Table 1.

Adolescent participant survey responses.

Question and response choices		High school (N=18)	Middle school (N=9)
Age (years), mean (SD)		16.1 (1.3)	12.4 (0.7)
Grade, n (%)
	6th	N/Aa	4 (44.4)
	7th	N/A	4 (44.4)
	8th	N/A	1 (11.1)
	9th	3 (16.7)	N/A
	10th	5 (27.8)	N/A
	11th	6 (33.3)	N/A
	12th	4 (22.2)	N/A
Do you have PEb class? n (%)
	Yes	9 (50)	8 (88.9)
	No	9 (50)	0 (0)
Do you participate in physical activity outside of PE class? n (%)
	Everyday	8 (44.4)	2 (22.2)
	4 or more times	4 (22.2)	3 (33.3)
	2-3 times	5 (27.8)	2 (22.2)
	Less than 2 times	1 (5.6)	1 (11.1)
	Never	0 (0)	0 (0)
How well does “sedentary” describe you? n (%)
	Extremely	0 (0)	0 (0)
	Very well	0 (0)	0 (0)
	Moderately	6 (33.3)	0 (0)
	Slightly	6 (33.3)	4 (44.4)
	Does not describe me	6 (33.3)	4 (44.4)
Periods of inactivity attributed to... n (%)
	Boredom	10 (55.6)	2 (22.2)
	Laziness	7 (38.9)	1 (11.1)
	Too tired	14 (77.8)	5 (55.6)
	No time to be active	4 (22.2)	1 (11.1)
	Physical limitations	2 (11.1)	2 (22.2)
	Financial limitations	0 (0)	0 (0)
	Activities I enjoy are sedentary	6 (33.3)	7 (77.8)
	Others (school/homework)	5 (27.8)	3 (33.3)
Time spent on social media, mean (SD)		3 h 23 min (0.11 h)	1 h 14 min (0.03 h)
How do you access social media? n (%)
	Cell phone	17 (94.4)	8 (88.9)
	Computer	9 (50)	8 (88.9)
	Tablet	3 (16.7)	6 (66.7)
Time spent on social media
	Weekdays	Late night	After school
	Weekends	During the day	During the day
Which apps do you use? n (%)
	Instagram	16 (88.9)	7 (77.8)
	SnapChat	16 (88.9)	5 (55.6)
	YouTube	14 (77.8)	9 (100)
	Pinterest	11 (61.1)	6 (66.7)
	Twitter	8 (44.4)	0 (0)
	Google+	3 (16.7)	3 (33.3)
	Buzzfeed	2 (11.1)	2 (22.2)
	Tumblr	2 (11.1)	1 (11.1)
Time spent on each (%)
	SnapChat	43	20
	Instagram	36	30
	YouTube	24	32
	Twitter	10	0
	Pinterest	6	12.5
	Facebook	3	0

^aN/A: not applicable.

^bPE: physical education.