Associations of sedentary behavior and physical activity with physical measurements and dyslipidemia in school-age children: a cross-sectional study

Table 2 Association between sedentary behavior^a/physical activity^b and anthropometric measurements

	BMI z-score Mean ± SD	WHR Mean ± SD	WHtR Mean ± SD
Boys
SB
Any item ≥1.0 h/day vs. All items <1.0 h/day
Regression coefficient (95% CI, model 1^c)	0.222 (-0.072–0.517)	0.013 (-0.001–0.027)	0.009 (-0.003–0.020)
Regression coefficient (95% CI, model 2^d)	0.234 (-0.122–0.589)	0.012 (-0.003–0.028)	0.010 (-0.003–0.022)
Total PA
< 200 mins/week (lowest 25%) vs. ≥200 mins/week (highest 75%)
Regression coefficient (95% CI, model 1^c)	0.060 (-0.291–0.412)	0.010 (-0.005–0.026)	0.011 (-0.002–0.023)
Regression coefficient (95% CI, model 2^d)	0.051 (-0.301–0.402)	0.010 (-0.003–0.028)	0.010 (-0.002–0.023)
Girls
SB
Any item ≥1.0 h/day vs. All items <1.0 h/day
Regression coefficient (95% CI, model 1^c)	0.203 (-0.075–0.481)	0.005 (-0.008–0.019)	0.004 (-0.006–0.014)
Regression coefficient (95% CI, model 2^d)	0.287 (-0.060–0.634)	0.003 (-0.013–0.018)	0.005 (-0.006–0.016)
Total PA
< 200 mins/week (lowest 25%) vs. ≥200 mins/week (highest 75%)
Regression coefficient (95% CI, model 1^c)	−0.075 (-0.457–0.307)	−0.001 (-0.017–0.016)	−0.005 (-0.018–0.007)
Regression coefficient (95% CI, model 2^d)	−0.063 (-0.444–0.319)	0.001 (-0.016–0.017)	−0.005 (-0.017–0.007)

SB sedentary behavior, PA physical activity
^asedentary behavior includes screen time (① Watching TV; ②Watching video, VCD or DVD; ③Using a computer; ④Using a cell phone) and other leisure time SB includes ① Reading, writing, drawing; ② Playing chess, playing with toys or dolls while sitting; and other sedentary behaviors
^bTotal PA includes leisure-time PA (running, swimming, riding bicycles, playing football, basketball, table tennis, badminton, dancing, climbing mountains, skating, rope skipping, playing hopscotch, rubber band skipping, beanbag games, other group games (chasing or romping), and other physical activities) and school-time PA (physical education classes and calisthenics during the break)
^cModel 1 was constructed by multilevel analysis (the individual level, class level, grade level, and investigation area level), adjusted for age, total energy intake per day, and family income
^dModel 2 was the same as Model 1, but additionally adjusted for PA when association for SB was examined, and vice versa

ISSN: 1471-2458