About this trial
This clinical trial aims to demonstrate that the use of a digital therapeutic device (exoDTx) in patients with sarcopenia is superior to self-exercise in terms of muscle strength improvement and safety.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Individuals diagnosed with sarcopenia according to both the European Working Group on Sarcopenia in Older People (EWGSOP) criteria and the Asian Working Group for Sarcopenia 2019 (AWGS 2019) criteria
Handgrip strength < 28 kg for men or < 18 kg for women
Five-times Sit-to-Stand Test time > 12 seconds without arm support
Skeletal Muscle Mass Index (SMI) < 7.0 kg/m² for men or < 5.4 kg/m² for women measured by DXA
Disqualifiers
Individuals with cognitive impairment, defined as a Mini-Mental State Examination (MMSE) score < 20, or those unable to participate due to cognitive decline
Individuals with an implanted cardiac pacemaker or other implanted electronic medical device
Individuals with uncontrolled cardiovascular disease despite appropriate medical management
Individuals who have undergone lower-limb surgery within the past 6 months and are unable to ambulate independently
Trial design
Parallel
Treatments tested in this trial
exoDTx
DeviceExperimental group (exoDTx): After baseline on-site training, participants perform personalized resistance exercises at home using a mobile app ≥3 times/week, 50 min/session, for 12 weeks (≥150 min/week). The program provides grip strength-based automatic intensity adjustment, exercise recording, feedback, and physician monitoring. Delivery: Nonpharmacological, non-invasive, home-based exercise program. The experimental group uses a mobile app; the control group uses educational materials. Initial instruction occurs on-site. Visits \& Monitoring: Screening/Baseline (week 0), In-treatment (weeks 4, 8), Post-treatment (week 12), and Follow-up (week 24).
Self-exercise (Educational Material)
BehavioralControl group (Self-exercise): No app is used. Participants perform the same exercise guided by QR code-based educational materials, ≥3 times/week, 50min/session, for 12 weeks, maintaining exercise logs without automatic adjustment or remote monitoring. Delivery: Non-pharmacological, non-invasive, homebased exercise program. The experimental group uses a mobile app; the control group uses educational materials. Initial instruction occurs on-site. Visits \& Monitoring: Screening/Baseline (week 0), In-treatment (weeks 4, 8), Post-treatment (week 12), and Follow-up (week 24).
Treatment groups
Trial outcomes
Primary outcomes
Change in peak knee extension strength (Nm) from baseline to 12 weeks
Between-group comparison of mean change in knee extensor strength measured by lower extremity dynamometer.
Secondary outcomes
Change in peak isometric knee extension strength (Nm) from baseline to 4, 8, and 24 weeks
To evaluate longitudinal changes in knee extensor muscle strength at weeks 4, 8, and 24 compared with baseline using an lower extremity dynamometer.
Change in body composition (skeletal muscle mass index, fat mass)
To evaluate changes in muscle and fat mass measured by dual-energy x-ray absorptiometry(DXA) or bioelectrical impedance analysis (BIA) after 12 weeks of intervention.
Change in Manual Muscle Test (MMT) scores of major limb muscles
To assess changes in muscle strength based on standardized MMT grading (0-5 scale) after 12 weeks of intervention..
Change in handgrip strength (kg) from baseline
To assess longitudinal changes in handgrip strength measured by hand dynamometer at weeks 4, 8, 12, and 24.
Sponsors and contacts
Click on the lead sponsor to view all of their trials.
Exosystems
Lead sponsor
The Catholic University of Korea
Collaborator