Associations of Physical Activity and Sedentary Behaviors with Dietary Behaviors among US High School Students

Table 2

Prevalence (%) of body weight status, weight management goals, physical activity, sedentary behaviors, and dietary behaviors by sex, among US high school students.

Measures	Female		Male		Chi-square test
	%	(95% CI)	%	(95% CI)	( value)
Body weight status^a
Obese (BMI ≥ 95th percentile)	20.5	(18.0–23.2)	17.6	(15.9–19.5)	()
Overweight (85th ≤ BMI < 95th percentile)	17.4	(16.0–18.9)	18.2	(16.4–20.2)
Normal weight (5th ≤ BMI < 85th percentile)	58.9	(56.2–61.6)	62.4	(59.8–64.9)
Underweight (BMI < 5th percentile)	3.2	(2.4–4.1)	1.8	(1.3–2.5)
Weight management goals^b
Lose weight	60.5	(57.9–63.1)	33.8	(31.6–36.1)	()
Gain weight	5.7	(4.6–7.0)	28.8	(26.7–31.0)
Stay the same weight	19.0	(17.7–20.4)	19.7	(18.2–21.3)
Not trying to do anything about weight	14.8	(13.2–16.5)	17.7	(15.9–19.6)
Physical activity
Daily physical activity^c	8.4	(7.3–9.5)	21.7	(19.3–24.4)	()
Muscle strengthening^d	36.6	(34.1–39.1)	64.4	(60.8–67.9)	()
Sedentary behaviors
Television viewing^e	30.2	(26.9–33.8)	26.4	(24.0–29.0)	()
Computer/video game use^f	19.2	(17.4–21.3)	27.6	(25.4–30.0)	()
Dietary behaviors
Fruits^g	39.1	(36.3–42.0)	42.8	(41.2–44.4)	()
Vegetables^h	18.3	(16.3–20.5)	18.6	(17.3–20.1)	NS
Fast food^i	72.6	(68.2–76.6)	77.1	(74.3–79.7)	()
Sugar-sweetened beverages^j	18.1	(15.5–21.1)	26.4	(23.1–30.0)	()

CI = confidence interval. NS = not significant, .
BMI = body mass index = weight (kg)/height (m)².
^aBased on BMI calculated from measured height and weight and using age- and sex-specific percentiles from growth charts developed by Centers for Disease Control and Prevention.
^bWhich of the following are you trying to do about your weight?
^cPhysically active for ≥60 minutes, 7 days/week.
^dParticipated in muscle strengthening exercises on ≥3 days/week.
^eWatched television for >2 hours on an average school day.
^fPlayed video or computer games or used a computer for something other than school work >2 hours on an average school day.
^gAte fruits ≥2 times/day.
^hAte vegetables ≥3 times/day.
ⁱAte at least one meal or snack from a fast food restaurant ≥1 days/week.
^jDrank sugar-sweetened beverages ≥3 times/day.