Obesity and Other Correlates of Physical Activity and Sedentary Behaviors among US High School Students

Table 3

Prevalence of participation in daily physical activity (DPA), vigorous physical activity (VPA), muscle-strengthening activity (MSA), television (TV) viewing, and computer or video game (C/VG) use, by demographic and BMI category among US high school students.

Categorical variable	DPA	VPA	MSA	TV	C/VG
	% (95% CI)	% (95% CI)	% (95% CI)	% (95% CI)	% (95% CI)
Sex
Male	21.7 (19.3, 24.4)	78.1 (76.1, 80.0)	64.4 (60.8, 67.9)	26.4 (24.0, 29.0)	27.6 (25.4, 30.0)
Female	8.4 (7.3, 9.5)	61.2 (58.1, 64.2)	36.6 (34.1, 39.1)	30.2 (26.9, 33.8)	19.2 (17.4, 21.3)
Chi Sq, 1 df (𝑃 value)	(0.0000)	(0.0000)	(0.0000)	(0.0193)	(0.0000)
Race/ethnicity
White	17.0 (15.6, 18.4)	72.3 (70.0, 74.5)	51.3 (48.4, 54.3)	20.6 (18.3, 23.2)	20.6 (18.7, 22.6)
Black	14.1 (12.0, 16.4)	65.1 (61.7, 68.4)	47.5 (44.3, 50.6)	52.7 (50.0, 55.5)	31.5 (28.0, 35.3)
Hispanic	11.9 (8.9, 15.7)	66.8 (62.4, 70.9)	52.2 (48.2, 56.2)	33.7 (31.6, 35.9)	23.4 (19.9, 27.3)
Other	12.4 (8.7, 17.5)	67.5 (60.8, 73.6)	48.4 (42.6, 54.3)	24.8 (18.3, 32.7)	29.5 (25.7, 33.5)
Chi Sq, 3 df (𝑃 value)	(0.0051)	(0.0001)	(0.1664)	(0.0000)	(0.0000)
Grade
9th grade	18.0 (15.5, 20.8)	74.5 (69.8, 78.7)	55.6 (50.5, 60.5)	28.7 (25.2, 32.5)	23.4 (20.5, 26.5)
10th grade	15.4 (13.7, 17.4)	72.5 (69.7, 75.1)	51.1 (48.0, 54.2)	30.4 (26.7, 34.4)	24.4 (21.9, 27.2)
11th grade	13.7 (11.8, 15.9)	67.5 (64.9, 70.1)	48.9 (44.4, 53.4)	24.7 (21.5, 28.3)	23.2 (20.2, 26.5)
12th grade	12.7 (10.9, 14.8)	63.0 (59.9, 66.0)	45.8 (43.0, 48.6)	28.9 (25.2, 33.0)	22.8 (20.9, 24.8)
Chi Sq, 3 df (𝑃 value)	(0.0169)	(0.0000)	(0.0024)	(0.0274)	(0.3173)
BMI category
Underweight/normal (<85th percentile)	16.2 (14.4, 18.2)	70.5 (68.2, 72.8)	52.3 (49.5, 55.0)	26.0 (23.2, 29.0)	23.6 (21.7, 25.5)
Overweight (≥85th to <95th percentile)	16.3 (13.3, 19.8)	70.0 (66.4, 73.4)	51.0 (46.6, 55.4)	29.6 (26.1, 33.4)	22.1 (19.8, 24.7)
Obese (≥95th percentile)	10.6 (8.2, 13.6)	67.8 (64.8, 70.7)	45.5 (42.1, 49.0)	35.1 (31.4, 38.9)	25.2 (21.7, 29.0)
Chi Sq, 2 df (𝑃 value)	(0.0002)	(0.1851)	(0.0012)	(0.0001)	(0.1470)

DPA: daily physical activity (≥60 min/day, 7 days/wk); VPA: vigorous physical activity (≥20 min/day, ≥3 days/wk); MSA: muscle strengthening activity (≥3 days/wk); TV: television (≥3 hrs/day); C/VG: computer or video games (≥3 hrs/day); BMI: body mass index = weight (kg)/height (m)² (based on measured height and weight, using age- and sex-specific percentiles from growth charts developed by Centers for Disease Control and Prevention).