Evidence map›Paper›PMID 26471854›Full record

ArticleThe Journal of orthopaedic and sports physical therapy2015

Quadriceps Strength, Muscle Activation Failure, and Patient-Reported Function at the Time of Return to Activity in Patients Following Anterior Cruciate Ligament Reconstruction: A Cross-sectional Study.

Lindsey K Lepley, Riann M Palmieri-Smith

Registry-linked trialOpen access · bronzeAbstract read
In one paragraph

Article in The Journal of orthopaedic and sports physical therapy, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT01555567 (Quadriceps Inhibition After ACL Injury), which is not on this map. Cited by 43 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
43citing papers in PubMed, 2 pooled it
4.7field-weighted citation impact, top 5% 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.

NCT01555567 nacompletednot on this map

Quadriceps Inhibition After ACL Injury: Neuromuscular and Functional Consequences

TypeinterventionalSponsorUniversity of MichiganRan2009 to 2014Enrolled43ConditionsAnterior Cruciate Ligament InjuryArmsElectrical Stimulation, Eccentric Exercise
3 · Its place in the literature

Who cites it

43 citing papers in PubMed, 2 syntheses or guidelines pooled it, 92 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Trial
  4. Trial
  5. Trial
  6. Trial
  7. Article
  8. Muscle atrophy after ACL reconstruction involves molecular mechanisms beyond unloading.Journal of applied physiology (Bethesda, Md. : 1985) · 2026
    Article
  9. Review
  10. Review
  11. Article
  12. Article
  13. Article
  14. Review
  15. Review
  16. Article
  17. Muscle-specific ERRγ activation mitigates muscle atrophy after ACL injury.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2025
    Article
  18. Article
  19. Article
  20. 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

2 authors at 1 institution in 1 country.

Lindsey K Lepley
Riann M Palmieri-Smith
Toyota Motor Corporation (Switzerland) · CH

Funding

Quadriceps inhibition after ACL injury: Neuromuscular and functional consequencesK08AR053152 · NIAMS · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI PALMIERI-SMITH, RIANN MARIE · 2008 to 2012
$635k
NIAMS NIH HHS K08 AR053152NIAMS NIH HHS K08 AR05315201A2
6 · The paper itself

Abstract

STUDY

designCross-sectional.

objectivesTo determine if quadriceps activation failure (QAF) moderates the relationship between quadriceps strength and physical function in individuals following anterior cruciate ligament (ACL) reconstruction.

backgroundQuadriceps activation failure may impair the recovery of physical function after ACL reconstruction, given that QAF reduces strength and strength is related to physical function. Evidence of this relationship has been found in individuals with knee osteoarthritis, wherein patients with lower strength and greater QAF had lower levels of physical function.

methodsParticipants consisted of 52 individuals who were cleared for return to activity at an average ± SD of 7.4 ± 1.2 months post-ACL reconstruction. Quadriceps activation failure was assessed using the superimposed burst technique, and quadriceps strength was assessed using concentric isokinetic contractions (Newton meters per kilogram). Physical function was quantified using a combined variable of a physical measure (single-leg hop for distance) and a self-reported function measure (International Knee Documentation Committee [IKDC] Subjective Knee Evaluation Form), calculated using a principal-component analysis. Simple correlations were then performed to determine the order in which variables were entered into the regression model to evaluate if QAF moderates the relationship between quadriceps strength and physical function.

resultsThe combination of quadriceps strength and the interaction of strength by QAF predicted 30% of the variance in physical function (R(2) = 0.30, P<.001; principal-component analysis, -0.61(strength) + 0.02(interaction) -1.896); however, the interaction of strength by QAF only accounted for 7% of the capabilities of the model (P = .023).

conclusionPhysical function is largely influenced by the recovery of quadriceps strength and minimally attenuated by QAF. These data suggest that QAF may affect individuals post-ACL reconstruction differently, and to a lesser extent, than individuals with knee osteoarthritis. This trial was prospectively registered in a public registry (NCT01555567).

Indexed as

Anterior Cruciate Ligament InjuriesAnterior Cruciate Ligament ReconstructionReturn to SportAdolescentAdultAnterior Cruciate LigamentAthletic InjuriesCross-Sectional StudiesHumansKnee InjuriesMuscle StrengthQuadriceps MuscleYoung AdultACLcentral activation ratiohop testingIKDCreturn to sports

Identifiers

PMID26471854
PMCPMC4768729
OpenAlexW2115436772

What OpenQuestion holds

Textmetadata
LicenceTDM
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.