Depicting the genetic and metabolic panorama of chemical diversity in the tea plant.

As a frequently consumed beverage worldwide, tea is rich in naturally important bioactive metabolites. Combining genetic, metabolomic and biochemical methodologies, here, we present a comprehensive study to dissect the chemical diversity in tea plant. A total of 2837 metabolites were identified at high-resolution with 1098 of them being structurally annotated and 63 of them were structurally identified. Metabolite-based genome-wide association mapping identified 6199 and 7823 metabolic quantitative trait loci (mQTL) for 971 and 1254 compounds in young leaves (YL) and the third leaves (TL), respectively. The major mQTL (i.e., P < 1.05 × 10-5, and phenotypic variation explained (PVE) > 25%) were further interrogated. Through extensive annotation of the tea metabolome as well as network-based analysis, this study broadens the understanding of tea metabolism and lays a solid foundation for revealing the natural variations in the chemical composition of the tea plant. Interestingly, we found that galloylations, rather than hydroxylations or glycosylations, were the largest class of conversions within the tea metabolome. The prevalence of galloylations in tea is unusual, as hydroxylations and glycosylations are typically the most prominent conversions of plant specialized metabolism. The biosynthetic pathway of flavonoids, which are one of the most featured metabolites in tea plant, was further refined with the identified metabolites. And we demonstrated the further mining and interpretation of our GWAS results by verifying two identified mQTL (including functional candidate genes CsUGTa, CsUGTb, and CsCCoAOMT) and completing the flavonoid biosynthetic pathway of the tea plant.

Relationship among physical exercise, social support and sense of coherence in rural left-behind children.

OBJECTIVE: Sense of coherence has significant implications for the mental health of left-behind children in rural China. This study was conducted to explore the impact of physical exercise and social support on sense of coherence in rural left-behind children. METHODS: A survey was conducted among 964 rural left-behind children in Hunan Province of China aged 10-15 (Mage = 12.01 ± 1.97 years; 529 girls and 435 boys). AMOS 21.0 software was applied to build the model and perform cross-lagged analysis. RESULTS: Physical exercise and social support in left-behind children predict each other, and physical exercise can positively predict social support and sense of coherence in left-behind children two months later (P < 0.05); social support can significantly positively predict sense of coherence in left-behind children two months later (P < 0.05). CONCLUSIONS: Both physical exercise and social support have an impact on sense of coherence in left-behind children, and physical exercise can affect sense of coherence in left-behind children through the mediating effect of social support.

Exercise identity, exercise behavior and mobile phone addiction: A cross-sectional mediation study with a sample of rural left-behind children in China.

To evaluate the relationships among exercise identity, exercise behavior and mobile phone addiction in 516 left-behind children in rural China (48.06% boys; Mage = 12.13 ± 1.95, range 8-16). Specifically, cross-sectional design was carried out to test the hypothesis that the association between rural left-behind children' exercise identity and mobile phone addition would be fully mediated by their exercise behavior. The participants filled in self-reported instruments. The data was analyzed using structural equation modeling and decomposition of direct and indirect effects. Exercise identity and exercise behavior were significantly negatively correlated with left-behind children's mobile phone addiction (r = -0.486, -0.278, P < 0.01), and exercise identity was positively correlated with their exercise behavior (r = 0.229, P < 0.01); the direct effect of exercise identity on mobile phone addiction was -0.226 (95% CI: -0.363 âˆ¼ -0.108), accounting for 68.9% of the total effect of -0.328, and its indirect effect was 0.102 (95% CI: -0.161∼-0.005), accounting for 31.1% of the total effect. These findings suggest that exercise identity may be an effective measure to reduce left-behind children's mobile phone addiction. It is suggested that school administrators and guardians should pay attention to improving left-behind children's exercise identity level in the education process.

Isotopic Fractionation Characteristics of Speciated Mercury from Local Biomass Combustion in the Tibetan Plateau.

