Associations between class-level factors and student physical activity during physical education lessons in China.

Background: The purpose of this study is to explore the association between class-level factors, such as lesson start time, class size, lesson location, PE content, and PE context, and student engagement in moderate-to-vigorous physical activity (MVPA) during PE lessons in both elementary and middle schools.

Methods: A total of 284 PE lessons from ten schools in Shanghai, Eastern China, were included in the study. Students' MVPA during PE lessons was recorded using accelerometry, and lesson context was evaluated using the System for Observing Fitness Instruction Time (SOFIT).

Psychological needs satisfaction, self-determined motivation, and physical activity of students in physical education: Comparison across gender and school levels.

Findings support the applicability of SDT in understanding and promoting the physical activities amongst Chinese school students in PESDI was positively related to school students' MVPA level. The satisfaction of autonomy, competence and relatedness towards PE was positively associated with students' SDI.The proposed motivational sequence for adolescent MVPA in PE were similar for male and female students.

Motivational climate, need satisfaction, self-determined motivation, and physical activity of students in secondary school physical education in China.

Background: On the basis of the integration constructs from self-determination theory (SDT) and achievement goal theory (AGT), this study aims to investigate the relationship among classroom motivational climate from four perspectives (i.e. autonomy support, relatedness support, task-involving climate and ego-involving climate), three psychological needs (i.

Swimming improves platelet dysfunction in mice fed with a high-fat diet.

Background: We investigated the effects and mechanism of swimming on platelet function in mice fed with a high-fat diet.

Material And Methods: Mice were randomly divided into the control group (NC), high-fat group (HF), and high-fat diet combined with swimming group (FE). The FE group swam for 60 min a day, 5 days a week, for 8 weeks.