About this trial
The investigators' pre-clinical study confirms the positive effects of combined treatment (VT + HMB) on reducing fat-to-lean tissue ratio, intramuscular fat infiltration and increasing muscle strength in sarcopenia animal model. The results showed that fat mass could be decreased by \~32%, while histology Oil Red O staining indicated a decrease of fat by almost 60%; in contrast, lean muscle mass increased by \~14%. On muscle strength, combined treatment increased twitch force, tetanic force and grip strength by \~30-66%. These in vivo results are very encouraging and the investigators should explore its potential in clinical translation. As VT and HMB supplement have been commercially available and their compliance rates are satisfactory, they can be translated to clinical application easily. The investigators' next step is to confirm its clinical efficacy, so that sarcopenia becomes a new indication of VT and HMB. The hypothesis is that combined treatment of VT and HMB can retard the progression of sarcopenia in human, in terms of muscle mass, muscle strength and performance.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Subjects aged 60 years or above
Subjects failed in AWGS algorithm
skeletal muscle mass by BIA (male at <7.0 kg/m², female at <5.7 kg/m²), and
handgrip strength (male at <28 kg, female at <18kg), and/or
Disqualifiers
Subjects with pathological bone diseases
Subjects with chronic inflammatory condition (e.g. rheumatoid arthritis)
Subjects with neurological problems
Subjects receiving regular exercise
Trial design
Parallel
Treatments tested in this trial
Low-magnitude High-frequency Vibration
Device0.3g, 35Hz, 20mins/day, at least 3 times/week
β-hydroxy β-methylbutyrate (HMB) supplement
Dietary supplementOral nutritional HMB supplement at 3g/day
Protein supplement
Dietary supplementDaily protein supplement intake
Treatment groups
Trial outcomes
Primary outcomes
Muscle strength-handgrip
Handgrip strength will be measured by a dynamometer on each hand of the subject.
Muscle performance-gait speed
Gait speed will be assessed by a 6-meter-walk test.
Secondary outcomes
Dual energy x-ray absortiometry (DXA)
Whole body muscle mass measurement
Biodex Balance System-LOS
Limits of stability will be recorded to evaluate the dynamic posture stability. Maximum scores will be 100 where the higher scores indicate better performance.
Biodex Balance System-OSI
Posture stability (Overall Stability Index) will be recorded. High scores indicate poorer balancing abillity.
Time-up-and-go test (TUG)
Time will be recorded for participants to rise from a chair, walk 3 meters, turn around, and walk back to the chair then sitting down
Sponsors and contacts
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Chinese University of Hong Kong
Lead sponsor
Abbott
Collaborator