About this trial
The investigators aimed to examine if β-hydroxy-β-methylbutyrate (HMB) supplementation enhances the effects of exercise on muscle mass, physical performance and insulin resistance and observe potential residual effects in older diabetes with low muscle mass, and to find the optimal treatment plan.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Aged 60-80 ;
Diagnosis of T2DM
Low muscle mass: met a reference value for low muscle mass defined by the Asian Working Group for Sarcopenia (AWGS) criteria with skeletal muscle index <5.7 kg/m2 for women and <7.0 kg/m2 for men
Disqualifiers
Individuals who had an organic disease of the nervous system;
Who were restricted from engaging in exercise by a medical doctor;
Who was unconscious and unable to complete the questionnaire;
Who used other supplementations for muscle mass gain;
Trial design
Factorial
Treatments tested in this trial
HMB
Dietary supplementParticipants were instructed to take active products including 3000 mg calcium-HMB per day
Exercise
BehavioralParticipants allocated to the exercise programs were provided 45 min of supervised sessions on 2 nonconsecutive days per week
Placebo
Dietary supplementParticipants were instructed to take active products including equal in quality resistant dextrin per day
Education
Other interventionParticipants were given health education and educational manuals
Treatment groups
Trial outcomes
Primary outcomes
muscle mass
Body composition including muscle mass was measured using a segmental multifrequency bioelectrical impedance device (Inbody)
Handgrip strength
Handgrip strength was measured using a handheld Smedley-type dynamometer.
5-repetition sit-to-stand time
Participants folded their arms across their chests and were instructed to stand-up completely and make firm contact when sitting. Timing began on the command "go" and ceased when the participants sat after the fifth stand-up. Participants were allowed a practice trial of 2 repetitions before the timing of 2 test trials of 5 repetitions.
Secondary outcomes
insulin resistance index
Homeostatic Model Assessment for Insulin Resistance (HOMA-IR) was calculated as follow: HOMA-IR=(Fasting Insulin (μU/mL)×Fasting Glucose (mg/dL))/405
Locations
Sponsors and contacts
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Wu Shangling
Lead sponsor
First Affiliated Hospital, Sun Yat-Sen University
Sponsor institution
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