The effectiveness of E-health rehabilitation for patients with knee osteoarthritis

ISRCTN ISRCTN28185135
DOI https://doi.org/10.1186/ISRCTN28185135
ClinicalTrials.gov (NCT) Nil known
Clinical Trials Information System (CTIS) Nil known
Protocol serial number Nil known
Sponsor Scientific Research Committee of Al-Baha Health Cluster
Funder Investigator initiated and funded
Submission date
31/10/2025
Registration date
04/11/2025
Last edited
05/11/2025
Recruitment status
Not yet recruiting
Overall study status
Ongoing
Condition category
Musculoskeletal Diseases
Prospectively registered
Protocol
Statistical analysis plan
Results
Individual participant data
Record updated in last year

Plain English summary of protocol

Background and study aims
This study aims to test whether a telerehabilitation program using a smartphone app can improve muscle strength, pain, physical performance, and adherence to exercise among people with knee osteoarthritis (KOA). Traditional home exercise programs are effective but often suffer from poor long-term adherence. Using technology like a smartphone app may help patients follow their programs more consistently through video demonstrations, reminders, and therapist communication.

Who can participate?
Adults aged 40–70 years who have been diagnosed with grade II or III knee osteoarthritis for at least 6 months, have mild to moderate pain (rated 4–7 on a 0–10 scale), can walk without assistance, can read Arabic, and can use a smartphone.

What does the study involve?
Participants will be randomly assigned to one of two groups:
App-based group: Use a smartphone application providing resistance exercises with videos, reminders, and therapist feedback.
Paper-based group: Receive the same exercises in a printed booklet.
Both groups will perform the exercises three times per week for 6 weeks. Assessments will take place before and after the 6-week program, including tests for pain, muscle strength, physical function, and exercise adherence.

What are the possible benefits and risks of participating?
Participants may experience less pain, stronger muscles, better physical performance, and improved confidence in managing their condition. Risks are minimal but may include temporary discomfort or muscle soreness after exercise.

Where is the study run from?
The study will be conducted at Al-Aqiq General Hospital in Al-Baha, Saudi Arabia.

When is the study starting and how long is it expected to run for?
December 2024 to June 2026

Who is funding the study?
Investigator initiated and funded

Who is the main contact?
Dr Rawan Aldhabi, raldhabi@kau.edu.sa

Contact information

Dr Rawan Aldhabi
Principal investigator

Department of Physical Therapy
Faculty of Medical Rehabilitation Sciences
King Abdulaziz University
PO Box 80324
Jeddah
21589
Saudi Arabia

ORCiD logoORCID ID 0009-0003-1178-7515
Email raldhabi@kau.edu.sa
Dr Majed Albadi
Scientific

Department of Physical Therapy
Faculty of Medical Rehabilitation Sciences
King Abdulaziz University
PO Box 80324
Jeddah
21589
Saudi Arabia

ORCiD logoORCID ID 0000-0002-8126-1186
Email malbadi@kau.edu.sa
Mrs Shuruq Azhar
Public

Physical Therapy
Al Aqiq General Hospital
Albaha
65779
Saudi Arabia

Email Shuruqazhar@gmail.com

Study information

Primary study designInterventional
Study designinterventional single-blinded randomized controlled trial
Secondary study designRandomised controlled trial
Study type Participant information sheet
Scientific titleEffectiveness of telerehabilitation-based resistance exercise using a smartphone application in improving muscle strength, pain, physical performance, and adherence among patients with knee osteoarthritis: a randomized controlled trial
Study objectivesPrincipal Objective:
To evaluate the effectiveness of telerehabilitation-based resistance exercises delivered through a smartphone app compared to paper-based exercises in improving muscle strength, pain, physical performance, and adherence in patients with knee osteoarthritis.

Hypotheses:
1. The smartphone app–based telerehabilitation program will lead to greater improvements in muscle strength compared to the paper-based program.
2. The app-based program will reduce pain and improve physical performance more effectively.
3. The app-based program will enhance adherence to exercise by increasing self-efficacy and motivation.
Ethics approval(s)

Approved 09/12/2024, Scientific Research Committee at Albaha Health Cluster (6720 South Road, Building 3716, Albaha, 65784, Saudi Arabia; +966 (0)114579300; info@shc.gov.sa), ref: KFH/IRB0901202024/7

Health condition(s) or problem(s) studiedKnee osteoarthritis (KOA)
InterventionParticipants eligible for the study will be randomly assigned in a 1:1 ratio to either the intervention group (app-based home exercise program) or the control group (paper-based home exercise program) using a computer-generated block randomization method with variable block sizes to ensure balanced allocation. Allocation will be concealed using sequentially numbered, opaque sealed envelopes prepared by an independent researcher.

App-based group: Use a smartphone application providing resistance exercises with videos, reminders, and therapist feedback.
Paper-based group: Receive the same exercises in a printed booklet.

Both groups will perform the exercises three times per week for 6 weeks. Assessments will take place before and after the 6-week program, including tests for pain, muscle strength, physical function, and exercise adherence.
Intervention typeBehavioural
Primary outcome measure(s)

1. Pain is measured using the Arabic Numeric Pain Rating Scale (ANPRS) at baseline and 6 weeks post-intervention
2. Osteoarthritis symptoms, including pain, stiffness, and physical function, are measured using the Arabic version of the WOMAC at baseline and 6 weeks post-intervention
3. Quadriceps muscle strength is measured using a hand-held dynamometer (HHD, microFET®2) at baseline and 6 weeks post-intervention

Key secondary outcome measure(s)

1. Exercise adherence is measured using a self-reported exercise logbook, with adherence ratio calculated weekly over 6 weeks
2. Exercise self-efficacy is measured using the Arabic Exercise Self-Efficacy Scale (ESES-A) at baseline and 6 weeks post-intervention
3. Lower-limb functional strength is measured using the 30-Second Chair Stand Test (30 CST) and Five-Times Sit-to-Stand Test (FTSST) at baseline and 6 weeks post-intervention
4. Dynamic balance and mobility are measured using the Timed-Up and Go (TUG) test at baseline and 6 weeks post-intervention

Completion date01/06/2026

Eligibility

Participant type(s)Patient
Age groupAdult
Lower age limit40 Years
Upper age limit70 Years
SexAll
Target sample size at registration40
Key inclusion criteria1. Adults aged 40–70 years
2. Diagnosed with mild-to-moderate KOA
3. Able to use a smartphone
4. Able to perform resistance exercises independently
Key exclusion criteria1. Severe KOA or knee surgery in the past 6 months
2. Neurological or musculoskeletal disorders affecting lower limbs
3. Cognitive impairment or inability to follow instructions
Date of first enrolment15/11/2025
Date of final enrolment01/03/2026

Locations

Countries of recruitment

  • Saudi Arabia

Study participating centre

Al-Aqiq General Hospital
3400, Al Aqiq Saudi Arabia
Albaha
65779
Saudi Arabia

Results and Publications

Individual participant data (IPD) Intention to shareYes
IPD sharing plan summaryAvailable on request
IPD sharing planIndividual participant data (IPD) that underlie the results reported in this study will be made available upon reasonable request from the Principal Investigator (Dr Rawan Aldhabi; Raldhabi@kau.edu.sa)

Study outputs

Output type Details Date created Date added Peer reviewed? Patient-facing?
Participant information sheet Participant information sheet 11/11/2025 11/11/2025 No Yes

Editorial Notes

05/11/2025: The sponsor details were changed.
31/12/2025: Study's existence confirmed by the Scientific Research Committee at Albaha Health Cluster.