Table 4. Differences in Percentage of Time Spent in MVPA During School, PE, and Afterschool PA Program by Demographic Characteristics*.
During school hours(450 mins/day) During PE(45 mins/day) During afterschool PA program(40 mins/day)
Sex Boys 10.5 (0.7) 37.4 (1.5) 60.9 (1.8)
Girls 8.0 (0.5) 25.8 (1.2) 51.6 (1.4)
P-value .002 <.001 <.001
Grade 3rd 7.9 (0.8) 27.1 (2.2) 56.9 (2.1)
4th 10.2 (0.6) 32.8 (1.7) 57.5 (1.6)
5th 9.6 (0.7) 34.8 (2.2) 54.5 (2.1)
P-value .061 (3rd vs 4th) # .020 (3rd vs 5th) # .455
Race/ethnicity Black 10.2 (0.5) 35.16 (1.52) 53.0 (1.4)
Hispanic 7.9 (0.7) 29.48 (1.80) 56.2 (1.7)
Others 9.6 (1.1) 30.09 (3.09) 59.7 (2.9)
P-value .031 (Black vs Hispanic) # .045 (Black vs Hispanic) # .092
BMI (n, %) <85th pct 9.1 (0.6) 31.7 (1.5) 57.2 (1.5)
≥85th pct 9.4 (0.6) 31.5 (1.9) 55.4 (1.8)
P-value .697 .927 .398
PA = physical activity; PE = physical education; MVPA = moderate and vigorous intensity physical activity
*values are the average % of time spent in MVPA estimated from the general linear mixed model adjusting for other variables
†P-values were estimated from the omnibus F-test in the general linear mixed model
‡BMI for age and sex percentile
#Tukey’s adjustment was used for pairwise comparisons.