This study aims to implement a new family-based health behavior community program to increase time spent outdoors and physical activity among Singapore children aged 6 to 12 years in a 1-year randomized clinical trial. 300 children from 250 families will be randomly assigned to either a family-based intervention or no intervention. The family-based intervention comprises structured weekend outdoor activities organized by National Parks and incentives for children to wear a pedometer and increase their daily steps. Families who meet their monthly step and outdoor activity goals will receive a range of prizes and incentives. Both groups will receive brochures on the National Myopia Prevention Program and physical activity. The success of the intervention will be evaluated through light meters, 7-day outdoor diaries, questionnaires documenting outdoor time and myopia; as well as pedometer steps, walking tests, and body mass index. A community-based intervention will be developed to improve the health of Singapore children by increasing outdoor time and physical activity to prevent myopia and obesity.

To develop, implement, and evaluate a novel incentive-based family intervention to increase time spent outdoors and physical activity among children aged 6 to 12 years in a 1-year randomized controlled trial.

Inclusion Criteria:

• Children between 6 and 12 years of age with no known health problems preventing them from staying outdoors or walking for physical activity will be included as long as they are Singapore citizens or permanent residents.
• Both myopic and non-myopic children will be included

Exclusion Criteria:

• Children with medical conditions such as Type 1 diabetes, severe asthma, cancer or mental illness will be excluded.