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Interventions to Enhance Quadriceps Output After ACLR

9. juli 2026 opdateret af: University of Wisconsin, Madison

Clinical Interventions to Acutely Enhance Quadriceps Output After Anterior Cruciate Ligament Reconstruction

The investigators are interested in determining what treatments are effective in reducing inhibition after anterior cruciate ligament (ACL) surgery and helping people increase quadriceps strength. Two interventions that are often used clinically are neuromuscular electrical stimulation (NMES) and vibration. This is a study of how effective these treatments are, whether they work the same for everyone, and if one is better than the other. 22 participants will be enrolled and on study for 2 to 3 weeks.

Studieoversigt

Status

Ikke rekrutterer endnu

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

After a screening visit, participants will be randomized to 2 intervention conditions over 2, 60-minute visits at least 1 week apart where they will complete:

  • a 5 minute low intensity warm-up on a stationary bike
  • a series of patient-reported outcomes surveys
  • a pre-intervention quadriceps performance assessment

  • the intervention condition, one each visit, either:

    • ~20 minutes of NMES while completing rehabilitation exercises, OR
    • ~20 minutes of hamstring muscle vibration
  • a post-intervention quadriceps performance assessment

The primary objective of the study is to characterize the acute effects of interventions designed to mitigate the influence of inhibition (NMES and hamstrings muscle vibration) on quadriceps muscle performance in people post-anterior cruciate ligament reconstruction (ACLR) who have significant potential to benefit from these interventions (e.g. less than 4 months post-surgery).

  • Specific Aim 1: To determine the acute effects of quadriceps NMES and hamstrings muscle vibration on quadriceps muscle performance in people 2-4 months post-ACLR
  • Specific Aim 2: To determine if individuals with signs of more pronounced neural inhibition (quantified via assessment of knee extensor torque steadiness) have greater responses to NMES and hamstrings muscle vibration

Hypothesis 1: Quadriceps muscle strength will increase in people 2-4 months post-ACLR after 20 minutes of quadriceps NMES or hamstrings muscle vibration. The magnitude of increase in strength will be similar for both interventions.

Hypothesis 2: Surgical limb knee extensor torque steadiness will be strongly positively correlated with changes in quadriceps strength after NMES or hamstrings muscle vibration. People with greater steadiness impairments will demonstrate greater acute increases in quadriceps strength.

Undersøgelsestype

Interventionel

Tilmelding (Anslået)

22

Fase

  • Ikke anvendelig

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiekontakt

Studiesteder

  • Forenede Stater
    • Wisconsin
      • Madison, Wisconsin, Forenede Stater, 53706
        • UW Health

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

  • Voksen

Tager imod sunde frivillige

Ingen

Beskrivelse

Inclusion Criteria:

  • Have undergone ACLR within the previous 4 months
  • Are at least 2 months post-ACLR

Exclusion Criteria:

  • A history of ACLR on both legs

  • Since the most recent ACLR:

    • secondary lower extremity surgery
    • leg or foot fracture
  • Unable to walk without an assistive device
  • Pain of greater than 5/10 during quadriceps strengthening exercises with the surgical limb
  • Cannot achieve 90 degrees of knee flexion with the surgical limb
  • People with contraindications to NMES
  • Anyone who had a previous skin reaction to NMES or attempted but could not tolerate NMES
  • Peripheral neuropathy or other neurological conditions