As the Third Pole of the world, the Tibetan Plateau (TP) is sensitive to anthropogenic influences. Biomass combustion is one of the most important anthropogenic sources of mercury (Hg) emissions in the TP. However, due to the lack of knowledge about Hg emission characteristics and activity levels in the plateau, atmospheric Hg emissions from biomass combustion in the TP are under large uncertainties. Here, based on pilot-scale experiments, we found that particle-bound mercury (PBM; mean of 83.1-87.7 ng/m3) occupied 17.93-49.31% of the total emitted Hg and the PBM δ202Hg values (average -1.65‰ to -0.77‰) were significantly higher than those of the corresponding feeding biomass. The Δ200Hg values of total gaseous mercury and PBM were more negative (-0.08‰ to -0.05‰) than other anthropogenic emissions, providing unique isotopic fingerprints for this sector. Together with the investigated local activity levels, Hg emissions from biomass combustion reached 402 ± 74 kg/a, which were dozens of times higher than previous estimates. The emissions were characterized by conspicuous spatial heterogeneity, concentrated in the northern and central TP. Specialized Hg emissions and the Hg isotope fingerprint of local biomass combustion can aid in evaluating the influence of this sector on the fragile ecosystems of the TP.

Intervention Effect of Pender's Model on Mental Health of Patients With Diabetes Mellitus: A Meta-analysis.

OBJECTIVE: Our aim in this study was to better understand the intervention effect of Pender's model on the physical and mental health of patients with diabetes mellitus. METHODS: According to the principle of Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines, various databases, including CNKI, Wanfang Data, SinoMed, VIP, Web of Science, Cochrane, PubMed and ScienceDirect, were searched to collect and select relevant reports for the implementation of a meta-analysis. RESULTS: Ten randomized controlled trials in 6 foreign reports and 4 Chinese reports were included in this study. A total of 863 participants were involved, including 439 in the experimental group and 424 in the control group. Results of the meta-analysis show that Pender's model has a good intervention effect on the health knowledge (Z=3.371, p<0.050), self-management behaviour (Z=3.781, p<0.050) and psychological function (Z=2.902, p<0.050) of patients with diabetes mellitus as compared to the control group. The subgroup analysis showed that the intervention effect on self-management behaviour would not be affected by the measurement tool used (Z=3.295, p=0.001). CONCLUSIONS: Pender's model showed a good intervention effect on the health knowledge, self-management behaviour and psychological function of patients with diabetes mellitus.

Pre-anesthetic use of butorphanol for the prevention of emergence agitation in thoracic surgery: A multicenter, randomized controlled trial.

Background: Emergence agitation (EA) is common in patients after general anesthesia (GA) and is associated with poor outcomes. Patients with thoracic surgery have a higher incidence of EA compared with other surgery. This study aimed to investigate the impact of pre-anesthetic butorphanol infusion on the incidence of EA in patients undergoing thoracic surgery with GA. Materials and methods: This prospective randomized controlled trial (RCT) was conducted in 20 tertiary hospitals in China. A total of 668 patients undergoing elective video-assisted thoracoscopic lobectomy/segmentectomy for lung cancer were assessed for eligibility, and 620 patients were enrolled. In total, 296 patients who received butorphanol and 306 control patients were included in the intention-to-treat analysis. Patients in the intervention group received butorphanol 0.02 mg/kg 15 min before induction of anesthesia. Patients in the control group received volume-matched normal saline in the same schedule. The primary outcome was the incidence of EA after 5 min of extubation, and EA was evaluated using the Riker Sedation-Agitation Scale (RSAS). The incidence of EA was determined by the chi-square test, with a significance of P < 0.05. Results: In total, 296 patients who received butorphanol and 306 control patients were included in the intention-to-treat analysis. The incidence of EA 5 min after extubation was lower with butorphanol treatment: 9.8% (29 of 296) vs. 24.5% (75 of 306) in the control group (P = 0.0001). Patients who received butorphanol had a lower incidence of drug-related complications (including injecting propofol pain and coughing with sufentanil): 112 of 296 vs. 199 of 306 in the control group (P = 0.001) and 3 of 296 vs. 35 of 306 in the control group (P = 0.0001). Conclusion: The pre-anesthetic administration of butorphanol reduced the incidence of EA after thoracic surgery under GA. Clinical trial registration: [http://www.chictr.org.cn/showproj.aspx?proj=42684], identifier [ChiCTR1900025705].

