“…However, in general meaning when we added the confounding factors, our results show that parents' physical co-activity was negatively related to frequency of children's PA in UGS, which means parents' participation in children's PA negatively affects frequency of children's PA. On the other hand, similarly to previous studies (Sigmund, et al, 2008;Brockman, et al, 2009;Zecevic, et al, 2010), we found that frequency of parents' PA with children was associated with frequency of children's PA and duration of parents' PA with children was associated with duration of children's PA in UGS. One of the possible explanations for the findings is that when parents take their children to parks or playgrounds for PA, they try to guard them due to the various concerns such as fear of traffic accidents, teenage gangs, or fear of strangers (Clements, 2004;Veitch, et al, 2006), parents may tend to limit children's visit to the UGS for PA. Alternatively, parents' responsibilities at home may have negatively affected frequency of children's PA. If parents, on the other hand, go the UGS to do PA, it positively affects frequency of children's PA.…”