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Introduction: The mental health (MH) of college students has long been a crucial concern for families, educational institutions, and society. Extensive research has demonstrated the influential role of exercise motivation in shaping MH. However, further investigation is warranted to ascertain which types of exercise motivation may have more influence on the MH of college students. The present study examined the direct effects of five distinct types of exercise motivation, namely health motivation (HM), appearance motivation (APM), fun motivation (FM), ability motivation (ABM), and social motivation (SM) on MH. Additionally, the study explored the potential mediating role of physical exercise (PE) in these relationships. Methods: An cross-sectional study design was employed. A total of 433 Chinese college students participated in the study and completed our questionnaires, which included the Exercise motivation scale (EM scale), the Physical exercise scale (PE scale), and the Mental health scale (MH scale). Results: The findings revealed a significant and positive relationship between all five categories of exercise motivation and the MH of college students. Specifically, FM was found to have the most pronounced impact on MH, followed by HM, ABM, SM, and APM, in descending order of influence. Furthermore, the impacts of HM, FM, ABM, and SM on MH were found to be partially mediated by PE. However, the association between APM and MH was entirely mediated by PE. Discussion: The present study contributes to enhancing the comprehension of the underlying mechanisms behind different exercise motivations in relation to PE and MH. Additionally, it offers practical implications for developing intervention strategies for improving the MH of college students.
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Due to the repeated changes in the COVID-19 pandemic, we live in an era of various uncertainties that raise future anxiety and behavioral addiction problems. According to the Protection Motivation Theory (PMT), the present study attempted to explore the impact of COVID-19 intolerance of uncertainty (COVID-19 IU) on internet addiction (IA) among college students and the mediating role of future anxiety (FA) by constructing a mediating model. A questionnaire survey was conducted on 679 Chinese college students and PROCESS 3.5 was utilized to test the hypotheses. The results indicated that the COVID-19 IU was significantly positively correlated with IA and FA, and FA was significantly positively correlated with IA. COVID-19 IU had a significant positive predictive effect on IA; FA played a complementary partial mediating role between COVID-19 IU and IA. The results supported the PMT, which not only enriched our understanding of FA under uncertain life circumstances, but also deepened our understanding of the potential mechanisms of the effects of IA. Finally, discussions and suggestions were presented based on the results.
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Ansiedade , COVID-19 , Transtorno de Adição à Internet , Estudantes , Humanos , COVID-19/psicologia , COVID-19/epidemiologia , Estudantes/psicologia , Masculino , Transtorno de Adição à Internet/psicologia , Transtorno de Adição à Internet/epidemiologia , Incerteza , China/epidemiologia , Ansiedade/psicologia , Ansiedade/epidemiologia , Feminino , Adulto Jovem , Universidades , Inquéritos e Questionários , Adulto , Pandemias , Adolescente , SARS-CoV-2 , Comportamento Aditivo/psicologia , Comportamento Aditivo/epidemiologia , InternetRESUMO
Based on social cognitive theory and gender differences, this study verified a moderated mediation model to explore the relationship between the COVID-19 related stress (CRS) and social network addiction (SNA) and evaluate the mediating role of fear of missing out (FoMO) and the moderating role of gender. A questionnaire survey was conducted, including 702 Chinese university students.This study used PROCESS to test the hypothesis model.The results showed that the CRS significantly and positively affected the SNA of college students and FoMO played a complementary mediating role. Moreover, the analysis of the moderated mediation model showed that gender moderated the relationship between FoMO and SNA; the effect of FoMO was stronger on the SNA of male college students than that of females. The results not only enhanced our understanding of the internal influencing mechanism of the relationship between CRS and SNA but also considered gender differences. In addition, some suggestions were proposed.
