further. Gender differences exist in children’s PA levels both in Hong Kong
(Department of Health, 2009) and the USA (Schaben et al., 2006) with boys reported to
have higher levels of PA than girls. Studies also reported that boys have higher
perceived competence and enjoyment of PA (Carroll and Loumidis, 2001) and receive
greater parental support for PA participation (Raudsepp, 2006).