Air Pollutant Emissions from Residential Solid Fuel Combustion in the Pan-Third Pole Region.

As the largest emission source in the Pan-Third Pole region, residential solid fuel combustion gains increasing public concern regarding air pollution-associated health impacts. This study firstly developed emission inventories by combining energy statistics, fuel-mix survey, and detailed emission factors considering different fuel types, stove types, and altitudes, and we achieved full regional coverage and increased spatial resolution from 9 × 9 km to 1 km × 1 km. Total CO2, CO, PM2.5, SO2, and NOx emissions (coefficient of variation) were estimated to be 823 Mt (24%), 53 Mt (28%), 4525 kt (48%), 1388 kt (55%), and 1275 kt (46%) in 2020. India, Pakistan, and Bangladesh combined contributed 73, 57, 65, 67, and 69% of total CO2, CO, PM2.5, SO2, and NOx emissions, respectively, due to the large population. The Qinghai-Tibet Plateau had the second-highest emission intensity, mainly due to the high fuel consumption per capita. Unlike the emissions of the Pan-Third Pole in existing Asian inventories, dung cake combustion dominated total PM2.5, SO2, and NOx emissions rather than firewood combustion with proportions of 54, 70, and 67%, respectively. The effect of altitude on combustion efficiencies increased PM2.5 emissions by about 21% from the region. The method and results can provide technical guidance for emission inventory refinement in the Pan-Third Pole and other regions.

The relationship between delay of gratification and work engagement: The mediating role of job satisfaction.

Undoubtedly, teachers remain at the forefront of implementing rural education. This indicates the significant impact their job involvement has on the overall achievements of schools in rural areas. Studies have found that teachers in rural areas often face more difficulties and fewer opportunities in their work. In general, they need a stronger ability to tolerate delay of gratification if they want to have higher job involvement. However, there is currently insufficient research on the impact of career delay of gratification on teachers' job involvement. This study has been conducted to explore the relationship between the delay of gratification and the level of job involvement among physical education (PE) teachers in rural areas, as well as the mediating effect of job satisfaction. 530 PE teachers in the rural areas of Hunan Province, China, have been selected through random sampling as the participants of this study. They have been required to anonymously fill in a Delay of Gratification Scale, Job Involvement Scale and Job Satisfaction Scale to collect the data for investigation and analysis. The study found positive correlations among delay of gratification, job satisfaction, and job involvement among PE teachers in rural areas (P < 0.01), with job satisfaction playing a partial mediating role and intervening variable in the relationship between delay of gratification and job involvement (P < 0.01). Ultimately, delays in gratification directly and, through job satisfaction, indirectly promotes the job involvement of the teachers. The findings of this study reveal the impacts of delaying gratification on the job involvement of PE teachers in rural areas and provide a theoretical basis for increasing the job involvement of PE teachers in rural areas.

Intervention Effect of Group Reminiscence Therapy in Combination with Physical Exercise in Improving Spiritual Well-Being of the Elderly.

