Track 5: Populations and population health

2016 Obesity Reviews  
We aimed to quantify discordance in changes to waist circumference (WC) and weight between 1989 and 2012, and implications for trends in obesity classification for urban Australian adults. Using three nationally representative surveys from 1989, 2000 and 2012, we selected urban Australian adults aged 25 to 69 years with measured height, weight and WC. Linear regression was used to quantify increases in WC over time adjusted for weight, age and smoking status, and stratified by sex. We
more » ... ly quantified age-standardised trends in obesity prevalence classified by WC and/or body mass index (BMI) for each survey, and compared the proportion of individuals captured as obese according to BMI and WC, BMI but not WC, and WC but not BMI. Between 1989 and 2012, WC increased significantly more than would be expected from increases in weight, by 6.7cm (95% CI 6.2, 7.2) and 2.8cm (1.5, 4.1) for women (W) and men (M), respectively. While the proportion of women and men identified as obese between 1989 and 2012 according to BMI but not WC did not substantially change (2% to 1% (W) and 3% to 3% (M)), we observed increases in the proportion identified as obese according to BMI and WC (12% to 24% (W) and 9% to 24%(M)), and the proportion identified as obese according to WC but not BMI (4% to 19% (W) and 5% to 11%(M)). The nature of obesity may be changing for urban Australian adults, and as a result WC may be a more comprehensive indicator of obesity for both Australia and internationally. T5:S29:02 Daytime napping and the risk of metabolic diseases: Dose-response meta-analysis Background: Sleep is an important component of a healthy life. The habit of napping is also widely prevalent around the world. Aims: We performed a meta-analysis to investigate the association between napping and the risk of metabolic diseases, and to quantify the potential dose-response relation. Key Methods: We searched electronic databases for articles published up to 2015. The adjusted relative risk and 95% confidence interval were calculated with the random effect model. Dose-response relations were also evaluated. Results and Conclusions: 307,237 Asian and Western subjects stratified into 21 reports were selected. In each study, analyses were well adjusted for several confounders. Pooled analysis revealed that a longer nap (≥60 min/day) significantly increased the risk of type 2 diabetes comparted with no nap of relative risk 1.45 (1.25-1.69, p=0.03). In contrast, a shorter nap (<60 min/day) did not (p=0.07). A dose-response meta-analysis showed a J-shaped relation between nap time and the risk of diabetes or metabolic syndrome, with no effect of napping up to about 40 minutes/day followed by a sharp increase in the risk at longer times. In contrast, nap time was not associated with an increased risk of obesity (1.13 (0.92-1.39, p=0.25) for a longer nap; 0.95 (0.88-1.02, p=0.15) for a shorter nap). In summary, longer nap was associated with metabolic diseases. Further studies are needed to confrm the efficacy of short nap. Conflict of Interest and Funding Disclosure: None Meal planning has been suggested to improve dietary quality and could be thus a lever to decrease the prevalence of obesity. However to date few studies have evaluated the association between such practice and health status, and in particular weight status. The aim of our cross-sectional study was to investigate the association between meal planning and dietary quality as well as weight status. Meal planning practices were assessed in 51,195 participants of the web-based observational NutriNet-Santé study. Data were weighted according to the national French census. Dietary quality was assessed by using scores estimating food variety and adherence to French nutritional guidelines (mPNNS-GS) respectively. Weight and height were self-reported. Multinomial logistic regression models were used to evaluate the associations between meal planning and quartiles of dietary quality scores as well as with overweight (excluding obesity) and obesity. A total of 52.5% of the participants declared to plan meals. Meal planning was positively associated with food variety (OR quartile 4 vs. 1=1.27, 95%CI: 1.20-1.34) and adherence to nutritional guidelines (1.14 (1.08-1.21)). In women, meal planning was negatively associated with overweight (OR: 0.94 (0.89-0.99)) and obesity (0.78 (0.72-0.84)). In men, the association was significant for obesity only (0.84 (0.73-0.96)). Meal planning was associated with a healthier diet and a lower weight status, suggesting the potential benefits of such practices. ABSTRACTS It is unclear whether a low resting metabolic rate (RMR) may impair weight loss (WL) success. A sample of 964 adults from Wharton Diabetes and Weight Management Clinics were examined. RMR was measured by indirect calorimetry and predicted using the Mifflin St. Jeor equation. Sex stratified analysis was undertaken. The independent associations between baseline RMR and ΔRMR with WL were examined in models controlling 92 Abstracts obesity reviews Background: Obesity trends within different socioeconomic groups have shown mixed results, both in Sweden and other European countries. Aims: To investigate trends in the prevalence of obesity by level of education in the general population in Mid-Sweden from year 2000 to 2012. Key methods: A postal questionnaire was sent to a random population sample aged 25-74 years in years 2000, 2004, 2008 and 2012. The overall response rates were 67%, 65%, 60% and 53%, respectively, and the study included 29017, 27385, 25910 and 24152 respondents, respectively. Obesity (BMI=>30 kg/m2) was based on self-reported weight and height. Results: The age-standardised prevalence of obesity increased from 13% to 17% in women and from 12% to 17% in men between 2000 and 2012. In 2000, there were distinct differences in obesity prevalence between the three levels of education. However, the socioeconomic gradient in obesity changed during the study period since the absolute increase in obesity was largest Abstracts 93 obesity reviews
doi:10.1111/obr.12402 fatcat:6nhfv7zhfrairfjiotod7aclza