Evidence map›Paper›PMID 32966563›Full record

Trial reportJournal of athletic training2020

Immediate Biochemical Changes After Gait Biofeedback in Individuals With Anterior Cruciate Ligament Reconstruction.

Brittney A Luc-Harkey, Jason Franz, Anthony C Hackney, J Troy Blackburn, Darin A Padua, Todd Schwartz, Hope Davis-Wilson, Jeffrey Spang, Brian Pietrosimone

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

Trial report in Journal of athletic training, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT03035994 (Effect of Altered Mechanical Loading on Lower Extremity Biomechanics and Biochemical Markers in Individuals With an Anterior Cruciate Ligament Reconstruction), which is not on this map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
2.5field-weighted citation impact, top 10% 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.

NCT03035994 nacompletednot on this map

Effect of Altered Mechanical Loading on Lower Extremity Biomechanics and Biochemical Markers in Individuals With an Anterior Cruciate Ligament Reconstruction

TypeinterventionalSponsorUniversity of North Carolina, Chapel HillRan2016 to 2017Enrolled30ConditionsAnterior Cruciate Ligament ReconstructionArmsReal-Time Biofeedback
3 · Its place in the literature

Who cites it

16 citing papers in PubMed, 21 citations in OpenAlex.

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  6. Bilateral waveform analysis of gait biomechanics presurgery to 12 months following ACL reconstruction compared to controls.Journal of orthopaedic research : official publication of the Orthopaedic Research Society · 2025
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  15. Linking Gait Biomechanics and Daily Steps After ACL Reconstruction.Medicine and science in sports and exercise · 2022
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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

9 authors at 4 institutions in 1 country.

Brittney A Luc-HarkeyMassachusetts General Hospital, Boston, MA.
Jason FranzJoint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, Raleigh.
Anthony C HackneyDepartment of Exercise and Sport Science, University of North Carolina at Chapel Hill.
J Troy BlackburnDepartment of Exercise and Sport Science, University of North Carolina at Chapel Hill.
Darin A PaduaDepartment of Exercise and Sport Science, University of North Carolina at Chapel Hill.
Todd SchwartzDepartment of Biostatistics, University of North Carolina at Chapel Hill.
Hope Davis-WilsonDepartment of Exercise and Sport Science, University of North Carolina at Chapel Hill.
Jeffrey SpangDepartment of Orthopaedics, MOTION Science Institute, University of North Carolina at Chapel Hill.
Brian PietrosimoneDepartment of Exercise and Sport Science, University of North Carolina at Chapel Hill.
University of North Carolina at Chapel Hill · USApplied Physical Sciences (United States) · USMassachusetts General Hospital · USNorth Carolina State University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

contextGait biomechanics are linked to biochemical changes that contribute to the development of posttraumatic knee osteoarthritis in individuals with anterior cruciate ligament reconstruction (ACLR). It remains unknown if modifying peak loading during gait using real-time biofeedback will result in acute biochemical changes related to cartilage metabolism.

objectiveTo determine if acutely manipulating peak vertical ground reaction force (vGRF) during gait influences acute changes in serum cartilage oligomeric matrix protein concentration (sCOMP) among individuals with ACLR.

designCrossover study. PATIENTS OR OTHER

participantsThirty individuals with unilateral ACLR participated (70% female, age = 20.43 ± 2.91 years old, body mass index = 24.42 ± 4.25, months post-ACLR = 47.83 ± 26.97). Additionally, we identified a subgroup of participants who demonstrated an increase in sCOMP after the control or natural loading condition (sCOMPCHANGE > 0 ng/mL, n = 22, 70% female, age = 20.32 ± 3.00 years old, body mass index = 24.73 ± 4.33, months post-ACLR = 47.27 ± 29.32). MAIN OUTCOME MEASURE(S): Serum was collected both prior to and immediately after each condition to determine sCOMPchange. INTERVENTION(S): All participants attended 4 sessions that involved 20 minutes of walking on a force-measuring treadmill consisting of a control condition (natural loading) followed by random ordering of 3 loading conditions with real-time biofeedback: (1) symmetric vGRF between limbs, (2) a 5% increase in vGRF (high loading) and (3) a 5% decrease in vGRF (low loading). A general linear mixed model was used to determine differences in sCOMPCHANGE between altered loading conditions and the control group in the entire cohort and the subgroup.

resultsThe sCOMPCHANGE was not different across loading conditions for the entire cohort (F3,29 = 1.34, P = .282). Within the subgroup, sCOMPCHANGE was less during high loading (1.95 ± 24.22 ng/mL, t21 = -3.53, P = .005) and symmetric loading (9.93 ± 21.45 ng/mL, t21 = -2.86, P = .025) compared with the control condition (25.79 ± 21.40 ng/mL).

conclusionsIncreasing peak vGRF during gait decreased sCOMP in individuals with ACLR who naturally demonstrated an increase in sCOMP after 20 minutes of walking. TRIAL REGISTRY: ClinicalTrials.gov (NCT03035994).

Indexed as

Anterior Cruciate Ligament ReconstructionAdolescentAdultAnterior Cruciate Ligament InjuriesBiofeedback, PsychologyBiomarkersBiomechanical PhenomenaCohort StudiesCross-Over StudiesFemaleGaitHumansKnee JointMaleWalkingYoung AdultBiomarkersbiomarkerscartilage oligomeric matrix proteinposttraumatic osteoarthritisvertical ground reaction force

Identifiers

PMID32966563
PMCPMC7594613
OpenAlexW3088320322

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.