Estimated Equilibrated Dietary Intakes for Nine Minerals (Na, K, Ca, Mg, P, Fe, Zn, Cu, and Mn) Adjusted by Mineral Balance Medians in Young Japanese Females
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概要
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The present study sought to determine estimated equilibrated dietary intakes (EEDIs) for nine essential minerals: sodium (Na), potassium (K), calcium (Ca), magnesium (Mg), phosphorus (P), iron (Fe), zinc (Zn), copper (Cu), and manganese (Mn), using data from 17 human mineral balance studies conducted from 1986 to 2007 (subjects=178). Among these studies, two used male subjects, two subjected some or all subjects to sodium restriction, and one study utilized a low protein diet; these subjects were not included in the present analysis. Consequently, data from 13 studies of young female subjects (n=131) consuming a standard diet were selected. Balance distribution medians for six of the minerals (Na, K, Mg, Fe, Zn and Cu) were positive, so the data were adjusted to set the medians of the balances to zero. Medians for the other minerals (Ca, P and Mn) were close to zero and were not adjusted. Intake and balance for each mineral were divided by body weight (BW), lean body mass (LBM), and standard body weight (SBW), which was calculated using height and standard body mass index (BMI=22), and EEDIs were calculated as the intercept of a simple regression equation. When relationships between intake and balance of a mineral were not significant in the regression equation, a significant regression equation comparing intake and balance of another mineral was used to calculate the intercept. Significant simple regression equations were not obtained from any of the three parameters of Na or Zn, or for two of the parameters of P; thus, K, Fe and Ca balances were used to determine the intercepts for Na, Zn and P, respectively. EEDIs for the minerals were: Na (67.9, 89.0, 62.5), K (39.5, 53.5, 37.4), Ca (11.0, 14.4, 10.1), Mg (4.18, 5.51, 3.86), P (18.7, 24.6, 17.3) (mg/kg BW/d, mg/kg LBM/d, mg/kg SBW/d), Fe (180, 237, 165), Zn (168, 241, 166), Cu (30.9, 42.6, 29.7), Mn (55.1, 72.1, 50.7) (μg/kg BW/d, μg/kg LBM/d, μg/kg SBW/d), respectively. These values are nearly identical to the mean dietary intakes.
著者
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KODAMA NAOKO
Tokyo Dietitian Academy
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NISHIMUTA MAMORU
Chiba Prefectural University of Health Science
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Yoshitake Yutaka
National Institute Of Fitness And Sports In Kanoya
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NISHIMUTA Mamoru
Chiba Prefecture University of Health Science
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SHIMADA Mieko
Chiba Prefecture University of Health Science
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MATSUZAKI Nobue
Chiba College of Health Science
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MORIKUNI Eiko
Chiba College of Health Science
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