluntary contraction (MVC). A total of 9498 samples of IZs were identified and CVs were calculated using the Radon transform. The center and width of IZ sample distribution were compared within four different force levels and six medial to lateral electrode column positions using repeated measures ANOVA and multiple comparison tests. Significant shifts of IZ center were observed in the medial columns (Columns 5, 6, and 7) compared with the lateral columns (Columns 3 and 4) (p < 0.05). Similarly, significant differences in the IZ width were found in Column 7 and 8 compared to Column 3 (p < 0.05). In contrast, muscle CV was unaffected by column position. Instead, muscle CV was faster at 40% and 80% MVC compared to 20% MVC (p < 0.05). The findings of this study add further insights into the physiological properties of the biceps brachii muscle.

Indexed as

Isometric ContractionMuscle, SkeletalArmElectromyographyHumansMaleMuscle ContractionMuscle Fibers, SkeletalInnervation zoneMuscleMuscle conduction velocityRadon transformSurface electromyography (EMG)

Identifiers

PMID35176686
PMCPMC8960364
OpenAlexW4210569623

What OpenQuestion holds

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LicenceTDM
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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.