The purpose of this study was to clarify the present state of physical activity and health-related quality of life (HRQoL) in adolescents living in regions affected by the Great East Japan Earthquake, and to examinethe relationship between physical activity and HRQoL in adolescents living in different regions affected by the disaster. The participants were 573 aged 11-13 in East Matsushima city (where housing damage affected10% of participants:low damage group) and in Onagawa town (where housing damage affected 60% of participants:high damage group) . The survey was performed in September, 2011. Survey items included sports club activity, time spent on physical activity, and HRQoL (the 23-item Pediatric QoL Inventory Version 4.0 Generic Core Scales) . The results of a chi-square test showed that there were no significant differences in the rate of time spent category (<60 min / wk, 60-420 min / wk, and 420 min / wk C ) between the low damage group and the high damage group. However, the rate of <60 min/wkin both groups showed higher percentages than in the general adolescents. There was a high correlation between the rate of time spent category and sports club activity (belong or not) in the high damage group. The results of an unpaired t-test for each damage group showed a significant difference in an emotional functioning score between those who belong to sports club and those who do not belong to a sports club only in the high damage groups. These findings might suggest the following:1) the physical activity level of adolescents living in disaster areas tends to be low regardless of the damage situation, 2) the relation between sport club activity in school and physical activity level in the high damage group is stronger than the low damage group, 3) sports club activity affects an emotional context positively only in the high damage group.
