The purpose of the current study was to explore the physical activity and screen time status among Chinese adolescents during the coronavirus disease (COVID-19) lockdown and their association with mood disturbance and conflicts with parents. A total of 1,680 7th to 12th grade students enrolled at a large middle-high school located in Southwest China completed an online survey measuring mood states, physical activity, screen time, conflicts with parents, and body height and weight. Physical activity, particularly of at least 150 minutes' duration each week, significantly decreased the likelihood of negative mood among adolescents during lock-down. Screen time, specifically other than that spent on online study, had a negative association with mood, after controlling for the relevant variables (i.e., physical activity and body mass index). Less screen time and accumulating 150 minutes of physical activity were associated with fewer conflicts with parents. With the continuing COVID-19 pandemic, local school districts, school leaders, and health professionals should develop greater awareness of potential problems with, and engage parents in developing specific guidance on controlling, screen time and promoting physical activity in a time-sensitive manner. [ Journal of Psychosocial Nursing and Mental Health Services, 59 (4), 14–20.]
It has been recognized that myocardial apoptosis is one major factor in the development of heart dysfunction and autophagy has been shown to influence the apoptosis. In previous studies, we reported that anti-β1-adrenergic receptor autoantibodies (β1-AABs) decreased myocardial autophagy, but the role of decreased autophagy in cardiomyocyte apoptosis remains unclear. In the present study, we used a β1-AAB-immunized rat model to investigate the role of decreased autophagy in cardiomyocyte apoptosis. We reported that the level of autophagic flux increased early and then decreased in an actively β1-AAB-immunized rat model. Rapamycin, an mTOR inhibitor, restored myocardial apoptosis in the presence of β1-AABs. Further, we found that the early increase of autophagy was an adaptive stress response that is possibly unrelated to β1-AR, and the activation of the β1-AR and PKA contributed to late decreased autophagy. Then, after upregulating or inhibiting autophagy with rapamycin, Atg5 overexpression adenovirus or 3-methyladenine in cultured primary neonatal rat cardiomyocytes, we found that autophagy decline promoted myocardial apoptosis effectively through the mitochondrial apoptotic pathway. In conclusion, the reduction of apoptosis through the proper regulation of autophagy may be important for treating patients with β1-AAB-positive heart dysfunction.
22 August 2013 in Research Quarterly for Exercise and Sport
Purpose: Chinese female international students (CFIS) have been identified as one of the least physically active groups in the United States. In an effort to better understand this situation, this study's purpose was to examine CFIS in American higher education in terms of the meaning they assigned to physical activity and facilitators and barriers they experienced with regard to physical activity participation. Method: Twenty CFIS from a university in the Northwest region of the United States were recruited and interviewed. All of the interviews were conducted in Mandarin Chinese and translated and transcribed into English. The 1-on-1 semistructured interviews lasted between 45 min and 60 min each. Data were analyzed by NVivo8. Results: In terms of meaning, physical activity provided the participants with a break from their academic work, allowed them some alone time, and taught them a process for accomplishing other things in their lives. Major facilitators included social influences, ample available resources, their changing perceptions of femininity, and the need to improve or maintain health. Barriers included a lack of time, low self-efficacy, limited social support, cultural barriers, and a lack of “how-to” information. Conclusions: Understanding the physical activity experiences of CFIS is an important step in the process of promoting their long-term health and well-being. It may behoove universities with growing Chinese international student populations to add more cross-cultural content into their curriculums and fitness programs, increase awareness of cultural differences on campus, and increase accessibility to information in an effort to remove physical activity participation barriers experienced by CFIS.
Aim and objectives: In the USA, undergraduate students gain more weight in the first year in college than at any other point in their lives. However, the factors that predict their weight gain are unknown. The purpose of this study was to explore the predictors of weight gain among first-year college students at a US college over a 3-month period. Design: Correlational longitudinal study using baseline and follow-up self-report survey data. Setting: A private college in the Northeastern USA. Methods: A total of 110 first-year college students were invited to complete both baseline and follow-up surveys 3 months apart. The baseline survey examined participants’ knowledge, self-efficacy, attitudes, intentions and practices regarding physical activity, diet and stress management. The follow-up survey evaluated barriers to diet and exercise practices. Results: Knowledge, attitudes, intentions and behavioural practices did not predict weight change. However, students who gained weight perceived significantly more personal and environmental barriers than those who did not change weight on the following variables: lack of motivation to exercise, no time to eat healthily, perception of lack of healthy food options and impact of bad weather on exercise. Conclusion: Even living in the same college environment, students perceive environmental barriers differently, which was associated with body weight gain. Health education and promotion professionals should guide students to overcome barriers to healthy eating and exercise, as well as making the campus environment more conducive to healthy behaviour.
This study explored the effects of an 8-week peer coaching program on physical activity (PA), diet, sleep, social isolation, and mental health among college students in the United States. A total of 52 college students were recruited and randomized to the coaching (n = 28) or the control group (n = 24). The coaching group met with a trained peer health coach once a week for 8 weeks focusing on self-selected wellness domains. Coaching techniques included reflective listening, motivational interviews, and goal setting. The control group received a wellness handbook. PA, self-efficacy for eating healthy foods, quality of sleep, social isolation, positive affect and well-being, anxiety, and cognitive function were measured. No interaction effects between time and group were significant for the overall intervention group (all p > 0.05), while the main effects of group difference on moderate PA and total PA were significant (p < 0.05). Goal-specific analysis showed that, compared to the control group, those who had a PA goal significantly increased vigorous PA Metabolic Equivalent of Task (METs) (p < 0.05). The vigorous METs for the PA goal group increased from 1013.33 (SD = 1055.12) to 1578.67 (SD = 1354.09); the control group decreased from 1012.94 (SD = 1322.943) to 682.11 (SD = 754.89); having a stress goal significantly predicted a higher post-coaching positive affect and well-being, controlling the pre-score and other demographic factors: B = 0.37 and p < 0.05. Peer coaching showed a promising effect on improving PA and positive affect and well-being among college students.