Table 1 Characteristics of the study population, outdoor environmental factors, and differences between BMI groups
Groups | Range | High BMI group | Low BMI group | Difference | ||||
|---|---|---|---|---|---|---|---|---|
Characteristics | Mean ± SE | Range | Mean ± SE | Range | Mean ± SE | Range | P value | 95% CI |
Participants | n = 55 | n = 26 | n = 29 | |||||
Age (years) | 20.4 ± 0.4 | 18–29 | 20.5 ± 0.6 | 18–29 | 20.2 ± 0.4 | 18–28 | 0.676 | -0.12–1.72 |
Height (m) | 1.58 ± 0.01 | 1.46–1.72 | 1.57 ± 0.01 | 1.47–1.66 | 1.58 ± 0.01 | 1.46–1.72 | 0.217 | -0.05–0.01 |
Weight (kg) | 52.2 ± 1.1 | 41.7–72.6 | 57.5 ± 1.3 | 46.5–72.6 | 47.5 ± 0.7 | 41.7–55.7 | <0.001 | 6.97–13.06 |
BMI (kg/m2) | 20.9 ± 0.4 | 16.6–32.9 | 23.3 ± 0.6 | 20.4–32.9 | 18.8 ± 0.2 | 16.6–20.3 | <0.001 | 3.30–5.79 |
Body fat proportion (%) | 28.8 ± 0.7 | 17.4–40.9 | 32.3 ± 0.8 | 26.3–40.9 | 25.7 ± 0.7 | 17.4–33.0 | <0.001 | 4.51–8.77 |
Outdoor environmental factors | ||||||||
Outdoor temperature (°C) | 18.1 ± 1.2 | 1.3–31.6 | 17.3 ± 1.8 | 2.8–30.9 | 18.9 ± 1.7 | 1.3–31.6 | 0.496 | -6.62–3.25 |
Atmospheric pressure (hPa) | 1007.4 ± 0.9 | 994.7–1022.4 | 1008.3 ± 1.3 | 998.2–1021.1 | 1006.6 ± 1.1 | 994.7–1022.4 | 0.343 | -1.81–5.10 |
Relative humidity (%) | 67.0 ± 1.4 | 41.0–89.0 | 66.9 ± 2.4 | 41.0–89.0 | 67.1 ± 1.7 | 47.0–88.0 | 0.951 | -5.66–5.64 |