These data suggest that myonectin may be a useful marker in predicting the development of prediabetes and diabetes.

Objectives: This study aimed to explore the relationship between body image, selfefficacy, self-esteem, and sports participation by gender, grade, and specialty and then to provide a reference for promoting participation in sports and physical activities in college students. Methods: Using stratified random sampling, undergraduate students in western China were selected as participants. The data obtained in this study were processed by SPSS 19.0 and AMOS 21.0 statistical software. Results: Body image was significantly positively correlated with self-efficacy, selfesteem, and sports participation. Self-efficacy was significantly positively correlated with self-esteem and sports participation. Self-esteem was significantly positively correlated with sports participation. Body image had a direct effect on sports participation, with an effect value of 0.124. Furthermore, the mediating effects of self-efficacy (0.079) and self-esteem (0.108) were significant in the relationship between body image and sports participation. Meanwhile, the chain mediating role of self-efficacy-self-esteem was also obvious (0.035). Conclusion: Body image, self-efficacy, and self-esteem had significant influence on sports participation in college students. At the same time, the mediating effect of self-efficacy, self-esteem, and self-efficacy-self-esteem on body image and sports participation were established, and self-esteem was the key factor to sports participation.

Background and Aims FSTL-1 is considered to be an adipokine or myokine that could be a potential regulator of metabolism. Our purpose is to investigate the relationship between circulating FSTL-1 levels and insulin resistance (IR) in type 2 diabetes mellitus (T2DM) and to identify the regulatory factors. Methods FSTL-1 expression in C57BL/6J and db/db mice was examined by qRT-PCR and Western blots. Serum FSTL-1 levels were measured by ELISA in 298 patients with T2DM and 202 healthy controls. Changes in the circulating FSTL-1 level were observed during the OGTT, EHC, lipid infusion, acute exercise, and cold-exposure test. Results We found that FSTL-1 protein expression in the adipose tissue of db/db mice was significantly higher than that of WT mice. Importantly, circulating FSTL-1 levels in T2DM and overweight/obese subjects were higher than those in healthy and lean subjects, and was related to HOMA-IR, adiponectin, and obesity- and metabolism-related parameters. In the intervention study, 45 minutes of physical activity was found to significantly increase the circulating FSTL-1 concentration in young, healthy subjects. Further, FSTL-1 protein expression in adipose tissue rose dramatically in response to physical activity in mice. Hyperinsulinemia during EHC and acute elevated FFA induced by lipid infusion resulted in a significant decrease in the circulating FSTL-1 levels. However, no change was found in the circulating FSTL-1 levels in response to the oral glucose challenge or cold exposure test. Conclusions FSTL-1 may be an adipo-myokine associated with insulin resistance and physical activity, and the circulating FSTL-1 levels are increased in patients with T2DM.

Background: College students are an inexhaustible driving force for social development, and college students with good physical and psychological qualities can better adapt to changes in the external environment. The purpose of this study was to explore the intrinsic relationship of physical activity and emotional intelligence among college students and to determine the primary role of self-efficacy in their relationships.Methods: Eight hundred thirty-five college students from two comprehensive universities in Southwest China, whose average age was 20.13 ± 1.06 years old, were investigated using the Physical Activity Rating Scale (PARS-3), Chinese Emotional Intelligence Scale (EIS), General Self-Efficacy Scale (GSES), and other measuring tools. SPSS 22.0 software was used to analyze and process the data with Independent sample t-test, One-way ANOVA, Pearson correlation analysis, and regression analysis, and Amos 21.0 software was used to build the structural equation model. Results:(1) In terms of physical activity amount, self-efficacy, and emotional intelligence, male college students scored higher than female students. Furthermore, college students in humanities and social sciences had lower self-efficacy. In contrast, senior students had the lowest levels of physical activity and self-efficacy, and there was no discipline or grade distribution difference in emotional intelligence. (2) Physical activity amount was positively correlated with emotional intelligence (r = 0.24, P < 0.001) and with self-efficacy (r = 0.26, P < 0.001), and self-efficacy was positively correlated with emotional intelligence in college students (r = 0.18, P < 0.001). (3) Self-efficacy played a partial mediating role between physical activity and emotional intelligence in college students (ES = 0.06). Conclusion:Regular physical activity can improve the self-efficacy and emotional intelligence of college students, and effectively promote the physical and mental development of students.