Protein Intake and Mobility Limitation in Community‐Dwelling Older Adults: the Health ABC Study

Objectives The current Recommended Dietary Allowance (RDA) for protein is based on short‐term nitrogen balance studies in young adults and may underestimate the amount needed to optimally preserve physical function in older adults. We examined the association between protein intake and the onset of...

Celý popis

Uloženo v:
Podrobná bibliografie
Vydáno v:Journal of the American Geriatrics Society (JAGS) Ročník 65; číslo 8; s. 1705 - 1711
Hlavní autoři: Houston, Denise K., Tooze, Janet A., Garcia, Katelyn, Visser, Marjolein, Rubin, Susan, Harris, Tamara B., Newman, Anne B., Kritchevsky, Stephen B.
Médium: Journal Article
Jazyk:angličtina
Vydáno: United States Wiley Subscription Services, Inc 01.08.2017
Témata:
Adults
Aged
Aging
Amino Acids
Balance
Balance studies
Body height
Body weight
Body Weight - physiology
Chronic illnesses
Climbing
Cohort analysis
Community
Demography
Eating
Energy intake
Ethnic Groups
Female
Food
Geriatrics
Healthy food
Human body
Humans
Independent Living
Limitations
Male
Mental health
Mobility
Mobility Limitation
Nitrogen balance
Older people
Pennsylvania
Physical ability
Prospective Studies
protein
Proteins
Recommended Dietary Allowances
Regression analysis
Surveys and Questionnaires
Tennessee
Walking
Young adults
mobility limitation
protein
aging
ISSN:0002-8614, 1532-5415, 1532-5415
On-line přístup:Získat plný text
Tagy: Přidat tag
Žádné tagy, Buďte první, kdo vytvoří štítek k tomuto záznamu!
Popis
Shrnutí:Objectives The current Recommended Dietary Allowance (RDA) for protein is based on short‐term nitrogen balance studies in young adults and may underestimate the amount needed to optimally preserve physical function in older adults. We examined the association between protein intake and the onset of mobility limitation over 6 years of follow‐up in older adults in the Health ABC study. Design Prospective cohort study. Setting Memphis, Tennessee and Pittsburgh, Pennsylvania. Participants Community‐dwelling, initially well‐functioning adults aged 70–79 years (n = 1998). Measurements Protein intake (g/kg body weight/d) was calculated using an interviewer‐administered 108‐item food frequency questionnaire at baseline. Mobility limitation was assessed semi‐annually and defined as reporting any difficulty walking one‐quarter of a mile or climbing 10 steps on 2 consecutive 6‐month contacts. The association between protein intake and incident mobility limitation was examined using Cox proportional hazard regression models adjusting for demographics, behavioral characteristics, chronic conditions, total energy intake, and height. Results Mean (SD) protein intake was 0.91 (0.38) g/kg body weight/d, with 43% reporting intakes less than the RDA (0.8 g/kg body weight/d). During 6 years of follow‐up, 705 participants (35.3%) developed mobility limitations. Compared to participants in the upper tertile of protein intake (≥1.0 g/kg body weight/d), participants in the lower two tertiles of protein intake (<0.7 and 0.7 –<1.0 g/kg body weight/d) were at greater risk of developing mobility limitation over 6 years of follow‐up (RR (95% CI): 1.86 (1.41–2.44) and 1.49 (1.20–1.84), respectively). Conclusion Lower protein intake was associated with increased risk of mobility limitation in community‐dwelling, initially well‐functioning older adults. These results suggest that protein intakes of ≥1.0 g/kg body weight/d may be optimal for maintaining physical function in older adults.
Bibliografie:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 14
content type line 23
ISSN:0002-8614
1532-5415
1532-5415
DOI:10.1111/jgs.14856