Relationship between protein intake and bone architecture or bone mineral density among dynapenic-obese older adults

Objective: The current study aimed to assess the relationship between protein intake and bone parameters among dynapenic-obese older adults. Design: The current study is a secondary analysis with an a posteriori and exploratory design. Setting: Subjects were recruited from the community via social communication (flyers and meetings in community centres) in the Great Montreal area. Participants: Twenty-six subjects were divided a posteriori into two groups according to their usual protein intake: PROT−: n 13; women: 53·8 %; 66·5 ( sd 3·3) years) and PROT+: > 1·2 g/kg per d ( n 13; women: 61·5 %; 67·2 ( sd 2·7) years). Results: Both groups were comparable for age (PROT−: 66·5 ( sd 3·3) v . PROT+: 67·2 ( sd 2·7) years, P = 0·61) and gender (women: PROT−: n 7; 53·8 % v . PROT+: n 8; 61·5 %, P = 0·69). The PROT− group had a higher marrow area ( P = 0·049), a greater bone compressive strength ( P = 0·048) and a larger total bone area ( P = 0·045) than the PROT+ group. However, no significant difference between the two groups was observed regarding body composition (fat and lean masses) or muscle composition. Conclusions: A lower protein intake seems to be associated with bone sizes, which influence bone strength, but do not influence bone density among dynapenic-obese older people

Bone density · Bone mineral · Obesity · Osteoporosis · Bone health and osteoporosis research · Medicine · Nutrition and Health in Aging · Nutritional Studies and Diet · Endocrinology · Internal Medicine

• The Timed “Up & Go”

  Open Access•Diane Podsiadlo, Sandra Richardson•Journal of the American…•1991

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