Evidence map›Paper›PMID 27582297›Full record

Trial reportJournal of neurophysiology2016

Progressive resistance exercise restores some properties of the triphasic EMG pattern and improves bradykinesia: the PRET-PD randomized clinical trial.

Fabian J David, Julie A Robichaud, David E Vaillancourt, Cynthia Poon, Wendy M Kohrt, Cynthia L Comella, Daniel M Corcos

Open access · bronzeAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Journal of neurophysiology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed, 4 pooled it
2.9field-weighted citation impact, top 9% 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

22 citing papers in PubMed, 4 syntheses or guidelines pooled it, 48 citations in OpenAlex.

  1. Pooled it
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  4. Guideline
  5. Trial
  6. Trial
  7. Article
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  15. Evolving concepts on bradykinesia.Brain : a journal of neurology · 2020
    Review
  16. Article
  17. Review
  18. Observational
  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

7 authors at 5 institutions in 1 country.

Fabian J DavidDepartment of Physical Therapy and Human Movement Sciences, Northwestern University, Chicago, Illinois; Fabian.J.David@gmail.com.ORCID 0000-0001-7780-788X
Julie A RobichaudPhysical Therapy Department, University of Illinois at Chicago, Chicago, Illinois.
David E VaillancourtDepartments of Applied Physiology and Kinesiology, Biomedical Engineering, and Neurology, University of Florida, Gainesville, Florida.
Cynthia PoonDepartment of Physical Therapy and Human Movement Sciences, Northwestern University, Chicago, Illinois.
Wendy M KohrtDivision of Geriatric Medicine, University of Colorado School of Medicine, Aurora, Colorado; and.
Cynthia L ComellaDepartment of Neurological Sciences, Section of Parkinson Disease and Movement Disorders, Rush University Medical Center, Chicago, Illinois.
Daniel M CorcosDepartment of Physical Therapy and Human Movement Sciences, Northwestern University, Chicago, Illinois.
Northwestern University · USRush University Medical Center · USUniversity of Colorado Denver · USUniversity of Florida · USUniversity of Illinois Chicago · US

Funding

MOTOR DEFICITS--EXPERIMENTAL AND CLINICAL CORRELATESR01NS028127 · NINDS · UNIVERSITY OF ILLINOIS AT CHICAGO · PI CORCOS, DANIEL M. · 1993 to 2011
$4.0M
NINDS NIH HHS R01 NS028127
6 · The paper itself

Abstract

In Parkinson's disease (PD), the characteristic triphasic agonist and antagonist muscle activation pattern during ballistic movement is impaired: the number of agonist muscle bursts is increased, and the amplitudes of the agonist and antagonist bursts are reduced. The breakdown of the triphasic electromyographic (EMG) pattern has been hypothesized to underlie bradykinesia in PD. Progressive resistance exercise has been shown to improve clinical measures of bradykinesia, but it is not clear whether the benefits for bradykinesia are accompanied by changes in agonist and antagonist muscle activity. This study examined the spatiotemporal changes in agonist and antagonist muscle activity following 24 mo of progressive resistance exercise and the combined relationship between spatiotemporal muscle activity and strength measures and upper limb bradykinesia. We compared the effects of progressive resistance exercise training (PRET) with a nonprogressive exercise intervention, modified Fitness Counts (mFC), in patients with PD. We randomized 48 participants with mild-to-moderate PD to mFC or PRET. At the study endpoint of 24 mo, participants randomized to PRET compared with mFC had significantly faster movement velocity, accompanied by significant increases in the duration, magnitude, and magnitude normalized to duration of the 1st agonist burst and fewer number of agonist bursts before peak velocity. The antagonist muscle activity was increased relative to baseline but did not differ between groups. Spatiotemporal EMG muscle activity and muscle strength were significantly associated with upper limb bradykinesia. These findings demonstrate that progressive resistance exercise improves upper limb movement velocity and restores some aspects of the triphasic EMG pattern.

Indexed as

AgedElectromyographyFemaleFollow-Up StudiesHumansHypokinesiaMaleMiddle AgedMuscle StrengthParkinson DiseaseProspective StudiesResistance TrainingSingle-Blind MethodbradykinesiaEMG triphasic muscle activation patternParkinson's diseasePRET-PD randomized clinical trialprogressive resistance exercise

Identifiers

PMID27582297
PMCPMC5110637
OpenAlexW2516027540

What OpenQuestion holds

Textmetadata
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.