RESUMO Introdução: A gestão do campus universitário no contexto do COVID-19 faz com que a saúde mental dos universitários chame muita atenção. Objetivo: Explorar os efeitos do exercício físico sob o COVID-19 sobre a qualidade do sono e o humor dos estudantes universitários. Métodos: Foram selecionados 1983 estudantes universitários da Universidade de Aviação Civil da China, e seu estado de exercício físico, qualidade do sono e estado emocional foram medidos por um questionário. Resultados: O exercício físico tem um efeito positivo significativo no humor e na qualidade do sono dos estudantes universitários, e a qualidade do sono tem um efeito significativo em seu humor. Não há diferença de gênero no humor e na qualidade do sono. A quantidade de exercício físico tem diferença significativa na qualidade do sono e no humor. Em comparação com os alunos que fazem muito exercício físico, os alunos que fazem muito exercício físico têm maior qualidade de sono e maior capacidade de controle emocional. Conclusão: Este estudo pode fornecer referência para que as universidades realizem a educação em saúde mental durante o período especial de prevenção e controle de epidemias. Nível de evidência II; Estudos de Diagnóstico — Investigando um Teste de Diagnóstico.

Introduction: The management of university campuses in the context of COVID-19 makes the mental health of college students draw much attention. Objective: To explore the effects of physical exercise under COVID-19 on sleep quality and mood of college students. Methods: 1983 college students from The Civil Aviation University of China were selected, and their physical exercise state, sleep quality, and emotional state were measured by a questionnaire. Results: Physical exercise has a significant positive effect on college students’ mood and sleep quality, and sleep quality has a considerable impact on their mood. There is no gender difference in mood and sleep quality. The amount of physical exercise has a significant difference in sleep quality and mood. Compared with the students who do a lot of physical exercises, those who do a lot of physical exercises have higher sleep quality and more vital stronger emotional control ability. Conclusion: This study can provide a reference for universities to carry out mental health education during the particular period of epidemic prevention and control. Level of evidence II; Diagnostic Studies—Investigating a Diagnostic Test.

Introduction: Exercise commitment plays an explanatory and guiding role in an individual's adherence to exercise behavior. However, exercise commitment in recreational situations is poorly studied. Objective: Develop a sporting and recreational behavior questionnaire based on the commitment scale for Chinese urban residents. Methods: Two stages were conducted, the first with a sample of 453 individuals to explore and verify the determinants of behavioral commitment in recreational sport and the fit of the framework, and the second with a sample of 786 individuals to investigate the relationship between behavioral commitment in recreational sport and its determinants. Results: Behavioral commitment in-play sport included five determinants: ‘motivation to participate’, ‘personal involvement’, ‘choice to participate’, ‘opportunity to participate’, ‘social support’. The constructed model showed a good fit. The factors: ‘motivation to participate’, ‘personal engagement’ and ‘interest to participate’, showed a significant positive association with engagement and a significant negative association with a choice to participate. Conclusion: The resulting model shows characteristics of recreational sport behavior and can be used as a measure of commitment to recreational sport behavior among residents of a Chinese city. Level of evidence II; Diagnostic Studies- Investigating a Diagnostic Test.