Inverse association between dietary habits with high total antioxidant capacity and prevalence of frailty among elderly Japanese women: A multicenter cross-sectional study

Objective To examine the association of dietary habits with high total antioxidant capacity (TAC) with frailty among elderly Japanese women. Design Cross-sectional multicenter study. Setting Thirty-five of 47 prefectures in Japan. Participants 2121 grandmothers or acquaintances of dietetic students...

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Bibliographic Details
Published in:The Journal of nutrition, health & aging health & aging, 2014-12, Vol.18 (9), p.827-836
Main Authors: Kobayashi, S., Asakura, K., Suga, H., Sasaki, S.
Format: Article
Language:English
Subjects:
Aging
Antioxidants
Cross-sectional studies
Diet
Epidemiology
Exercise
Food
Frailty
Geriatrics/Gerontology
Medicine
Medicine & Public Health
Neurosciences
Nutrition
Nutrition research
Older people
Physical fitness
Primary Care Medicine
Public health
Quality of Life Research
Questionnaires
Students
Vitamin E
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Summary:Objective To examine the association of dietary habits with high total antioxidant capacity (TAC) with frailty among elderly Japanese women. Design Cross-sectional multicenter study. Setting Thirty-five of 47 prefectures in Japan. Participants 2121 grandmothers or acquaintances of dietetic students aged 65 and older. Measurements Dietary TAC and food intakes were calculated using a validated brief-type self-administered diet history questionnaire. The TAC value of each food was assigned using four different assays, ferric reducing ability of plasma (FRAP), oxygen radical absorbance capacity (ORAC), Trolox equivalent antioxidant capacity (TEAC), and total radical-trapping antioxidant parameter (TRAP). Frailty was defined as the presence three or more of the following four components: slowness and weakness (two points), exhaustion, low physical activity, and unintentional weight loss. Results The number of subjects with frailty was 486 (23%). Multivariate adjusted ORs (95% CI) for frailty in the highest compared to the lowest quintile were 0.35 (0.24, 0.53) for FRAP, 0.35 (0.23, 0.52) for ORAC, 0.40 (0.27, 0.60) for TEAC, and 0.41 (0.28, 0.62) for TRAP. The intakes of green tea, coffee, vegetables, and fruits which contribute to dietary TAC were also associated with lower odds of frailty (the range of multivariate adjusted OR: 0.47 for vegetables to 0.77 for green tea), although the odds ratios were less marked than those of dietary TAC. Conclusions Dietary habits with high TAC showed a stronger inverse association with frailty in elderly Japanese women than the individual foods examined.
ISSN:1279-7707
1760-4788
DOI:10.1007/s12603-014-0556-7