Association of Protein and Magnesium Intake with Prevalence of Prefrailty and Frailty in Community-Dwelling Older Japanese Women

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  • KAIMOTO Kaori
    Department of Human Life and Science, Kagoshima Women’s College
  • YAMASHITA Mikako
    Department of Life and Environmental Sience, Kagoshima Prefectural College
  • SUZUKI Taro
    Department of Food and Agriculture Science, Graduate School of Agriculture, Ryukoku University
  • MAKIZAKO Hyuma
    Department of Physical Therapy, School of Health Sciences, Faculty of Medicine, Kagoshima University
  • KORIYAMA Chihaya
    Department of Epidemiology and Preventive Medicine, Graduate School of Medical and Dental Sciences, Kagoshima University
  • KUBOZONO Takuro
    Department of Cardiovascular Medicine and Hypertension, Graduate School of Medical and Dental Sciences, Kagoshima University
  • TAKENAKA Toshihiro
    Tarumizu Municipal Medical Center, Tarumizu Chuo Hospital
  • OHISHI Mitsuru
    Department of Cardiovascular Medicine and Hypertension, Graduate School of Medical and Dental Sciences, Kagoshima University
  • KANOUCHI Hiroaki
    Department of Clinical Nutrition, Graduate School of Comprehensive Rehabilitation, Osaka Prefecture University
  • the Tarumizu Study Diet Group

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<p>We examined the association between nutrient intake and prefrailty. Data from 815 older people (63% women) who participated in a community-based health check survey (Tarumizu Study) were analyzed. Prefrailty were defined using five parameters (exhaustion, slowness, weakness, low physical activity, and weight loss). Participants with one or more components were considered to belong to the prefrailty group. Nutrition intake was estimated from a validated brief-type self-administered diet history questionnaire. Among the participants, 154 men (52%) and 278 women (54%) were found to be in a status of prefrailty. In men, there were no significant associations between nutrient intake and prefrailty. In women, carbohydrate intake was slightly higher in prefrailty group. Vitamins K, B1, B2, folic acid, pantothenic acid, phosphorus, potassium, calcium, magnesium, iron, zinc, and copper intake was significantly lower in the prefrailty group. Among the nutrients, magnesium was identified as a significant covariate of prefrailty using a stepwise regression method. In women adjusted ORs (95%CI, p value) for prefrailty in the first, second, third, and fourth quartiles of magnesium intake were 1.00 (reference), 0.52 (0.29–0.92, 0.024), 0.51 (0.28–0.95, 0.033), and 0.38 (0.19–0.74, 0.005), respectively, by multivariate logistic regression analysis (variates: age, body mass index, energy intake, supplement use, osteoporosis, magnesium, and protein intake). Protein intake did not related to prefrailty. Protein intake might be sufficient to prevent prefrailty in the present study. We propose magnesium to be an important micronutrient that prevents prefrailty in community-dwelling older Japanese women.</p>

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