BACKGROUND: To explore the intervention degree and improvement effect of group reminiscence therapy in combination with physical exercise on spiritual well-being of the elderly after the outbreak of the COVID-19 epidemic. METHODOLOGY: In 2020, overall, 130 elderly people were selected from communities in Xiangtan City and Changsha City of Hunan Province, China and randomly divided into two groups, with 65 people in each group. One group was the experimental group that participated in the exercise intervention for 8 weeks as the objects of group reminiscence therapy intervention in combination with physical exercise. The other group was the control group that listened to 4 routine health lectures. Spirituality Index of Well-Being, ULS Loneliness Scale and Brief Resilience Scale were used to evaluate the effect of the intervention. RESULTS: Before the intervention, there was no significant difference between the experimental group and the control group, but after 8 weeks of exercise intervention, the score of loneliness was lower in the experimental group than in the control group (P<0.05), the scores of spiritual well-being and resilience were significantly higher in the experimental group than in the control group (P<0.05); and the differences before and after the intervention were significantly higher in the experimental group than the control group (P<0.05). CONCLUSION: Group reminiscence therapy in combination with physical exercise could improve spiritual well-being and mental health of the elderly.

Social Anxiety Status of Left-Behind Children in Rural Areas of Hunan Province and its Relationship with Loneliness.

OBJECTIVE: This study was designed to investigate the situation of social anxiety among left-behind children in rural areas of Hunan Province, China, and to study the effect of social anxiety on loneliness. METHODOLOGY: A total of 797 left-behind children were selected from rural areas in Hunan Province, China. The basic information questionnaire for left-behind children, Social Anxiety Scale for Children, Perceived Social Support Scale and UCLA Loneliness Scale were used for investigation. RESULTS: (1) The social anxiety score of left-behind children in China is 6.84 ± 4.28, higher than non-left-behind children, and the score of boys is lower than that of girls, with no significant difference. The score of left-behind children in grade 5 is significantly lower than that of left-behind children in other grades. (2) The overall loneliness score is 16.30 ± 5.10, higher than non-left-behind children, and the score of boys is significantly higher than that of girls. (3) Social anxiety has a significant positive predictive effect on loneliness (P < 0.01). Regression analysis shows that social anxiety not only affects loneliness directly, but also affects loneliness indirectly through the mediating role of perceived social support. CONCLUSIONS: Social anxiety is a risk factor for loneliness of left-behind children in rural areas. In the influence of social anxiety on loneliness, social support plays a partial mediating role.

Influence of physical exercise on social anxiety of left-behind children in rural areas in China: The mediator and moderator role of perceived social support.

OBJECTIVE: to explore the influence of physical exercise on social anxiety of left-behind children in rural areas, and to verify the mediator and moderator role of perceived social support. METHODS: 797 rural left-behind children were studied with physical exercise rating scale, social anxiety scale and perceived social support assessment scale. The Pearson correlation coefficient was calculated between physical exercise and social anxiety, and regression and structural equation models were used to check whether perceived social support played a mediator and moderator role or not. RESULTS: the effect of physical exercise on social anxiety of left-behind children in rural areas is significant (P < 0.01); exercise time, exercise intensity and exercise frequency have significant effects on social anxiety; perceived social support has significant effects on social anxiety (P < 0.01); family support, friend support and other support have significant negative effects on social anxiety. Regression analysis shows that the dimensions of perceived social support (family support, friend support and other support) have some mediator effects in explaining social anxiety in sports. Perceived social support plays a moderator role in the relationship between physical exercise and social anxiety. CONCLUSIONS: The results suggests the impact of perceived social support on left-behind children in rural areas. Specifically, perceived social support has a positive impact on the level of social anxiety and a positive impact on physical exercise. It is suggested that attention should be paid to social support of rural left-behind children in the process of mental health education and school physical education.