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Behandling
  • Tildeling: Randomiseret
  • Interventionel model: Crossover opgave
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: NMES then Vibration
Enhed: NMES
The thigh of the surgical leg will be cleaned with isopropyl alcohol. 2.75" x 5" NMES electrodes (Dura-Stick Plus, Chattanooga, DJO Global, Dallas, TX) will be adhered to the proximal and distal aspects of the quadriceps muscles. An FDA-approved portable neuromuscular electrical stimulator (Empi Continuum, DJO Global, Dallas, TX) will be utilized to deliver a biphasic square wave pulse (frequency 75 Hz, pulse width 300 µs) to the quadriceps of the surgical limb. Participants will control both the amplitude of current delivered (0-100 mA) and the on/off timing of the stimulation via a wired control switch. Participants will complete common post-ACLR rehabilitation exercises while NMES is delivered (total time for exercises is approximately 20 minutes).
Andre navne:
  • Empi Continuum
Enhed: Vibration
Participants will sit in a comfortable position on a treatment plinth with knees flexed to ~30°, hips flexed between 30-60°, and the back supported. The back of the thighs will rest on the vibration pads of a commercial vibration device (Thumper Versa Pro Massager, (Thumper Massager Inc., Markham, Ontario, CA). Participants will sit at rest for 20 minutes while the vibration device provides a 30 Hz vibration with an amplitude of ~6 mm.
Andre navne:
  • Thumper Versa Pro
Eksperimentel: Vibration then NMES
Enhed: NMES
The thigh of the surgical leg will be cleaned with isopropyl alcohol. 2.75" x 5" NMES electrodes (Dura-Stick Plus, Chattanooga, DJO Global, Dallas, TX) will be adhered to the proximal and distal aspects of the quadriceps muscles. An FDA-approved portable neuromuscular electrical stimulator (Empi Continuum, DJO Global, Dallas, TX) will be utilized to deliver a biphasic square wave pulse (frequency 75 Hz, pulse width 300 µs) to the quadriceps of the surgical limb. Participants will control both the amplitude of current delivered (0-100 mA) and the on/off timing of the stimulation via a wired control switch. Participants will complete common post-ACLR rehabilitation exercises while NMES is delivered (total time for exercises is approximately 20 minutes).
Andre navne:
  • Empi Continuum
Enhed: Vibration
Participants will sit in a comfortable position on a treatment plinth with knees flexed to ~30°, hips flexed between 30-60°, and the back supported. The back of the thighs will rest on the vibration pads of a commercial vibration device (Thumper Versa Pro Massager, (Thumper Massager Inc., Markham, Ontario, CA). Participants will sit at rest for 20 minutes while the vibration device provides a 30 Hz vibration with an amplitude of ~6 mm.
Andre navne:
  • Thumper Versa Pro

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Tidsramme
Change in knee extensor peak torque production
Tidsramme: measured pre-intervention and post-intervention during each of 2, 1-hour study visits, data collection complete within 3 weeks
measured pre-intervention and post-intervention during each of 2, 1-hour study visits, data collection complete within 3 weeks

Sekundære resultatmål

Resultatmål
Tidsramme
Change in knee extensor torque steadiness
Tidsramme: measured pre-intervention and post-intervention during each of 2, 1-hour study visits, data collection complete within 3 weeks
measured pre-intervention and post-intervention during each of 2, 1-hour study visits, data collection complete within 3 weeks

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

University of Wisconsin, Madison

Efterforskere

  • Ledende efterforsker: Daniel Cobian, DPT, PhD, University of Wisconsin, Madison

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Anslået)

1. august 2026

Primær færdiggørelse (Anslået)

1. august 2027

Studieafslutning (Anslået)

1. august 2027

Datoer for studieregistrering

Først indsendt

24. juni 2026

Først indsendt, der opfyldte QC-kriterier

24. juni 2026

Først opslået (Faktiske)

30. juni 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

13. juli 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

9. juli 2026

Sidst verificeret

1. juni 2026

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Andre undersøgelses-id-numre

  • 2026-0153
  • Protocol Version 10/24/25 (Anden identifikator: UW Madison)
  • SMPH | Ortho and Rehab (Anden identifikator: UW Madison)

Plan for individuelle deltagerdata (IPD)

Planlægger du at dele individuelle deltagerdata (IPD)?

INGEN

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

Studerer et amerikansk FDA-reguleret lægemiddelprodukt

Ingen

Studerer et amerikansk FDA-reguleret enhedsprodukt

Ja

produkt fremstillet i og eksporteret fra U.S.A.

Ja

Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .

Kliniske forsøg med ACL

Kliniske forsøg med NMES

Søg i lignende forsøg

Sponsorer og samarbejdspartnere

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Narkotikainterventioner

CROs by country

CROs in Netherlands

Betingelser

Sjældne sygdomme

Narkotikainterventioner

Kosttilskud

Sponsor / samarbejdspartnere

Placeringer

Abonner