Table 2.

Barriers to physical activity perceived by middle school boys and girls—Mean scores and standard deviations (N = 206; [61]); demographics. Response choices for the scales included: 1 (not at all true), 2 (not very true), 3 (sort of true), and 4 (very true)

Boys	Mean score (standard-deviation)	Girls	Mean score (standard-deviation)
I have minor aches and pains from activity	2.14 (1.01)	I have minor aches and pains from activity	2.29 (1.04)
I am tired	2.10 (0.98)	I am tired	2.26 (1.01)
I am too busy	2.07 (0.95)	I am too busy	2.22 (1.09)
I had a bad day at school	2.05 (1.10)	I am not motivated or feeling too lazy to exercise at the time	2.18 (1.07)
I feel self-conscious or concerned about my looks when I exercise	2.05 (1.06)	I feel self-conscious or concerned about my looks when I exercise	2.13 (1.12)
I am not motivated or feeling too lazy to exercise at the time	1.95 (0.93)	I have to exercise alone	1.95 (1.14)
I have to exercise alone	1.85 (1.11)	It is very hard work	1.90 (1.03)
It is very hard work	1.78 (0.91)	I had a bad day at school	1.85 (0.96)
I am afraid to fail	1.77 (1.06)	I am afraid to fail	1.78 (1.08)