Mixed
A 13-week intervention of a vitamin D and leucine-enriched whey protein nutritional supplement significantly increases appendicular muscle mass and improves lower-extremity function (chair-stand time) in sarcopenic older adults, independent of exercise.
For older adults with sarcopenia who cannot or do not exercise, consuming a specific nutritional supplement twice daily (containing whey protein, leucine, and vitamin D) for 13 weeks can significantly increase muscle mass and improve leg strength (measured by chair-stand time). This offers a practical, non-exercise-based strategy to maintain mobility and independence.
This 13-week intervention of a vitamin D and leucine-enriched whey protein oral nutritional supplement resulted in improvements in muscle mass and lower-extremity function among sarcopenic older adults.
Why this rating
Randomized, double-blind, placebo-controlled trial with a robust sample size (n=380) and independent statistical verification, though limited to 13 weeks.
Source
Effects of a Vitamin D and Leucine-Enriched Whey Protein Nutritional Supplement on Measures of Sarcopenia in Older Adults, the PROVIDE Study: A Randomized, Double-Blind, Placebo-Controlled Trial
Jürgen M. Bauer et al. · Journal of the American Medical Directors Association · 2015
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