Study Design and Data Source: The research used a cross-sectional design, analyzing data from the 2012 National Health and Nutrition Examination Survey National Youth Fitness Survey. This design helps understand the data at one point in time across a large, diverse sample. Participants: The study included data from 1,640 children aged between 3 to 15 years. Methods Used: Multivariate logistic regression models were employed. This statistical method is useful for understanding the relationship between multiple independent variables (like physical activity levels, age, gender) and a dependent variable (like obesity status), while adjusting for potential confounders. Key Findings: Physical Activity and Obesity: There was a negative association between physical activity and the risk of obesity, with an odds ratio (OR) of 0.93 and a 95% confidence interval (CI) of [0.87, 0.98]. This suggests that higher levels of physical activity are associated with a lower risk of being obese in children. Functional Limitations: Children who were obese or overweight were more likely to have functional limitations (ORs = 1.58-1.61), indicating that obesity or overweight status can impair physical function. Enjoyment of Physical Activity: Interestingly, the enjoyment of participating in physical activities was not significantly different between obese or overweight children and those