Table III.
Results from isotemporal substitution analyses. Coefficients represent change in outcome (BMI and abdominal fat distribution) by replacing 1-hour of sedentary and light intensity PA with light to vigorous intensity PA. Greenland Health Survey 2005-10, n=1484.
| Sedentary to light | P-value | Sedentary to moderate | P-value | Light to moderate | P-value | Light to vigorous | P-value | |
|---|---|---|---|---|---|---|---|---|
| Model 1 | ||||||||
| BMI (kg/m2) | -0.21 (-0.37,- 0.04) | 0.015 | -0.47 (-0.81, -0.14) | 0.006 | -0.27 (-0.67, 0.14) | 0.200 | -1.68 (-2.89, -0.46) | 0.007 |
| Waist Circumference (cm) | -0.57 (-1.00, -1.13) | 0.011 | -1.13 (-2.01, -0.26) | 0.011 | -0.56(-1.63, 0.50) | 0.299 | -6.05 (-9.20, -2.30) | <0.001 |
| Visceral fat (cm) | -0.04 (-0.11,0.04) | 0.359 | -0.23 (-0.39, -0.08) | 0.002 | -0.20 (-0.38, -0.02) | 0.034 | -0.66 (-1.21, -0.11) | 0.018 |
| Sub-cutaneous fat (cm) | -0.08 (-0.12,- 0.03) | 0.001 | -0.05 (-0.15, 0.04) | 0.256 | 0.02 (-0.09, 0.14) | 0.692 | -0.67 (-1.01, -0.34) | <0.001 |
| Model 2 | ||||||||
| Waist Circumference (cm) | -0.007 (-0.16, 0.14) | 0.921 | -0.01 (-0.32, 0.30) | 0.951 | -0.002(-0.37, 0.37) | 0.992 | -1.9(-3.0, -0.80) | 0.001 |
| Visceral fat (cm) | 0.03 (-0.02, 0.09) | 0.251 | -0.10 (-0.21, 0.02) | 0.092 | -0.13 (-0.27, 0.007) | 0.063 | -0.17(-0.58,0.25) | 0.427 |
| Sub-cutaneous fat (cm) | -0.03 (-0.06, 0.005) | 0.096 | 0.04 (-0.02, 0.10) | 0.203 | 0.07 (-0.01, 0.15) | 0.082 | -0.33(-0.56,-0.10) | 0.0052 |
SAT: subcutaneous adipose tissue, VAT: visceral adipose tissue, WC: waist circumference (cm). SED: sedentary behavior not including sleep, 1.00-1.5 METs, LPA: light physical activity >1.5-3.0 METs, MPA: moderate physical activity >3.0-6.0 METs, VPA: vigorous physical activity <6.0 METs.
Model 1: Analyses adjusted for age, sex, smoking and fraction of weekend wear time, total hours spent on PA >1 METs
Model 2: Analyses further adjusted for BMI