“…Therefore, developing countries also need actively contributing to scientific research in order to help establish a global framework for the use of UGS (Kabisch, et al, 2015). In addition, previous studies focused on very specific age-ranges (Yao and Rhodes, 2015) and a few studies conducted with very young children (Zecevic, et al, 2010), which reduces our understanding if parents' physical co-activity and UGS affect all children. Therefore, we wanted to examine if physically more active parents bring up physically more active children as Sigmund, et al, (2008) suggested.…”