Table 2. Basic characteristics for male college students grouping by BMI.
| BMI | <18.5 | >=18.5, <23.9 | >=23.9, <27.9 | >=27.9 | P-value |
|---|---|---|---|---|---|
| N | 28 | 79 | 10 | 4 | |
| Age (year) | 19.57±1.26 | 19.82±1.53 | 19.80±1.40 | 19.50±1.29 | 0.862 |
| Lean body weight (kg) | 45.77±2.63 | 50.77±4.26 | 56.05±5.37 | 63.15±4.65 | <0.001 |
| Fat content (kg) | 4.16±1.70 | 7.19±3.04 | 16.20±3.16 | 23.77±4.19 | <0.001 |
| Muscle content (kg) | 43.37±2.50 | 48.13±4.05 | 53.15±5.08 | 59.88±4.42 | <0.001 |
| Presumptive bone mass (kg) | 2.40±0.14 | 2.65±0.22 | 2.90±0.29 | 3.27 ± 0.24 | <0.001 |
| Body moisture (kg) | 31.52±2.53 | 35.59±3.75 | 37.99±4.83 | 41.30±5.49 | <0.001 |
| Protein (kg) | 11.89±0.99 | 12.58±1.73 | 15.19±1.89 | 18.60±1.63 | <0.001 |
| Intracellular fluid (kg) | 19.53±2.01 | 22.38±2.90 | 23.51±3.64 | 25.20±4.13 | <0.001 |
| Extracellular fluid (kg) | 12.02±0.54 | 13.24±0.90 | 14.52±1.22 | 16.12±1.41 | <0.001 |
| Body fat percentage (%) | 8.26±3.32 | 12.14±4.25 | 22.24±2.96 | 27.35±4.83 | <0.001 |
| Muscle volume ratio (%) | 86.67±3.79 | 95.35±6.77 | 106.70±8.30 | 116.75±9.73 | <0.001 |
| Visceral fat area (cm2) | 10.00±0.00 | 28.09±15.29 | 77.90±10.79 | 119.85±9.77 | <0.001 |
| Visceral fat content (kg) | 0.29±0.17 | 0.69±0.48 | 2.43±0.62 | 4.42±0.96 | <0.001 |
| Subcutaneous fat content (kg) | 3.85±1.54 | 6.45±2.56 | 13.75±2.54 | 19.35±3.28 | <0.001 |
| Waist to hip ratio (%) | 0.83±0.03 | 0.86 ± 0.03 | 0.93±0.01 | 0.98±0.02 | <0.001 |
| Basal metabolism (kcal/d) | 1318.57±71.22 | 1466.28±124.31 | 1641.40±169.38 | 1875.00±132.93 | <0.001 |
| Total energy metabolism (kcal/d) | 1958.04±105.78 | 2177.42±184.61 | 2437.60±251.44 | 2784.25±197.20 | <0.001 |
| Edema index (%) | 0.36±0.01 | 0.35±0.01 | 0.36±0.01 | 0.36±0.01 | 0.044 |
| Trunk muscle mass (kg) | 21.94±1.50 | 24.13±2.08 | 26.21±2.60 | 29.93±3.27 | <0.001 |
| Left upper limb muscle mass (kg) | 2.22±0.19 | 2.50±0.32 | 2.65±0.35 | 2.77±0.26 | <0.001 |
| Left lower limb muscle mass (kg) | 8.43±0.54 | 9.41±0.97 | 10.64±1.13 | 12.08±0.68 | <0.001 |
| Right upper limb muscle mass (kg) | 2.31±0.21 | 2.58±0.26 | 2.73±0.35 | 2.95±0.26 | <0.001 |
| Right lower extremity muscle mass (kg) | 8.58±0.51 | 9.61±0.92 | 11.01±1.21 | 12.28±0.70 | <0.001 |
| Trunk fat mass (kg) | 2.07±1.17 | 3.66±1.94 | 9.11±2.01 | 14.22±2.47 | <0.001 |
| Trunk fat rate (%) | 8.08±4.38 | 12.23±5.49 | 24.68±3.96 | 31.20±5.55 | <0.001 |
| Left upper limb fat mass (kg) | 0.20±0.07 | 0.32±0.11 | 0.62±0.14 | 0.75±0.17 | <0.001 |
| Left upper extremity fat percentage (%) | 6.56±2.36 | 9.83±3.26 | 17.82±2.45 | 20.30±5.35 | <0.001 |
| Left lower limb fat mass (kg) | 0.92±0.28 | 1.51±0.48 | 2.91±0.55 | 4.00±0.87 | <0.001 |
| Left lower extremity fat rate (%) | 9.17±2.93 | 12.79±3.37 | 20.33±2.13 | 23.70±4.50 | <0.001 |
| Right upper limb fat mass (kg) | 0.18±0.07 | 0.30±0.11 | 0.60±0.12 | 0.78±0.21 | <0.001 |
| Right upper limb fat rate (%) | 5.99±2.23 | 9.11±3.17 | 16.88±2.25 | 19.20±5.02 | <0.001 |
| Right lower extremity fat mass (kg) | 0.90±0.27 | 1.52±0.47 | 3.00±0.56 | 4.12±0.75 | <0.001 |
| Right lower extremity fat rate (%) | 8.86±2.81 | 12.64±3.22 | 20.30±2.31 | 24.00±3.96 | <0.001 |
Data are presented as mean±SD.