The goal of the research was to determine the correlation between physical activity and motor functions in girls practising volleyball. The research has been conducted on a sample of 40 pupils ranging from the second to the fourth grade of elementary school, aged from 8 to 11, who practise volleyball at the Womens' Volleyball Club Ivanec. The variables sample for evaluation included the measurement of anthropometric characteristics (body height, body weight, body mass index, body mass percentile value), followed by motor functions (standing long jump, forward bend with legs slightly spread, shuttle run, sit-ups in 30 seconds) and functional limitations (running for 3 minutes). The physical activity was tested through a questionnaire, "Fels physical activity questionnaire for children", that was completed by girls. Results obtained have shown that most girls meet the physical activity recommendations, i.e., 70% of them, while a smaller share of girls, 30%, do not meet the recommendations. It has also been established that there is no significant correlation between physical activity and anthropological features. The correlation between sedentary activities, such as reading books and watching the TV, and anthropological features indicates a negative correlation. To be more precise, girls who participate more in sedentary activities have worse results on the test of situps in 30 seconds. The remainder of the results has shown that there is no significant correlation between physical activity and anthropological features, more specifically, the hypotheses that indicate a correlation between physical activity and motor functions are not accepted.