NCT02931058

Brief Summary

The trial investigates the efficacy of knee-extension exercise prior to total knee replacement. The participants are randomly allocated to one of three exercise dosages. There is no control group.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
140

participants targeted

Target at P50-P75 for not_applicable

Timeline
Completed

Started Oct 2016

Longer than P75 for not_applicable

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

October 1, 2016

Completed
2 days until next milestone

First Submitted

Initial submission to the registry

October 3, 2016

Completed
9 days until next milestone

First Posted

Study publicly available on registry

October 12, 2016

Completed
3.3 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

February 1, 2020

Completed
24 days until next milestone

Study Completion

Last participant's last visit for all outcomes

February 25, 2020

Completed
Last Updated

April 26, 2022

Status Verified

April 1, 2022

Enrollment Period

3.3 years

First QC Date

October 3, 2016

Last Update Submit

April 19, 2022

Conditions

Keywords

Knee-extension exerciseQuadriceps exerciseKnee osteoarthritisExercise adherenceDose-response relationshipPrehabilitation

Outcome Measures

Primary Outcomes (1)

  • Isometric knee-extension strength at 60 degrees knee flexion measured as Nm/kg body mass

    The measurement will be assessed using a computerized strength chair (Good Strength Chair, Metitur Oy, Jyvaskyla, Finland).

    Change from 1) baseline to 2) after 12 weeks of exercise/just before surgery

Secondary Outcomes (8)

  • Isometric knee-extension strength at 60 degrees knee flexion measured as Nm/kg body mass

    Change from 1) baseline to 3) at hospital discharge (3-8 days after surgery), and change from 1) baseline to 4) three months after surgery

  • 6 min walk test for distance (6MWT)

    Change from 1) baseline to 2) after 12 weeks of exercise/just before surgery, and change from 1) baseline to 3) at hospital discharge (3-8 days after surgery), and change from 1) baseline to 4) three months after surgery

  • Stair climb test (SCT)

    Change from 1) baseline to 2) after 12 weeks of exercise/just before surgery, and change from 1) baseline to 3) at hospital discharge (3-8 days after surgery), and change from 1) baseline to 4) three months after surgery

  • Knee Osteoarthritis Outcome Score (KOOS)

    Change from 1) baseline to 2) after 12 weeks of exercise/just before surgery, and change from 1) baseline to 3) at hospital discharge (3-8 days after surgery), and change from 1) baseline to 4) three months after surgery

  • Oxford Knee Score (OKS)

    Change from 1) baseline to 2) after 12 weeks of exercise/just before surgery, and change from 1) baseline to 3) at hospital discharge (3-8 days after surgery), and change from 1) baseline to 4) three months after surgery

  • +3 more secondary outcomes

Other Outcomes (1)

  • Adverse events

    Assessment at 2) after 12 weeks of exercise/just before surgery, 3) at hospital discharge (3-8 days after surgery) and 4) three months after surgery

Study Arms (3)

Group 2

ACTIVE COMPARATOR

Two knee-extension exercise sessions per week. Each exercise session comprises a single strength training exercise; knee-extension, which is performed in 3 sets with 12 RM repetitions in each set. The knee-extension resistance training exercise is performed with an elastic exercise band.

Other: Two knee-extension exercise sessions per week.

Group 4

ACTIVE COMPARATOR

Four knee-extension exercise sessions per week. Each exercise session comprises a single strength training exercise; knee-extension, which is performed in 3 sets with 12 RM repetitions in each set. The knee-extension resistance training exercise is performed with an elastic exercise band.

Other: Four knee-extension exercise sessions per week.

Group 6

ACTIVE COMPARATOR

Six knee-extension exercise sessions per week. Each exercise session comprises a single strength training exercise; knee-extension, which is performed in 3 sets with 12 RM repetitions in each set. The knee-extension resistance training exercise is performed with an elastic exercise band.

Other: Six knee-extension exercise sessions per week.

