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Whey Protein Supplementation in Older Adults With Type 2 Diabetes Undergoing a Resistance Training Program: A
Celine de Carvalho Furtado1, Giovana Jamar2, Alan Carlos Brisola Barbosa1
1Programa de Pós-Graduação Interdisciplinar em Ciências da Saúde, Federal University of São Paulo, Santos, SP, Brazil.
Journal of Aging and Physical Activity
|August 30, 2024
Summary
Whey protein supplementation did not significantly improve muscle strength or glycemic control in older adults with type 2 diabetes. Resistance training alone was effective in maintaining muscle mass and strength.
Area of Science:
- Gerontology
- Nutritional Science
- Endocrinology
Background:
- Older adults with type 2 diabetes are at risk for sarcopenia and muscle weakness.
- Glycemic control and muscle health are critical for managing type 2 diabetes in this population.
Purpose of the Study:
- To investigate the effects of whey protein supplementation combined with resistance training on older adults with type 2 diabetes.
- To assess impacts on glycemic control, muscle strength, body composition, and quality of life.
Main Methods:
- A 12-week, double-blind, placebo-controlled, randomized study involving older adults with type 2 diabetes.
- Participants underwent resistance training twice weekly, with one group receiving whey protein supplementation (33g twice weekly) and the other a placebo.
- Evaluated outcomes included body composition, muscle strength, glycemic profile, renal function markers, cardiopulmonary capacity, and quality of life.
Main Results:
- Both whey protein and placebo groups demonstrated improvements in muscle strength and mass.
- Whey protein supplementation showed a slight, non-clinically significant increase in blood urea, remaining within normal limits.
- A minor improvement in mental health was observed in the whey protein group, not reaching clinical significance.
Conclusions:
- Resistance exercise twice weekly is effective in preventing sarcopenia progression in older adults with type 2 diabetes, irrespective of whey protein supplementation.
- Further research is required to establish safe and effective whey protein dosages for improving muscle strength without causing renal impairment in diabetic older adults.
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