Effect of Altered Mechanical Loading in ACLR
Effect of Altered Mechanical Loading on Lower Extremity Biomechanics and Biochemical Markers in Individuals With an Anterior Cruciate Ligament Reconstruction
Studie Overzicht
Toestand
Toestand
Conditie
Conditie
Interventie / Behandeling
Interventie / Behandeling
Gedetailleerde beschrijving
Studietype
Studietype
Inschrijving (Werkelijk)
Inschrijving
Fase
Fase
- Niet toepasbaar
Deelname Criteria
Geschiktheidscriteria
Geschiktheidscriteria
Leeftijden die in aanmerking komen voor studie
Accepteert gezonde vrijwilligers
Geslachten die in aanmerking komen voor studie
Beschrijving
Inclusion Criteria:
- Have a history of a primary, unilateral ACLR using either a hamstring or patellar tendon autograft, cleared by a physical for full return to physical activity with no limitations, and participate in at least 30 minutes of physical activity 3 times per week
Exclusion Criteria:
- History of injury to either leg, other than ACLR (e.g. ankle sprain, muscle strain), within 6 months prior to participation in the study, history of lower extremity surgery other than ACLR, history of osteoarthritis or current symptoms related to knee osteoarthritis (e.g. pain, swelling, stiffness), currently pregnant, or planning to become pregnant while enrolled in the study, cardiovascular restrictions that limit the participant's ability to participate in physical activity.
Studie plan
Hoe is de studie opgezet?
Ontwerpdetails
- Primair doel: Fundamentele wetenschap
- Toewijzing: Gerandomiseerd
- Interventioneel model: Crossover-opdracht
- Masker: Enkel
Aantal wapens
Wapens en interventies
Deelnemersgroep / ArmDeelnemersgroep / Arm |
Interventie / BehandelingInterventie / Behandeling |
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Experimenteel: Overloading
Participants will walk on a force-instrumented treadmill for 20 minutes and will be provided visual biofeedback consisting of bilateral vertical ground reaction force.
A target will be placed at 10% greater than the participant's baseline vertical ground reaction force.
Participants will be asked to alter their walking gait in an attempt to reach the target line with each step.
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A custom written MatLab script will sample bilateral peak vertical ground reaction forces and display the magnitude in real time on a screen placed in front of the participant.
A target line will be placed in the middle of the screen which corresponds to one of the three loading conditions.
Participants will be instructed to alter their movement in an attempt to match each limb's vertical ground reaction force to the target line.
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Experimenteel: Underloading
Participants will walk on a force-instrumented treadmill for 20 minutes and will be provided visual biofeedback consisting of bilateral vertical ground reaction force.
A target will be placed at 10% lower than the participant's baseline vertical ground reaction force.
Participants will be asked to alter their walking gait in an attempt to reach the target line with each step.
|
A custom written MatLab script will sample bilateral peak vertical ground reaction forces and display the magnitude in real time on a screen placed in front of the participant.
A target line will be placed in the middle of the screen which corresponds to one of the three loading conditions.
Participants will be instructed to alter their movement in an attempt to match each limb's vertical ground reaction force to the target line.
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Experimenteel: Average
Participants will walk on a force-instrumented treadmill for 20 minutes and will be provided visual biofeedback consisting of bilateral vertical ground reaction force.
A target will be placed at the average of each participant's baseline vertical ground reaction force between limbs.
Participants will be asked to alter their walking gait in an attempt to reach the target line with each step.
|
A custom written MatLab script will sample bilateral peak vertical ground reaction forces and display the magnitude in real time on a screen placed in front of the participant.
A target line will be placed in the middle of the screen which corresponds to one of the three loading conditions.
Participants will be instructed to alter their movement in an attempt to match each limb's vertical ground reaction force to the target line.
|
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Geen tussenkomst: Control
Participants will walk for 20 minutes on a force-instrumented treadmill and will not be provided biofeedback.
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Wat meet het onderzoek?
Primaire uitkomstmaten
Primaire uitkomstmaten
Uitkomstmaat |
Tijdsspanne |
|---|---|
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Difference in acquisition as measured in root mean square error (RMSE) between loading conditions
Tijdsspanne: Change in acquisition over 20 minute intervention
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Change in acquisition over 20 minute intervention
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Difference in joint loading as measured in peak vertical ground reaction force normalized to body weight (xBW) between loading conditions
Tijdsspanne: Change in joint loading over 20 minute intervention
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Change in joint loading over 20 minute intervention
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Difference in cartilage turnover as measured in serum concentration of cartilage oligomeric matrix protein (pg/mL) between loading conditions
Tijdsspanne: Chance in cartilage turnover over 20 minute intervention
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Chance in cartilage turnover over 20 minute intervention
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Medewerkers en onderzoekers
Sponsor
Sponsor
Onderzoekers
Onderzoekers
- Hoofdonderzoeker: Brian Pietrosimone, PhD, University of North Carolina, Chapel Hill
Publicaties en nuttige links
Algemene publicaties
- Luc-Harkey BA, Franz J, Hackney AC, Blackburn JT, Padua DA, Schwartz T, Davis-Wilson H, Spang J, Pietrosimone B. Immediate Biochemical Changes After Gait Biofeedback in Individuals With Anterior Cruciate Ligament Reconstruction. J Athl Train. 2020 Oct 1;55(10):1106-1115. doi: 10.4085/1062-6050-0372.19.
- Luc-Harkey BA, Franz JR, Blackburn JT, Padua DA, Hackney AC, Pietrosimone B. Real-time biofeedback can increase and decrease vertical ground reaction force, knee flexion excursion, and knee extension moment during walking in individuals with anterior cruciate ligament reconstruction. J Biomech. 2018 Jul 25;76:94-102. doi: 10.1016/j.jbiomech.2018.05.043. Epub 2018 Jun 15.
Studie record data
Bestudeer belangrijke data
Studie start
Studie start
Primaire voltooiing (Werkelijk)
Primaire voltooiing
Studie voltooiing (Werkelijk)
Studie voltooiing
Studieregistratiedata
Eerst ingediend
Eerst ingediend
Eerst ingediend dat voldeed aan de QC-criteria
Eerst ingediend dat voldeed aan de QC-criteria
Eerst geplaatst (Schatting)
Eerst geplaatst
Updates van studierecords
Laatste update geplaatst (Werkelijk)
Laatste update geplaatst
Laatste update ingediend die voldeed aan QC-criteria
Laatste update ingediend die voldeed aan QC-criteria
Laatst geverifieerd
Laatst geverifieerd
Meer informatie
Termen gerelateerd aan deze studie
Andere studie-ID-nummers
Andere studie-ID-nummers
- 16-0409
Plan Individuele Deelnemersgegevens (IPD)
Bent u van plan om gegevens van individuele deelnemers (IPD) te delen?
Informatie over medicijnen en apparaten, studiedocumenten
Bestudeert een door de Amerikaanse FDA gereguleerd geneesmiddel
Bestudeert een door de Amerikaanse FDA gereguleerd apparaatproduct
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