Knee osteoarthritis Musculoskeletal Diseases Polyarthrosis
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: 1. Male and female patients aged 55 - 75 years 2. Advanced knee osteoarthritis (grade 3 or 4 knee osteoarthritis diagnosed arthroscopically within the last 2 years, or placed on the waiting list for knee replacement surgery with the indication of osteoarthritis within the last 12 months) 3. Ambulatory patients 4. Residing in the Greater Dublin area
Exclusion criteria
Exclusion criteria: 1. Medical co-morbidities that preclude an exercise program 2. Neurological disorder 3. Implanted electrical device 4. Uncontrolled hypertension 5. Anticoagulant therapy 6. Malignancy 7. Inflammatory arthritis 8. Prior ipsilateral knee replacement surgery or contra-lateral knee replacement surgery within the last 2 years 9. Recent participation in an exercise or strength training program 10. Recent participation in a similar study
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| 1. 36-item Short Form Health Survey (SF-36) and Western Ontario McMaster University Arthritis index (WOMAC) scores, measured at baseline, week 7 and week 13 2. Isometric quadriceps strength (peak torque at 60 degrees of knee flexion) measured bilaterally with a dynamometer, assessed at baseline, week 1 (end of familiarisation period), week 7 (end of training period) and week 13 (6 weeks post-training period) 3. Isokinetic strength at 60 degrees per second in knee extension and flexion measured bilaterally with a dynamometer, assessed at baseline, week 1 (end of familiarisation period), week 7 (end of training period) and week 13 (6 weeks post-training period) 4. Functional testing including a timed 25-metre walking test, a timed stair climbing test and a timed up/down seated test, assessed at baseline, week 1 (end of familiarisation period), week 7 (end of training period) and week 13 (6 weeks post-training period) 5. Quadriceps femoris cross-sectional area on MRI imaging, taken at baseline and week 7 | — |
Secondary
| Measure | Time frame |
|---|---|
| 1. Knee flexion and extension limits, both active and passive 2. Height and weight measurements, to determine body mass index 3. Physical activity level 4. Knee pain score immediately before and during all functional and strength testing 5. Vastus lateralis muscle biopsy analysis, taken at baseline and at week 7. Analysis of the muscle biopsy tissue will take place after all participants have completed week 13. 5.1. Key functional and structural protein content including myosin heavy chain 5.2. Gene expression associated with muscle hypertrophy (insulin-like growth factor 1 [IGF-1]) and atrophy (MAFbx and MURF-1) All secondary outcome measures except the muscle biopsies will be measured at baseline, week 1 (end of familiarisation period), week 7 (end of training period) and week 13 (6 weeks post-training period). | — |
Countries
Ireland