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COVID-19 , Transtorno de Adição à Internet , Rede Social , Estresse Psicológico , Feminino , Humanos , Masculino , Povo Asiático , Comportamento Aditivo/epidemiologia , Comportamento Aditivo/psicologia , China/epidemiologia , COVID-19/epidemiologia , COVID-19/psicologia , Estresse Psicológico/epidemiologia , Estudantes/psicologia , Universidades , Transtorno de Adição à Internet/epidemiologia , Transtorno de Adição à Internet/psicologiaRESUMO
The COVID-19 pandemic has coincided with a global increase in problematic social networking sites use (PSNSU). By drawing on transactional stress theory and applying the stressor-strain-outcome (SSO) framework, we proposed and verified a chain mediation model to explore the mediating roles of fear of missing out (FoMO) and future anxiety (FA) in the relationship between COVID-19 lockdown stress (CL stress) and PSNSU. Our sample of 670 quarantined college students in China responded to a COVID-19 student stress questionnaire, a social network addiction scale, a fear of missing out scale, and a dark future scale. The results revealed that (1) CL stress significantly positively predicted PSNSU, (2) both FoMO and FA mediated the relationship between CL stress and PSNSU, (3) FoMO significantly positively predicted FA, and (4) a full chain mediation was observed between CL stress and PSNSU.
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COVID-19 , Humanos , COVID-19/epidemiologia , Controle de Doenças Transmissíveis , Pandemias , China/epidemiologia , Rede Social , EstudantesRESUMO
MicroRNA (miRNA) is a promising biomarker for the diagnosis, monitoring, and prognostic evaluation of diseases, especially cancer. The existing miRNA detection methods usually need external instruments for quantitative signal output, limiting their practical applications in point-of-care (POC) settings. Here, we propose a distance-based biosensor through a responsive hydrogel, in combination with a CRISPR/Cas12a system and target-triggered strand displacement amplification (SDA) reaction for visual quantitative and sensitive measurement of miRNA. The target miRNA is first converted into plenty of double-stranded DNA (dsDNA) via target-triggered SDA reaction. Then, the dsDNA products trigger the collateral cleavage activity of CRISPR/Cas12a, leading to the release of trypsin from magnetic beads (MBs). The released trypsin can hydrolyze gelatin, and hence the permeability of gelatin-treated filter paper is increased, resulting in a visible distance signal on a cotton thread. Using this system, the concentration of the target miRNA can be quantified visually without any assistance of instruments, and a detection limit of 6.28 pM is obtained. In addition, the target miRNA in human serum samples and cell lysates can also be detected accurately. Owing to the characteristics of simplicity, sensitivity, specificity, and portability, the proposed biosensor provides a new tool for miRNA detection and holds great promise in POC applications.
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Técnicas Biossensoriais , MicroRNAs , Humanos , Sistemas CRISPR-Cas/genética , Gelatina , Tripsina , Alimentos , MicroRNAs/genéticaRESUMO
This study focused on COVID-19 perceived risk and Internet addiction among Chinese college students during the lockdown. On the basis of the Social Cognitive Theory, this study proposed a mediating model to evaluate the mediating role of difficulties in regulating emotion between the COVID-19 perceived risk and Internet addiction. A questionnaire survey was conducted among 690 college students during the COVID-19 lockdown in China. The results showed that the COVID-19 perceived risk was significantly positively associated with Internet addiction (r = 0.236, p < 0.001) and difficulties in emotion regulation (r = 0.220, p < 0.001), difficulties in emotion regulation was significantly positively associated with Internet addiction (r = 0.368, p < 0.001). The COVID-19 perceived risk had a significant and positive predictive effect on Internet addiction (ß = 0.233, p < 0.001) among Chinese college students. The analysis of the mediation model showed that difficulties in emotion regulation partially mediated the relationship between COVID-19 perceived risk and Internet addiction (indirect effect value was 0.051 with 95% Confidence Interval ranging from 0.027 to 0.085). The findings not only enhanced our understanding of the internal influence mechanism of COVID-19 perceived risk on Internet addiction but also provided a practical basis for college education works. Finally, discussions and suggestions were provided on the basis of the results.
