Abstract
The purpose of this study was to examine the effects of physical fitness in alleviating anxiety and stress
in high school students. One hundred seventeen high school students from O high school participated in
this intervention study. Physical fitness test of all the participants was carried out 5 times in their physical
education class. Anxiety and stress levels in the students before and after the interventions were recorded
using The State-Trait Anxiety Inventory for Children（STAIC）and Stress Response scale（SRS-18）,
respectively. The results based to the STAIC measurements revealed that anxiety improved significantly in
high stressor group. The results of SRS-18 tests also showed improvements in high stressor group.
Improvements in Lethargy among second grade students of high school was found to be better compared
to the first grade students of high school in middle stressor group. The results suggest that perceived high
stressor group was positively affected by physical fitness. The effects indicated differential change in
grade among different stressor groups.
