Table 2

Magnesium intake and serum magnesium by dietary intake, physical activity level, depression, metabolic parameter, body fat percentage, body mass index, hsCRP and estimated GFR status
Variables n Mg intake (mg/kg) P Serum Mg (mmol/L) P
Dietary intake
Energy intake (kcal/kg) 0.000 0.636
< 25 109 2.8 ± 1.3 ab 0.77 ± 0.10
25 to 30 47 4.0 ± 1.2 a 0.79 ± 0.10
>30 54 4.6 ± 2.0 b 0.79 ± 0.08
Protein intake (g/kg) 0.000 0.172
< 0.8 115 2.9 ± 1.3 ab 0.77 ± 0.10
0.8 to 1.0 48 3.7 ± 1.2 ac 0.80 ± 0.09
>1.0 47 5.0 ± 2.0 bc 0.79 ± 0.08
Physical activity level 0.002 0.024
Low 48 2.8 ± 1.4 a b 0.79 ± 0.11
Moderate 83 3.8 ± 1.7 a 0.80 ± 0.09 c
High 79 3.8 ± 1.7 b 0.76 ± 0.08 c
Depression (DSM-IV) 0.001 0.554
< 5 symptoms 147 3.8 ± 1.7 0.78 ± 0.10
≧ 5 symptoms 63 3.0 ± 1.4 0.78 ± 0.09
Metabolic parameters
HbA1c (%) 0.709 0.558
< 7.0 103 3.6 ± 1.6 0.79 ± 0.08
≧ 7.0 107 3.5 ± 1.7 0.78 ± 0.11
HDL-cholesterol (mg/dL) 0.051 0.659
≧ 40 for men or ≧ 50 for women 114 3.8 ± 1.8 0.78 ± 0.09
< 40 for men or < 50 for women 96 3.3 ± 1.5 0.78 ± 0.10
Triglycerides (mg/dL) 0.452 0.456
< 150 172 3.6 ± 1.7 0.78 ± 0.10
≧ 150 38 3.4 ± 1.4 0.79 ± 0.08
Blood pressure (mmHg) 0.344 0.669
Systolic BP < 130 / Diastolic BP < 80 64 3.7 ± 2.0 0.79 ± 0.09
Systolic BP ≧ 130 / Diastolic BP ≧ 80 146 3.5 ± 1.5 0.78 ± 0.10
Waist circumference (cm) 0.000 0.687
< 80 for men or < 90 for women 44 4.6 ± 2.2 0.78 ± 0.10
≧ 80 for men or ≧ 90 for women 166 3.3 ± 1.4 0.78 ± 0.09
Metabolic syndrome 0.013 0.234
< 3 components 54 4.2 ± 2.3 0.80 ± 0.10
≧ 3 components 156 3.3 ± 1.4 0.78 ± 0.09
Body Fat percentage (%) 0.000 0.873
< 25 for men or < 30 for women 101 4.0 ± 1.9 0.78 ± 0.09
≧ 25 for men or ≧ 30 for women (obese) 109 3.1 ± 1.4 0.78 ± 0.10
Body mass index (kg/m2) 0.000 0.803
< 27 151 3.9 ± 1.7 0.78 ± 0.10
≧ 27 (obese) 59 2.8 ± 1.3 0.78 ± 0.09
High-sensitivity CRP (mg/L) 0.246 0.186
< 1 Low risk 57 3.9 ± 1.9 0.76 ± 0.10
1 to 3 Moderate risk 105 3.5 ± 1.6 0.79 ± 0.10
> 3 High risk 35 3.3 ± 1.5 0.80 ± 0.08
Estimated GFR(ml/min) 0.067 0.363
≧ 90 CKD stage 1 30 4.0 ± 1.7 0.76 ± 0.10
60 - 89 CKD stage 2 121 3.6 ± 1.8 0.79 ± 0.09
30 - 59 CKD stage 3 59 3.1 ± 1.4 0.78 ± 0.11

1. Abbreviations: HbA1C, glycated hemoglobin; HDL, high-density lipoprotein; BP, blood pressure; CRP, C-reactive protein; GFR, glomerular filtration rate; CKD, chronic kidney disease.

2. The t test was used for the difference in the means of two groups. The means of more than two groups were compared using one-way ANOVA followed by Scheffe’s multiple comparisons test. a-a, b-b, c-c indicates significant difference between two groups. Data are means ± SD. Significant difference (p < 0.05).

Huang et al.

Huang et al. Nutrition Journal 2012 11:41   doi:10.1186/1475-2891-11-41

Open Data