Highlights University students possessed high-risk perceptions during the outbreak. The COVID-19 pandemic impacted the mental health of university students. Targeted interventions tailored to university students should be provided.

The novel coronavirus disease 2019 (COVID-19) pandemic has become a challenge for adolescents in China. This study aimed to explore the relationship between academic anxiety and self-esteem in Chinese candidates preparing for the college entrance examination during the COVID-19 pandemic and to examine the mechanism of mediating effect of self-regulated learning ability. Methods: A cross-sectional study was conducted among 293 college entrance examination candidates (including 170 females) from two middle schools in China using a voluntary, web-based, and anonymous questionnaire implemented via the Questionnaire Star app during COVID-19 prevalence in 2020. Results: This study found that 1) students in the high and low academic anxiety groups had different levels of self-regulated learning ability and self-esteem, 2) the academic anxiety, self-regulated learning ability, and self-esteem levels of students were significantly correlated and 3) after controlling the two independent variables of gender and subject type, academic anxiety had a significant negative predictive effect on self-esteem, and self-regulated learning ability played a mediating role between academic anxiety and self-esteem, where the mediating effect was 18.6%. Conclusion: Based on the observations of the present study, self-regulated learning capacity was a mediator between academic anxiety and self-esteem. These findings suggest an underlying process by which low academic anxiety may increase self-esteem in candidates preparing for the college entrance examination by increasing self-regulated learning ability.

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This cross-sectional study compared the physical fitness and mental health status of 140 school-age children who participated in sport-specific training with 180 age-matched peers. All the participants were grouped by sport-specific training frequencies in extracurricular time into the following: (i) high sports training frequency group (HFG): training three to five times per week (n = 77, mean [SD] age: 9.60 [0.12] years); (ii) low sports training frequency group (LFG): training once per week (n = 63, mean [SD] age: 9.88 [0.14] years); and (iii) control group (CG): maintaining routine life (n = 180, mean (SD) age: 9.77(0.09) years). Physical fitness status, including body composition (body mass index), endurance (vital capacity; 50 × 8 round trip), speed and agility (50 m sprint), flexibility (sit-and-reach), coordination (1-min rope skipping), and core strength (1-min sit-ups) as well as mental health status was measured. Overall, the results showed that Grade 3 to 4 HFG students showed better total physical fitness scores than the LFG and CG students. Grade 2 and 5 participants in the three groups showed no significant difference in the total physical fitness score. Children in HFG performed better in several PF indicators (i.e., cardiopulmonary function, flexibility, core strength, and coordination) than those in LFG and CG, and children in LFG got a higher score than those in CG on a testing item of 1-min rope skipping. The mental health test results showed that HFG performed better than LFG and CG. The results indicated that participating in sport-specific training 3–5 times per week was beneficial for children’s physical and mental health. Additionally, there was a weak and negative correlation between physical fitness and mental health in LFG and CG, while no correlation was found between physical fitness and mental health in HFG.