Objectives Research has shown that having adequate quantity and quality of physical activity can contribute to the health and well-being of children. Nonetheless, existing tools to measure these constructs in children have limitations in terms of their objectivity and scalability. In this study, we provide criterion validity evidence of two systems built on commercially available sensors (ie, gyroscopes and infrared cameras), designed to measure children's moderate-to-vigorous physical activity and fundamental movement skill proficiencies. Design Cross-sectional. Setting Primary schools in Hong Kong. Participants Data from 30 (age=8.55±1.25 years) and 1174 (age=9.15±1.63 years) children were included for the validation of physical activity and fundamental movement skills measures, respectively. Children's outcomes were simultaneously measured using the developed systems and existing, well-established measures (accelerometers and expert ratings). Results We found a strong correlation between physical activity outcomes measured using our developed system and accelerometers (Pearson r=0.795). Motor skill proficiency scored using our real-time rating system had strong agreement with expert ratings (percentage agreement=84%-94%, kappa=0.661 to 0.859). Discussion Results of the current study supported the application of the respective systems in physical education and large-scale research studies. Collection of such data at mass levels could help researchers depict the complex relation between children's quantity and quality of physical activity. Copyright © 2022 Author(s) (or their employer(s)).

Purpose: Evidence demonstrates that many school children fail tomaster fundamental movement skills (FMS). Little is known about the teaching and learning of FMS in Hong Kong. This study aimed to capture voices from both teachers and students to better understand the current FMS practices in primary physical education Methods: Semistructured interviews with physical education teachers and focus groups with students were conducted. Thematic analysis of teacher transcriptions was performed. Student focus groups were analyzed using a framework approach, guided by TARGET (i.e., Task, Autonomy, Recognition, Grouping, Evaluation, and Time). Results: Several "teacher"level themes were developed: Self-efficacy (mis)judgment, limited pedagogical content knowledge, ineffective instructional and assessment strategies, insufficient teacher training, and deprioritization of skill development in physical education. Students perceived the need for a more student-centered approach to the teaching of FMS. Conclusions: Results highlighted the need for a different approach to initial and continuous teacher education in FMS. Further investigation into the most effective forms of teacher education is necessary, in order to improve the teaching and learning of FMS in schools. Copyright © 2023 Human Kinetics, Inc.

During the COVID‐19 pandemic, many preschool‐aged children were forced to remain indoors due to social distancing measures and school closures. In this study, we examined how children’s movement behaviors (sedentary behaviors, physical activity, and sleep) were affected by the pandemic. Children’s (N = 25, age = 4.4 years, SD = 0.3) movement behaviors were measured before and after the COVID outbreak, respectively. Data collected using accelerometers were analyzed using compositional data analyses. A significant change in the overall time‐use composition (F = 5.89, p = 0.002) was found. Results suggested that children spent more time sleeping (8% increase) and in moderate‐to‐vigorous physical activity (16% increase), with less time spent in sedentary behaviors (9% decrease). However, parent reports suggested that children were less active and had more screen time. In conclusion, the current evidence suggests that children’s physical activity is not negatively impacted by the pandemic. However, the continuous surveillance of movement behaviors of young children during the pandemic is needed. Copyright © 2021 by the authors. Licensee MDPI, Basel, Switzerland.