Interventions

Each exercise session comprises a single strength training exercise; knee-extension, which is performed in 3 sets with 12 RM repetitions in each set. The knee-extension resistance training exercise is performed with an elastic exercise band.

Group 2

Each exercise session comprises a single strength training exercise; knee-extension, which is performed in 3 sets with 12 RM repetitions in each set. The knee-extension resistance training exercise is performed with an elastic exercise band.

Group 4

Each exercise session comprises a single strength training exercise; knee-extension, which is performed in 3 sets with 12 RM repetitions in each set. The knee-extension resistance training exercise is performed with an elastic exercise band.

Group 6

Eligibility Criteria

Age50 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Patient is a possible candidate for a primary TKA due to knee osteoarthritis
  • Patient is eligible for home-based quadriceps exercise
  • Patient has an age ≥ 50 years
  • Patient is a possible candidate for primary unilateral TKA, based on all the below terms:
  • Knee pain \>3 (Numeric Rating Scale) in the last week
  • Kellgren-Lawrence classification grade ≥2
  • Oxford Knee Score \<30
  • Patient is resident in one of the three municipalities (København, Hvidovre or Brøndby) involved in the trial
  • Patient is able to speak and understand Danish

You may not qualify if:

  • Exercise is contra-indicated for the patient
  • Patient has a neurological disorder
  • Patient has a diagnosed systemic disease (ASA score ≥ 3)
  • Patients with terminal illness
  • Patient has severe bone deformity demanding use of nonstandard implants
  • Weekly alcohol consumption above national recommendations (\>7 units women, \>14 units men)

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Clinical Research Centre, Amager Hvidovre hospital

Hvidovre, 2650, Denmark

Location

Related Publications (3)

  • Husted RS, Troelsen A, Husted H, Gronfeldt BM, Thorborg K, Kallemose T, Rathleff MS, Bandholm T. Knee-extensor strength, symptoms, and need for surgery after two, four, or six exercise sessions/week using a home-based one-exercise program: a randomized dose-response trial of knee-extensor resistance exercise in patients eligible for knee replacement (the QUADX-1 trial). Osteoarthritis Cartilage. 2022 Jul;30(7):973-986. doi: 10.1016/j.joca.2022.04.001. Epub 2022 Apr 9.

  • Husted RS, Bandholm T, Rathleff MS, Troelsen A, Kirk J. Perceived facilitators and barriers among physical therapists and orthopedic surgeons to pre-operative home-based exercise with one exercise-only in patients eligible for knee replacement: A qualitative interview study nested in the QUADX-1 trial. PLoS One. 2020 Oct 23;15(10):e0241175. doi: 10.1371/journal.pone.0241175. eCollection 2020.

  • Husted RS, Troelsen A, Thorborg K, Rathleff MS, Husted H, Bandholm T. Efficacy of pre-operative quadriceps strength training on knee-extensor strength before and shortly following total knee arthroplasty: protocol for a randomized, dose-response trial (The QUADX-1 trial). Trials. 2018 Jan 18;19(1):47. doi: 10.1186/s13063-017-2366-9.

Related Links

MeSH Terms

Conditions

Osteoarthritis, Knee

Condition Hierarchy (Ancestors)

OsteoarthritisArthritisJoint DiseasesMusculoskeletal DiseasesRheumatic Diseases

Study Officials

  • Thomas Bandholm, PhD

    Clinical Research Center, Hvidovre University Hospital

    STUDY DIRECTOR
  • Rasmus S Husted, MSc., PT.

    Clinical Research Center, Hvidovre University Hospital

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
SINGLE
Who Masked
OUTCOMES ASSESSOR
Purpose
TREATMENT
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
PhD, MSc., PT.

Study Record Dates

First Submitted

October 3, 2016

First Posted

October 12, 2016

Study Start

October 1, 2016

Primary Completion

February 1, 2020

Study Completion

February 25, 2020

Last Updated

April 26, 2022

Record last verified: 2022-04

Data Sharing

IPD Sharing
Will share

Available IPD Datasets

Study Protocol Access
Clinical Study Report Access

Locations