Quadriceps muscle weakness, activation deficits, and fatigue with Parkinson’s disease.
This note indexes a cited or audit-added source. It may be an original study, review, guideline, form or methods reference. Treat the specific design and the evidence below as authoritative; a source note is not automatically a primary study.
Bibliographic record from the original reports
Access labels embedded in these original reference strings are historical. Current access and exact checked components are stated separately below.
Stevens-Lapsley J, Kluger BM, Schenkman M. Quadriceps Muscle Weakness, Activation Deficits, and Fatigue With Parkinson Disease. Neurorehabilitation and Neural Repair. 2012;26:533–541. DOI 10.1177/1545968311425925
Conditions: COND-PD Parkinson’s disease
Scoped audit evidence
These are source- and component-level audit summaries as of 3 October 2026. Access and comparison scope can differ by report; none certifies every result or the underlying raw data.
Parkinson’s disease — strength
- access status: full_main_text_available
STR-06-05
STR-06-01
STR-06-02
STR-06-03
STR-06-04
Limitations: Only current scoped checks; archived captures not authenticated against live originals.
Parkinson’s disease strength
- current access: full_main_text_available
- primary version: PMC author manuscript
Parkinson’s disease strength component — Samples, selected leg, severity differences and correlations
Methods and Results match 17 PD/17 controls, stronger-leg analysis, optimal ON testing, subgroup sizes 6/11, all quoted torque differences/CIs, p=.056 for the combined group, and correlations −.67/−.65.
Source locator: Methods and Results Quadriceps Torque/Activation
Limitations: AI-assisted source comparison; no raw-data verification.
Parkinson’s disease strength component — How the subgroup threshold is described
Methods calls 31.7 a median cutoff; Table 1 and Results call 31.7 the mean. The report says mean without disclosing this source inconsistency.
Source locator: Methods Participants; Table 1; Results
Limitations: AI-assisted source comparison; no raw-data verification.
Parkinson’s disease strength component — Fatigability interpretation
The protocol used 30 consecutive 90°/s extensions. Higher-severity participants increased torque by 24.6%. The report appropriately discusses underactivation rather than equating this with superior endurance.
Source locator: Outcomes Fatigability Testing and Results Quadriceps Fatigability
Limitations: AI-assisted source comparison; no raw-data verification.
Parkinson’s disease strength component — Fixed knee dynamometry protocol
Methods confirms HUMAC NORM at 60° knee flexion, two warm-ups, practice MVC, three maximum trials, best score, 2000-Hz acquisition, gravity correction, both legs tested and stronger leg analyzed.
Source locator: Outcomes Isometric Muscle Torque Testing and Study Design
Limitations: AI-assisted source comparison; no raw-data verification.
Parkinson’s disease strength component — Residual acquisition details: feedback and gravity correction
The primary isometric Methods explicitly reports verbal encouragement, visual targets set slightly above the practice MVC, 2000 Hz acquisition and gravity correction. Both legs were tested; the less-involved stronger leg was selected for analysis. This closes the detailed protocol clauses beyond the original compact check.
Source locator: https://doi.org/10.1177/1545968311425925; audit evidence record, Isometric Muscle Torque Testing
Limitations: AI-assisted source comparison; no raw-data verification.
Linked audit findings
Reports citing this source
- Strength muscle power and rapid force production assessment in Parkinson’s disease · reference 6 · original reference
Update record
- 2026-10-03: Created from the supplied reports and final scoped audit. New evidence should be appended with source version, access date, exact locator and affected report links.
Updating the wiki · Evidence and status guide