Table 1.
Characteristics of study participants (n = 20) classified by body mass index.
| Characteristics | Lean | Obese | P value* | P value (age and sex) |
|---|---|---|---|---|
| Sex | 5M/5F | 5M/5F | 1.0 | — |
| Age (y) | 29.9 ± 2.2 | 35.9 ± 3.2 | 0.14 | — |
| Body mass index (kg/m2) | 23.6 ± 0.7 | 34.4 ± 1.3 | <0.001 | <0.001 |
| Body fat (%)╪ | 25.0 ± 1.6 | 36.8 ± 2.2 | <0.001 | <0.001 |
| Waist circumference (cm) | 83.8 ± 2.9 | 103.6 ± 3.4 | <0.001 | 0.0032 |
| Systolic blood pressure (mmHg) | 117.7 ± 2.2 | 119.4 ± 2.5 | 0.62 | 0.57 |
| Diastolic blood pressure (mmHg) | 72.0 ± 1.5 | 75.0 ± 2.0 | 0.24 | 0.52 |
| Triglycerides (mg/dL) | 101.1 ± 15.4 | 105.2 ± 15.0 | 0.85 | 0.77 |
| Cholesterol (mg/dL) | 174.3 ± 10.4 | 182.9 ± 10.7 | 0.57 | 0.61 |
| High density lipoproteins (mg/dL) | 52.5 ± 4.4 | 48.3 ± 3.3 | 0.45 | 0.45 |
| Low density lipoproteins (mg/dL) | 101.7 ± 8.7 | 113.5 ± 9.0 | 0.36 | 0.95 |
| Hemoglobin A1c (%) | 5.2 ± 0.04 | 5.3 ± 0.1 | 0.24 | 0.47 |
| Fasting plasma glucose (mg/dL) | 87.5 ± 2.0 | 90.2 ± 1.7 | 0.31 | 0.34 |
| Fasting plasma insulin (µU/mL) | 6.5 ± 1.3 | 13.4 ± 2.0 | 0.64 | 0.0054 |
| M value (mg/kg.min) | 7.7 ± 0.5 | 3.8 ± 0.5 | <0.001 | <0.001 |
| M value (mg/kg.min·FFM) | 10.2 ± 0.7 | 6.0 ± 0.8 | <0.001 | <0.001 |
Data presented as mean ± SEM, based on independent sample t-tests. Adjusted for age and sex by ANCOVA.
*
Calculated by Chi-Square Test.
╪
Body fat determined by biometric impedance analysis (BIA). FFM, Fat-free mass.