2019 Vol. 32, No. 9

2019, 32(9): 1-1.
2019, 32(9): 2-2.
Original Article
The Mediating Effect of Body Dissatisfaction in Association between Obesity and Dietary Behavior Changes for Weight Loss in Chinese Children
GAO Huai Quan, WANG Bang Xuan, SUN Li Li, LI Ting, WU Lu, FU Lian Guo, MA Jun
2019, 32(9): 639-646. doi: 10.3967/bes2019.083
Objective The aim of this study was to analyze the mediating effect of body dissatisfaction in correlation between obesity and dietary behavior changes for weight loss (DBCWL). Methods A total of 680 primary and middle school students were included in this study. Their body height, weight, and waistline were effectively measured, and they were also evaluated to assess their body dissatisfaction, perception of dietary behaviors, and DBCWL. The correlation among these factors was analyzed using mediating effect models. Results The prevalence of overweight/obesity and abdominal obesity was significantly higher in males than in females (P < 0.05). Overweight/obesity, abdominal obesity, and body dissatisfaction significantly increased the risk for DBCWL (OR = 2.57, 2.77, and 1.95, respectively). Overweight/obesity and abdominal obesity significantly increased the risk for body dissatisfaction (OR = 6.00 and 4.70, respectively). Significant mediating effects of body dissatisfaction were observed in correlation between overweight/obesity and DBCWL and between abdominal obesity and DBCWL (OR = 2.20 and 1.92, respectively; P < 0.05), and the proportions of mediating effects among the total effects were 48.89% and 46.60%, respectively. Conclusion Body dissatisfaction might play an important mediating effect in association between DBCWL and obesity, which indicates that guiding children to correctly recognize their body might be more conducive than promoting obese children toward weight loss through dietary behavior changes.
Validity and Reliability of Chinese Physical Activity Questionnaire for Children Aged 10-17 Years
YANG Xi, JAGO Russell, ZHAI Yi, YANG Zhen Yu, WANG Yu Ying, SI Xiang, WANG Jun, GAO Jian Fen, CHEN Jing Ron, YU Ying Jie, ZHAO Wen Hua
2019, 32(9): 647-658. doi: 10.3967/bes2019.084
Objective This study is aimed to report the development, the reliability and validity of the Chinese Children Physical Activity Questionnaire (CCPAQ) which was designed for the assessment of physical activity pattern in young population in China. Methods The CCPAQ was administered for two times in 119 children (mean age 13.1 ± 2.4 years; boys 47%) to examine reliability by using intraclass correlation coefficients. Validity was determined in 106 participants by agreement with the CCPAQ measures and the objective method, the ActiGraph accelerometer. Data on physical activity pattern including time spent on different intensities and total physical activity, sedentary behavior as well as physical activity energy expenditure were used to assess the validity with Spearman’s correlation coefficient and the Bland-Altman plots. Results The reliability coefficient of the CCPAQ ranged from 0.63-0.93 (Intra-class correlation coefficient). Spearman’s correlation coefficient for validity of time spent on total physical activity and sedentary behavior were all 0.32 (P < 0.001), and for physical activity energy expenditure was 0.58 (P < 0.001). Time spent on moderate-to-vigorous physical activity and light physical activity showed a relatively low correlation with the accelerometer (rho = 0.20, P = 0.040; rho = 0.19, P = 0.054). Conclusion The CCPAQ appears to be a promising and feasible method to assess physical activity pattern in Chinese children.
Metabolomic Profiling Differences among Asthma, COPD, and Healthy Subjects: A LC-MS-based Metabolomic Analysis
LIANG Ying, GAI Xiao Yan, CHANG Chun, ZHANG Xu, WANG Juan, LI Ting Ting
2019, 32(9): 659-672. doi: 10.3967/bes2019.085