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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

From: Correlation of magnesium intake with metabolic parameters, depression and physical activity in elderly type 2 diabetes patients: a cross-sectional study

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. 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. 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).