Social anxiety and the relationship between social support and hope of left-behind children in rural area / 中国学校卫生

Objective@#This study aims at discussing the relationship between social anxiety and level of hope among left-behind children,the mediator role of perceived social support, and to provide objective reference for mental health education and positive psychological quality improvement.@*Methods@#From September to October 2018,Social Anxiety Scale for Children,Hope Scale and Perceived Social Support Scale were administered among 797 rural left-behind children in Hunan Province of China. Pearson correlation coefficients were used to determine the relationship between variables. Regression analysis and structural equation modeling were used to assess whether perceived social support played a mediator role in social anxiety and hope of rural left-behind children.@*Results@#Social anxiety (6.84±4.28) was negatively correlated with perceived social support (54.18±14.48) and hope (23.80±5.77) (r=-0.23, -0.19, P<0.01). Perceived social support was positively correlated with hope (r=0.49, P<0.01). Perceived social support played a mediator role in the relationship between social anxiety and rural left-behind children’s level of hope.@*Conclusion@#This study has indicated the positive influence of perceived social support on the level of hope and buffering role on the adverse impact of social anxiety. More activities to improve social support for rural left-behind children need to be carried out during the process of education and mental health.

Correlation Between Perceived Social Support and Loneliness Among Chinese Adolescents: Mediating Effects of Psychological Capital.

BACKGROUND: Adolescence is a period characterized by high frequency of mental health problems. Loneliness, in particular, is a common psychological problem. This study aims to explore the effects of psychological capital on adolescents' loneliness and the mediating effects of perceived social support. SUBJECTS AND METHODS: A total of 694 adolescents from six regions in Hunan Province, China were selected. The survey was conducted using the Perceived Social Support Scale, Loneliness Scale, and Psychological Capital Questionnaire. The study analyzed the correlations between perceived social support, psychological capital, and loneliness among adolescents and the mediating role of psychological capital in the relationship between perceived social support and loneliness. RESULTS: Significant correlations were observed between adolescents' total scores in perceived social support, psychological capital, and loneliness and between each dimension. The following observations were made: a significant negative correlation between perceived social support and loneliness (r=0.440, P<0.01), a significant positive correlation between perceived social support and psychological capital (r=0.493, P<0.01), and a significant negative correlation between psychological capital and loneliness (r=-0.303, P<0.01). Psychological capital plays a statistically significant mediating role on the relationship between perceived social support and loneliness (P<0.01). CONCLUSIONS: Perceived social support and psychological capital can reduce adolescents' loneliness and perceived social support can alleviate loneliness by enhancing psychological capital.

Behavior of Sulfur Oxides in Nonferrous Metal Smelters and Implications on Future Control and Emission Estimation.

This study jointly conducted a field investigation and thermodynamic model simulation in three nonferrous metal smelters (NFMS) to identify sulfur oxides (SOX) formation, transformation, and emissions in the flue gas. Most of SOX was released as sulfur dioxides (SO2) at the outlet of the furnace with the molar proportion of sulfur trioxides (SO3) of 1.0-4.1%. The formation of SO3 in smelters depended on temperature, material composition, and flue gas components. These factors were relatively certain once the production was designed. During the use of air pollution control devices (APCDs), SO3 removal alternated with its formation in the APCDs of the smelting/roasting step. Deep clean measures could not ensure standard emissions of SO3 in all smelters. Under the strict production and emission requirements, we recommended the combined effort of production design, parameter optimization, and deep clean measures to control SO3 pollution. In addition, recognizing the underestimation of the national inventory (10% at the most) due to the lack of emissions from NFMS, we suggested the attention on SOX emissions from sectors using high-sulfur raw materials in the pyroprocess. Besides, the higher potential of SO3 on secondary particle formation highlighted the distinction of SO3 and SO2 emissions in inventories for better evaluation of their environmental impact.

Intervention Effects of Motivation Interviewing Chinese Modified on the Mental Health of College Students with Exercise Dependence.

