Effects of Adequate Dietary Protein With Whey Protein, Leucine, and Vitamin D Supplementation on Sarcopenia in Elderly Subjects：An Open-label, Parallel-group Study
Overview
- Phase
- Not Applicable
- Intervention
- Not specified
- Conditions
- Sarcopenia
- Sponsor
- Far Eastern Memorial Hospital
- Enrollment
- 85
- Locations
- 1
- Primary Endpoint
- Handgrip strength
- Status
- Completed
- Last Updated
- 7 years ago
Overview
Brief Summary
Sarcopenia is defined as a syndrome characterized by decline of skeletal muscle mass and strength or an alteration in physical function. Although some studies showed nutritional supplementation alone might have health benefits for older sarcopenic patients, the results were inconsistent and remain controversial. The objective of this study was to evaluate if a sufficient protein diet including supplements with leucine-enriched whey protein and vitamin D can lead to better improvement than sufficient dietary protein alone in maintaining muscle mass and strength among sarcopenic elders.
Investigators
Chih-Chien Lin
Attending physician of the Family Medicine Department, Principal Investigator
Far Eastern Memorial Hospital
Eligibility Criteria
Inclusion Criteria
- •Older adults (≥ 65 years)
- •Subject has lower appendicular muscle mass index (AMMI) (\<7 kg/m\^2 in men; \<5.7 kg/m\^2 in women) using Bioelectrical impedance analysis (BIA, TANITA BC-418®, Tokyo, Japan)
- •Subject has lower handgrip strength (\<26 kg in men; \<18 kg in women) using dynamometer (CAMRY®, Zhongshan, Guangdong) or slowly gait speed (\<1 m/s)
Exclusion Criteria
- •Subject's life expectancy was shorter than 6 months
- •Nursing home resident
- •Subject has the history of kidney failure
- •Subject has the history of liver failure
- •Subject has the history of diabetes mellitus
- •Subject has resistance exercise habit.
Outcomes
Primary Outcomes
Handgrip strength
Time Frame: Change measures (baseline and 4 weeks, baseline and 12 weeks)
Hand dynamometer was used to measure handgrip strength. Subject was asked to sit in an upright position with the upper arm forming a virtually 90 degree angle with the forearm. Three consecutive measurements of grip strength obtained from both hands were recorded and average of the highest value was calculated as the maximum grip strength. The unit of handgrip strength was represented as kilogram.
AMMI(appendicular muscle mass index)
Time Frame: Change measures (baseline and 4 weeks, baseline and 12 weeks)
Bioelectrical impedance analysis was used to obtain appendicular muscle mass (AMM) and height. The unit of AMM and height were represented as kilogram and meter respectively. AMMI were calculated as AMM/height\^2 (kg/m\^2).
Gait speed
Time Frame: Change measures (baseline and 4 weeks, baseline and 12 weeks)
Asking the subjects to perform a 5-meter walk at their usual pace and measure how much second they could complete this distance, then the unit of gait speed was represented as m/s.