Ageing; Bone architecture; Bone density; Dynapenia; Obesity; Protein intake; Aged; Body Composition; Female; Hand Strength; Humans; Bone Density; Muscle Strength; Medicine (miscellaneous); Nutrition and Dietetics; Public Health, Environmental and Occupational Health
Abstract :
[en] 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-: < 1 g/kg per d (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.
Disciplines :
Geriatrics
Author, co-author :
Buckinx, Fanny ; Université de Liège - ULiège > Unité de recherche Santé publique, épidémiologie et économie de la santé (URSAPES) ; Département des Sciences de l'Activité physique, Groupe de Recherche en Activité Physique Adapté, Université du Québec à Montréal, Pavillon Sciences Biologiques, SB-4615, 141, Avenue du Président Kennedy, Montreal, QC H2X 1Y4, Canada ; Centre de Recherche de l'Institut Universitaire de Gériatrie de Montréal, Montreal, QC, Canada
Peyrusque, Eva; Département des Sciences de l'Activité physique, Groupe de Recherche en Activité Physique Adapté, Université du Québec à Montréal, Pavillon Sciences Biologiques, SB-4615, 141, Avenue du Président Kennedy, Montreal, QC H2X 1Y4, Canada ; Centre de Recherche de l'Institut Universitaire de Gériatrie de Montréal, Montreal, QC, Canada
Bass, Alec; École de Réadaptation, Université de Montréal, Montreal, QC, Canada
Noirez, Philippe; Département des Sciences de l'Activité physique, Groupe de Recherche en Activité Physique Adapté, Université du Québec à Montréal, Pavillon Sciences Biologiques, SB-4615, 141, Avenue du Président Kennedy, Montreal, QC H2X 1Y4, Canada ; UFR STAPS, Université de Reims Champagne-Ardenne, Reims, France ; INSERM UMRS1124, Université de Paris, Paris, France
Aubertin-Leheudre, Mylène; Département des Sciences de l'Activité physique, Groupe de Recherche en Activité Physique Adapté, Université du Québec à Montréal, Pavillon Sciences Biologiques, SB-4615, 141, Avenue du Président Kennedy, Montreal, QC H2X 1Y4, Canada ; Centre de Recherche de l'Institut Universitaire de Gériatrie de Montréal, Montreal, QC, Canada
Language :
English
Title :
Relationship between protein intake and bone architecture or bone mineral density among dynapenic-obese older adults.
Acknowledgements: The authors would like to thank all study participants. Financial support: F.B. is funded by IRSC and FRQS post-doctoral fellowships, A.B. is funded by IRSC and FRQS master fellowships. M.A.-L. is recipient of Chercheur Boursier salary awards from the FRQS. This work was supported by grants from the FRQS, the Réseau Québécois de Recherche sur le Vieillissement, a thematic network funded by FRQS and the Groupe de Recherche en Activité Physique Adaptée – Université du Québec à Montréal. Conflict of interest: The authors declare that they have no conflict of interest. Authorship: M.A.L. and P.N. conceived the original idea. E.P. and A.B. collected the data. F.B. and P.N. performed the statistical analyses. F.B. wrote the manuscript. M.A.L., P.N., E.V. and A.B. revised the manuscript. M.A.L. and P.N. supervised the project. Ethics of human subject participation: The current study was conducted according to the guidelines laid down in the Declaration of Helsinki and all procedures involving research study participants were approved by the Ethics Committee of the Université du Québec à Montréal. Written informed consent was obtained from all subjects/patients.
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