Exercise dependence is a psychological problem that cannot be ignored and is positively related to anxiety and depression of college students. However, only a few effective intervention methods are available to deal with exercise dependence. This study aims to investigate the intervention effects of motivation interviewing Chinese modified on the mental health of college students with exercise dependence. Thirty college students with exercise dependence were selected from Hunan University of Science and Technology in Hunan province of China to participate in the experiment. The participants were divided equally into the intervention and control groups. A three-week motivation interviewing Chinese modified session was conducted in the intervention group, whereas no intervention was carried out in the control group. This strategy allowed for the vertical and the horizontal comparison of the intervention objects' situation before and after the experiment. The State-Trait Anxiety Inventory and other Scales were used to evaluate the effects of the intervention and explore the intervention effects of motivation interviewing Chinese modified on the mental health of college students with exercise dependence. After three weeks of motivation interviewing Chinese modified, differences in state anxiety, depression, self-satisfaction, negative emotion, energy, and positive emotion in the intervention and control groups before and after the intervention appear to be statistically significant (P < 0.05). Motivation interviewing Chinese modified can improve the mental health level of college students with exercise dependence. Hence, motivation interviewing Chinese modified is good for the treatment of addiction behaviors and provides a reliable intervention method for exercise dependence.

Physical activities status of left-behind children in rural areas and its relationship with psychological capital / 中国学校卫生

Objective@#To investigate the present situation of physical activities and psychological capital of left-behind children in rural areas, and analyze the relationship between them, so as to further explore the ways to promote the psychological capital of left-behind children in rural areas.@*Methods@#A total of 1 606 students of grade 3 to 9 were selected through random cluster sampling, and Physical Activity Rating Scale and the Mental Capital Scale was adminstered to Left-behind Children in Rural Areas 797 left-behind children in rural areas was analyzed.@*Results@#The average score of the amount of physical activity of left-behind children in rural areas was 13.70±18.58 points, and the proportion of the small, medium and large amount of physical activity was 75.3%, 16.3% and 8.4% , respectively. There were significant differences in activity intensity, duration, total score of physical activity, and exercise level among left-behind children in rural areas of different genders(t=3.47,2.16,4.09,4.03,P<0.05). There was no significant difference in physical activity among left-behind children in rural areas of different grades, ages and schooling modes(P>0.05). The amount of physical activity was positively correlated with the total score of psychological capital and the five dimensions(P<0.01). Regression analysis showed that the amount of exercise had a positive predictive impact on the psychological capital and five dimensions(P<0.01).@*Conclusion@#The scores of physical activity of left-behind children in rural areas were low, and their psychological capital was above the average level. Physical activity had a significant positive impact on their psychological capital, which was an effective way to promote their psychological capital.

Social Anxiety and Internet Addiction among Rural Left-behind Children: The Mediating Effect of Loneliness.

BACKGROUND: At present, the mental health of rural left-behind children is a major social problem in China. Internet addiction, social anxiety, and loneliness are common psychological and behavioral problems among rural left-behind children, but the relationships among these issues have not been clearly identified. METHODS: A total of 432 junior year 1 to senior year 3 students were randomly selected from 2 rural middle schools in Hunan Province of China as the research subjects. The Internet Addiction Disorder Diagnostic Scale, Social Anxiety Subscale of the Self-Consciousness Scale (SASS-CS), and University of California Los Angeles Loneliness Scale were employed to measure the degree of Internet addiction, feelings of social fear, social avoidance behavior, and the level of loneliness among the research subjects. RESULTS: The rate of Internet addiction among rural left-behind middle school students was 18.27%, and was correlated with the length of time their parents spent at home as well as whether one or both parents migrated for work. Positive correlations were found among Internet addiction, social anxiety, and loneliness. Loneliness was found to play a mediating role in the relationship between social anxiety and Internet addiction among rural left-behind middle school students. CONCLUSION: Social anxiety and loneliness both increase the likelihood of Internet addiction in rural left-behind middle school students and social anxiety can affect Internet addiction through loneliness, implying an urgent need to strengthen care for rural left-behind children, reduce their loneliness, and thereby effectively alleviate the problem of Internet addiction among rural left-behind middle school students.

Mediator Effects of Positive Emotions on Social Support and Depression among Adolescents Suffering from Mobile Phone Addiction.