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Comportamento Aditivo , COVID-19 , Humanos , Transtorno de Adição à Internet , Comportamento Aditivo/epidemiologia , Comportamento Aditivo/psicologia , COVID-19/epidemiologia , Controle de Doenças Transmissíveis , Estudantes/psicologia , China/epidemiologia , InternetRESUMO
During the COVID-19 epidemic, quarantine and financial disadvantages might exacerbate social anxiety among impoverished college students. Based on the hardiness model and the social support buffering model, the present study proposed and verified a dual moderation model to investigate the effects of hardiness on social anxiety and the moderating roles of gender and perceived social support. The hardiness scale, the perceived social support scale, and the social anxiety subscale of the self-consciousness scale were administered to 673 Chinese college students aged 18 to 23 years who were recognized as impoverished by the Chinese authorities and provided with funding. The results revealed that (1) hardiness had a significant negative effect on social anxiety, (2) perceived social support moderated the effect of hardiness on social anxiety, and (3) gender moderated the effect of hardiness on social anxiety. The dual moderated model proposed in the study provides practical implications for helping impoverished college students cope with social anxiety during the COVID-19 pandemic.
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School support is of great significance to students' academic quality and overall physical and psychological development. However, there is still ambiguity in the English and Chinese studies on the concept and measurement tools of school support. The data for this study were sourced from the literature on school support included in the China National Knowledge Network (CNKI) and Web of Science (WOS) from 2000 to 2021. A systematic literature review was conducted through literature inclusion and data extraction according to the PRISMA guidelines. Finally, 36 core-journal articles with high academic reference value and authority are identified, including seven in Chinese and 29 in English. The following results were obtained: (1) Related research in both Chinese and English showed an overall increasing trend. (2) The concepts and measurement tools of school support were not clear, and most studies used concepts and measurement tools of "social support" or "school climate" as substitutes for school support. (3) Most of the previous studies were based on social support theory, ecological system theory, and school climate theory. (4) The research mainly adopts quantitative research methods and focuses on special student populations or students below the high school level. Overall, previous studies indicated that school support has a positive impact on student development. Therefore, future research should be broadly extended to the knowledge system in higher education. On the basis of clarifying the concept of school support, it is necessary to try to develop and validate school support measurement tools with great reliability, validity, and general applicability to provide a practical reference for educators around the world.
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This study used the Social Cognitive Theory and Broaden-and-Build Theory to propose and validate a chain mediation model. In total, 417 Chinese college students were studied to explore the effects of parent-child relationships on their academic performance. In addition, we investigated the chain-mediating roles of gratitude and psychological capital. The results showed that (1) the parent-child relationship significantly and positively affected the academic performance of college students; (2) gratitude partially mediated the parent-child relationship and the academic performance of college students; (3) psychological capital partially mediated the parent-child relationship and the academic performance of college students; and (4) gratitude and psychological capital exerted a chain-mediating effect between parent-child relationships and the academic performance of college students. Based on the results of the study, we conclude that the parent-child relationship not only directly affects the academic performance of college students but also indirectly affects it through the chain mediation of gratitude and psychological capital. Moreover, we proposed reasonable suggestions on how colleges and universities can guide students to deal with parent-child relationships, strengthen gratitude education, and improve psychological capital.
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This study explored the chain-mediating roles of optimism and mental health in the relation of self-directed learning with academic performance among college students in Wuhan during long-term online teaching. In total, 473 valid responses were obtained from students at three Wuhan universities. Self-directed learning, optimism, mental health, and academic performance scales were used as measurement instruments; a 5-point Likert scale was employed for all items. To examine the instruments' reliability and validity, a measurement model was constructed; moreover, structural models were employed for assessing the chain mediation model. This study confirmed that self-directed learning was a positive predictor of academic performance in Wuhan college students. Optimism and mental health were two mediators and partially jointly mediated the relation of self-directed learning with academic performance. The results revealed that self-directed learning only partially positively predicted academic performance. The aforementioned relationship was partially mediated by optimism and mental health, highlighting the essential roles of optimism and mental health in the learning and learning outcomes of Wuhan college students.