Purpose: This study assessed the associations of motor skill competence with physical activity and physical self-perception of adolescents with autism spectrum disorder (ASD). Study design: Cross-sectional study. Methods: A total of 63 male adolescents, aged 12–18 years, with ASD participated in the study. The Bruininks–Oseretsky Test of Motor Proficiency-Second Edition and the Chinese version of the Physical Self-Perception Profile were administered. Physical activity was assessed using a uniaxial accelerometer. Results: The main findings were that (a) both moderate-to-vigorous physical activity and self-perceived physical condition were positively related to manual coordination (MC) and strength and agility (SA); (b) moderate-to-vigorous physical activity was the only predictor of MC and accounted for 14% of the variance; and (c) perceived physical condition explained 16% of the variance in SA, and moderate-to-vigorous physical activity and perceived physical condition together accounted for 26% of the SA. Conclusion: Future interventions aimed at improving motor skill competence in adolescents with ASD should focus on improving the time spent on moderate-to-vigorous physical activity and developing a positive perceived physical condition.Implications for rehabilitation Less than half of the participants with ASD accumulated at least 60 min of daily moderate-to-vigorous physical activity. Of the participants with ASD, only 19% had clinical levels of total motor impairments. Activities that promote successful moderate-to-vigorous physical activity and support positive physical self-perception (i.e., physical condition) are most likely to develop motor skill competency in adolescents with ASD.
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