I’m not ready to write my conclusions yet, but the medical research shows protein supplementation with resistance exercises is important for the elderly (yes, I am). Protein in combination with resistance exercises can reverse some of the wasting of muscle we experience.
“Effects of protein supplementation combined with resistance exercise on body composition and physical function in older adults: a systematic review and meta-analysis” The American Journal of Clinical Nutrition, Volume 106, Issue 4, 1 October 2017, pp 1078–1091 https://academic.oup.com/ajcn/article/106/4/1078/4651887( Because this is a review article, the protein supplement varied by article. The types of PS included whey protein, leucine, casein, milk protein, and the leucine metabolite β-hydroxy β-methylbutyrate. The protein sources for the PS differed among the included trials, comprising milk-based beverages, a whey protein and essential amino acid combination, fortified milk, milk protein concentrate, and dairy delivered through diet.)
“Effect of exercise and nutritional supplementation on health-related quality of life and mood in older adults: the VIVE2 randomized controlled trial” BMC Geriatrics. 2018; 18: 286. [BioMed Central] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6249766/ (The nutritional supplement provided 150 kcal, 20 g of whey protein, 800 IU vitamin D and a combination of vitamins and minerals, as previously described.)
“Nutritional Supplementation With Physical Activity Improves Muscle Composition in Mobility-Limited Older Adults, The VIVE2 Study: A Randomized, Double-Blind, Placebo-Controlled Trial. The Journals of Gerontology: Series A, Volume 73, Issue 1, 1 January 2018” https://www.ncbi.nlm.nih.gov/pubmed/28977347, https://academic.oup.com/biomedgerontology/article/73/1/95/4034773 [Oxford] (“daily nutritional supplement (150 kcal, 20 g whey protein, 800 IU vitamin D, 119 mL beverage)”
In the discussions and conclusions all suggested that protein supplement combined with resistance exercises were beneficial for the elderly. Then the question becomes what kind of supplement? Whey? Soy? Animal based? Plant? These studies seemed to all use whey.
“Protein quality as determined by the Digestible Indispensable Amino Acid Score: evaluation of factors underlying the calculation” Nutrition Review. 2016 Sep; 74(9): 584–599. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6322793/ Extensive analysis of IAA. Digestible Indispensable Amino Acid (DIAA),
“Collagen peptide supplementation in combination with resistance training improves body composition and increases muscle strength in elderly sarcopenic men: a randomised controlled trial” British Journal of Nutrition. 2015 Oct 28; 114(8): 1237–1245 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4594048/ (Used collagen peptide, The product was provided by GELITA AG (BODYBALANCE™). The amino acid composition of the collagen peptides is shown in Table 1.)
Will update as I find them.
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