BACKGROUND: Depression is a common mental disorder that is widely seen among adolescents suffering from mobile phone addiction. While it is well known that both positive emtions in adolescents wiotions and social support can have a positive impact by helping individuals to maintain a positive attitude, the correlation between positive emotions, social support, and depression among these adolescents remains to be investigated. This study examined the mediator effects of positive emotions on the relationship between social support and depression among adolescents suffering from mobile phone addiction. SUBJECTS AND METHODS: For this study, conducted in 2016, we selected 1,346 adolescent students from three middle schools (ranging from Junior Grade One to Senior Grade Three) in Hunan Province of China, to participate in the survey. Participants were selected using the stratified cluster random sampling method, and all participants remained anonymous throughout the study. Each participant completed the Self-made General Situation Questionnaire, the Social Support Rating Scale, the Positive and Negative Affect Schedule, the Center for Epidemiological Studies Depression Scale, and the Mobile Phone Addiction Tendency Scale. RESULTS: There was significant positive correlation between positive emotions and social support. Both positive emotions and social support demonstrated significant negative correlation with depression. Positive emotions had partial mediator effects on the relationship between social support and depression (P<0.01). CONCLUSIONS: Both social support and positive emotions can lower levels of depression among adolescents suffering from mobile phone addiction. Social support contributes to positive emoth mobile phone addiction, thereby reducing their levels of depression. These findings suggest that more support and care should be given to this particular adolescent population.

Effects of exercise dependence on psychological health of Chinese college students.

BACKGROUND: The aim of this study was to investigate the effects of exercise dependence on the psychological health of Chinese college students. SUBJECTS AND METHODS: A total of 1601 college students from three universities in Hunan, China, were selected as research subjects. Several measurement scales, including the Exercise Addiction Inventory, the State-Trait Anxiety Inventory, the Center for Epidemiologic Studies Depression Scale, and the Subjective Well-being Scale, were used to survey the psychological health problem of these students and to analyze the effects of exercise dependence on their psychological health. RESULTS: Exercise dependence, based on the structural equation model analysis, can positively influence state anxiety (P<0.05), depression (P<0.05), and subjective well-being (P<0.05) of Chinese students. By contrast, exercise dependence negatively influences students' self-satisfaction (P<0.05), social behavior (P<0.05), and vigor (P<0.05). CONCLUSIONS: Exercise dependence adversely affects the psychological health of college students. Further research using multi-dimensional exercise addiction scales should be conducted to identify all the negative effects of exercise addiction factors on psychological health.

[Criterion-related validity of the Menopause-Specific Quality of Life Questionnaire-Chinese version].

OBJECTIVE: To investigate the criterion-related validity of Menopause-Specific Quality of Life Questionnaire (MENQOL)-Chinese version and to evaluate the effect of menopausal symptoms on health related quality of life. METHODS: This study was a cross-sectional survey. Three communities were randomly chosen in Changsha, and then 340 menopausal women aged 45-55 years were randomly chosen from the documented data of the 3 community health service centers. They were required to fill out 4 questionnaires: demographic questionnaire, MENQOL-Chinese version, Kupperman Index (KI) and World Health Organization Quality of Life (WHQOL)-BREF. Correlation analysis was used to measure the criterion-related validity. RESULTS: MENQOL-Chinese version subscales (vasomotor, psycho-social, sexual and physical) and KI total score were positively correlated (r=0.800, 0.751, 0.607, 0.906 respectively); while negatively correlated with WHOQOL-BREF total score (r =-0.694, -0.851, -0.585, -0.873 respectively); MENQOL-Chinese version subscales (vasomotor, psycho-social, sexual and physical) were significantly correlated with WHOQOL-BREF subscales (physical, psychological, social relationship, environment), and the physical domain was the highest among the correlation coefficients (r=-0.915). CONCLUSION: MENQOL-Chinese version shows relatively high criterion-related validity compared with KI and WHOQOL-BREF, which can be widely used to measure the quality of life of menopause women in China.