A152: Effect of Physical Activity Intervention in Kindergarten MobileArea on Children's Lower Limb Motor Ability

<bold>Background/Purpose:</bold> Displacement skills are a very important basic motor skill in early motor development of young children, and the motor quality related to lower limbs is also closely related. Based on the design idea of regional physical activities, this study designed the physical game courses for the outdoor mobile area of kindergartens, to provide reference for improving children's lower limb motor ability. <bold>Method:</bold> Kindergarten children were selected as study participants, including 33 children in the experimental group and 35 children in the control group. The experimental group conducted an 8-week regional sports game course, 3 times a week for 30 minutes each time (practice density of about 30%, load of about 60%); The control group was engaged in regular physical activities in the kindergarten. Before and after the intervention, the children's lower limb-related motor qualities (10-meter turn-back run, cross-quadrant jump, standing long jump, two-legged continuous jumping) and displacement skills (TGMD-2 locomotor subscale) were tested. The paired t-test and the independent-sample t-test were used for data analysis to test the differences between the groups before and after the intervention and between the two groups, with P &lt; 0.05 defining significant differences. <bold>Results:</bold> There were no significant differences in lower limb quality and displacement skills between the control group and the experimental group before intervention (P &gt; 0.05). Before and after intervention, only the 10-meter turn-back run performance of the control group was improved (P &lt; 0.05). Except for the cross-quadrant jump, there were significant differences in the lower limb quality indices in the experimental group (P &lt; 0.05), and the scores of standing long jump, one-legged hop, and side slide step were improved in displacement skills (P &lt; 0.05). After the intervention, the experimental group performed better than the control group (P &lt; 0.05) in standing long jump, cross-quadrant jump, and two-legged continuous jumping, and the scores of running, standing long jump, one-legged hop, and side slide step were higher than those in the control group (P &lt; 0.05). <bold>Conclusion/Discussion:</bold> The 8-week physical activity course intervention in the mobile area effectively improved the children's lower limb motor quality and displacement skills. The results showed that the systematic physical activity curriculum for children promoted the development of children's physical fitness and motor maturity in a more targeted manner.