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Not yet recruitingNCT07490977Updated Mar 24, 2026

Cross-Education From Unilateral Strength and Balance Training in Older Adults With Bilateral Knee Osteoarthritis

An interventional study of 8-Week Unilateral Strength and Balance Program for the Less Affected Leg in Older Adults With Bilateral Knee Osteoarthritis and 8-Week Unilateral Balance Training Program for the Less Affected Leg in Older Adults With Bilateral Knee Osteoarthritis in Knee Osteoarthritis (OA), sponsored by University of Zagreb. Not yet recruiting at 1 site in Croatia. Open to participants aged 60 Years to 80 Years. Per ClinicalTrials.gov, last updated 2026-03-24.

Sponsored by University of Zagreb · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
45
Allocation
Randomized
Ages
60 Years to 80 Years
Sex
All
01

Study summary

Kinesitherapy is one of the main tools in the rehabilitation of knee osteoarthritis, but is often limited due to pain, reduced functionality, and fear of falling in older adults. This study will, through three sub-studies, examine the effects of unilateral training programs on strength, movement control, balance, and pain in the contralateral leg, as well as on functionality, fall risk, and kinesiophobia in older adults with bilateral knee osteoarthritis through three sub-studies. A total of 45 participants (aged 60-80 years) with bilateral knee osteoarthritis will be randomly assigned to one of three groups: 1. combined unilateral strength and balance training; 2. unilateral balance training; 3. unilateral strength training. Strength will be measured with maximal voluntary contraction, balance using a single leg stance test on an unstable surface, movement control with an active joint position reproduction test, and functionality using the six-minute walk test and the Western Ontario and McMaster Osteoarthritis Index questionnaire. Pain will be assessed with the Visual Analog Scale and the Intermittent and Constant Osteoarthritis Pain questionnaire, fall risk with the Timed Up and Go test and the Falls Efficacy Scale-International questionnaire, and kinesiophobia using the TAMPA questionnaire. This study will expand knowledge on cross-transfer and its effects on symptoms in the rehabilitation of older adults with bilateral knee osteoarthritis.

This research is a part of a doctoral thesis conducted under the supervision of assoc. prof. Tatjana Trošt, PhD.

02

Conditions studied

  • Knee Osteoarthritis (OA)
03

In context

Osteoarthritis, Knee

3,292 studies on the registry are indexed under Osteoarthritis, Knee; 623 are open to participants now.

This study's planned enrollment of 45 is below the median of 68 across 2,714 interventional studies indexed under Osteoarthritis, Knee.

Browse Osteoarthritis, Knee studies →

Lead sponsor

University of Zagreb is the lead sponsor of 71 studies on the registry; 14 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
60 Years to 80 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • age 60-80 years,
  • bilateral knee osteoarthritis of grade II-III according to the Kellgren-Lawrence classification

Exclusion criteria

Exclusion Criteria:

  • acute lower extremity injuries in the past year,
  • taking nonsteroidal anti-inflammatory drugs within the past month,
  • involvement in physical therapy within the past 6 months,
  • undergoing intra-articular injections and/or knee surgery within the past year,
  • rheumatoid arthritis, septic arthritis, uncontrolled diabetes, other systemic inflammatory and diseases, and severe cardiovascular, renal, and hepatic comorbidities
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Autoimmune disease

A condition in which the immune system attacks the body’s own tissues, such as rheumatoid arthritis, lupus, psoriasis, type 1 diabetes or inflammatory bowel disease.

Immunotherapy studies often leave out active autoimmune disease, and some name exceptions, such as thyroid disease on replacement hormone. Check the exceptions this study lists.

05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
45 participants (estimated)

Study arms

  • Experimental
    Unilateral strength and balance training group

    Other: 8-Week Unilateral Strength and Balance Program for the Less Affected Leg in Older Adults With Bilateral Knee Osteoarthritis

  • Experimental
    Unilateral balance training group

    Other: 8-Week Unilateral Balance Training Program for the Less Affected Leg in Older Adults With Bilateral Knee Osteoarthritis

  • Experimental
    Unilateral strength training group

    Other: 8-Week Unilateral Strength Training Program for the Less Affected Leg in Older Adults With Bilateral Knee Osteoarthritis

Interventions

  • Other8-Week Unilateral Strength and Balance Program for the Less Affected Leg in Older Adults With Bilateral Knee Osteoarthritis

    Participants perform unilateral exercises with the less affected leg, combining strength and balance training. Each session lasts 50 minutes, including warm-up, main exercises (15-20 min), and relaxation. The program consists of 24 sessions over 8 weeks.

  • Other8-Week Unilateral Balance Training Program for the Less Affected Leg in Older Adults With Bilateral Knee Osteoarthritis

    Participants perform unilateral balance exercises with the less affected leg. Each 50-minute session includes warm-up, 15-20 minutes of main balance exercises, and relaxation. The program lasts 8 weeks with 24 sessions.

  • Other8-Week Unilateral Strength Training Program for the Less Affected Leg in Older Adults With Bilateral Knee Osteoarthritis

    Participants perform unilateral strength exercises with the less affected leg. Each 50-minute session includes warm-up, 15-20 minutes of main strength exercises, and relaxation. The program lasts 8 weeks with 24 sessions.

06

What researchers measure

Primary outcomes

  1. Change from baseline in balance performance in older adults with bilateral knee osteoarthritis after 8 weeks of unilateral strength and/or balance training across all three intervention groups

    Time frame: From baseline (pre-intervention) to the end of the 8-week training program

07

Study locations

1 site
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Mar 24, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT07490977
Lead sponsor
University of Zagreb
Collaborators
University of Zagreb, The Faculty of Kinesiology
Responsible party
Lara Juriša (PhD Candidate, University of Zagreb) — Principal investigator
First posted
Mar 24, 2026
Start date
Sep 2026 (estimated)
Primary completion
Dec 2027 (estimated)
Completion
Dec 2027 (estimated)
Last update
Mar 24, 2026

Study contacts

Lara Juriša, PhD candidate
Contact
lara.jurisa@kif.unizg.hr
00385989165960
Assoc. Prof. Tatjana Trošt, PhD
Contact
tatjana.trost@kif.unizg.hr

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is not yet recruiting, as verified in May 2025. You cannot join it, but the record below documents what was studied.

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