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Anthropometric and nutritional assessment in Italian elderly subjects.

The aims of this anthropometric study on 486 non-institutionalized subjects aged 60 and over were to assess the body mass index (BMI), to evaluate possible sex and age-linked differences of BMI and to find whether there were any correlations with systolic and diastolic blood pressure. To this end, the subjects were divided into three age groups: A: 60-69 years, B: 70-79 years and C: > or =80 years old. The results showed a high prevalence (74%) of overweight or clearly obese subjects (BMI >25.1 for men and BMI > 23.9 for women) (70% male and 77% female). Both the BMI and diastolic blood pressure showed a decreasing trend in the three age groups and were significantly correlated in the total population (p < 0.001). A dietary investigation using a 24-hour recall method, repeated on three separate days, was carried out on a subsample of 90 subjects, selected at random from the total population. They underwent in-depth anthropometric assessment (BMI, four skinfolds, mid-arm, waist and hip circumferences, midarm muscle and fat areas, body fat percent). The trend of the anthropometric assessment reflected that of the total population. Total energy intake in both sexes did not significantly differ from the Italian RDA (Recommended Dietary Allowance). As regards the three macronutrients, no significant differences in protein and carbohydrate intakes were found between the sexes. However, in the females, fat intake was over the Italian DRA (30%) and below it in the males. Calcium intake was lower than the Italian RDA (1,000 mg/day) in most males (77%) and females (89%). However, iron and vitamin intakes were adequate in most subjects. As regards age-linked differences, there were non significant changes in the percentage of energy intake from proteins of the males whereas this decreased with age and was significantly different (p < 0.05) in the females. No significant differences were found in the percentage of energy intake from carbohydrates and fats.