From: Tracking of leisure-time physical activity during adolescence and young adulthood: a 10-year longitudinal study
Sex
AGE 15
AGE 23
Mean
Stand. Dev.
t
p
MALES (N = 210)
7.5
5.22
4.0
2.83
-9.86
***
FEMALES (N = 214)
5.7
3.49
3.5
2.33
-8.60
t-test sex diff.
4.09***
2.54*