Dietary Intake, D3Cr Muscle Mass, and Appendicular Lean Mass in a Cohort of Older Men

• Published in: The journals of gerontology. Series A, Biological sciences and medical sciences Biological sciences and medical sciences, 2020-06, Vol.75 (7), p.1353-1361
• Main Authors: Rogers-Soeder, Tara S, Peters, Katherine E, Lane, Nancy E, Shikany, James M, Judd, Suzanne, Langsetmo, Lisa, Hoffman, Andrew R, Evans, William J, Cawthon, Peggy M
• Format: Article
• Language: English
• Subjects: Age Factors; Aged; Aged, 80 and over; Body Composition; Body fat; Body Mass Index; Cohort Studies; Creatine; Cross-Sectional Studies; Diet; Dietary intake; Dietary Proteins - administration & dosage; Dual energy X-ray absorptiometry; Editor's Choice; Energy intake; Factor analysis; Food sources; Humans; Linear Models; Male; Meat; Muscular system; Nutrients - administration & dosage; Older people; Osteoporosis; Osteoporotic Fractures - epidemiology; Regression analysis; Sarcopenia; Sarcopenia - diagnosis; Sarcopenia - epidemiology; Sex Factors; Surveys and Questionnaires; THE JOURNAL OF GERONTOLOGY: Medical Sciences
• ISSN: 1079-5006; 1758-535X
• DOI: 10.1093/gerona/glz145

Abstract Background We examined cross-sectional associations between dietary patterns, macronutrient intake, and measures of muscle mass and lean mass in older men. Methods Participants in the Osteoporotic Fractures in Men (MrOS) cohort (n = 903; mean ± SD age 84.2 ± 4 years) completed brief Block food frequency questionnaires (May 2014–May 2016); factor analysis was used to derive dietary patterns. The D3-creatine (D3Cr) dilution method was used to measure muscle mass; dual-energy x-ray absorptiometry (DXA) was used to measure appendicular lean mass (ALM). Generalized linear models were used to report adjusted means of outcomes by dietary pattern. Multiple linear regression models were used to determine associations between macronutrients and D3Cr muscle mass and DXA ALM. Multivariable models were adjusted for age, race, clinic site, education, depression, total energy intake, height, and percent body fat. Results Greater adherence to a Western dietary pattern (high factor loadings for red meat, fried foods, and high-fat dairy) was associated with higher D3Cr muscle mass (p-trend = .026). Adherence to the Healthy dietary pattern (high factor loadings for fruit, vegetables, whole grains, and lean meats) was not associated with D3Cr muscle mass or DXA ALM. Total protein (β = 0.09, 95% CI = 0.03, 0.14) and nondairy animal protein (β = 0.16, 95% CI = 0.10, 0.21) were positively associated with D3Cr muscle mass. Nondairy animal protein (β = 0.06, 95% CI = 0.002, 0.11) was positively associated with DXA ALM. Associations with other macronutrients were inconsistent. Conclusions Nondairy animal protein intake (within a Western dietary pattern and alone) was positively associated with D3Cr muscle mass in older men.