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This study showed that a severe acute respiratory syndrome coronavirus 2 infection reduced the risk of reinfection among vaccinated individuals by 0.50 (95% CI, 0.39–0.64) over a 1-year period, after accounting for unreported infections using avidity-based serology. Reciprocally, chronic symptoms increased from a baseline of 21% (95% CI, 16%–28%) among infection-naïve individuals to 43% (95% CI, 30%–61%) in reinfected individuals. [ABSTRACT FROM AUTHOR]

Detecting severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) reinfections is challenging with current serology assays and is further complicated by the marked decrease in routine viral testing practices as viral transmission increased during Omicron. Here, we provide proof-of-principle that high-avidity anti-nucleocapsid (N) antibodies detects reinfections after a single infection with higher specificity (85%; 95% confidence interval [95% CI], 80%–90%) compared to anti-N antibody levels (72%; 95% CI, 66%–79%) in a vaccinated cohort. This method could be used to retroactively investigate the epidemiology and incremental long-term health consequences of SARS-CoV-2 reinfections. [ABSTRACT FROM AUTHOR]

BackgroundParents are an important influence on children's dietary intake and eating behaviors. However, the lack of a conceptual framework and inconsistent assessment of food parenting practices limits our understanding of which food parenting practices are most influential on children. The aim of this study was to develop a food parenting practice conceptual framework using systematic approaches of literature reviews and expert input.MethodA previously completed systematic review of food parenting practice instruments and a qualitative study of parents informed the development of a food parenting practice item bank consisting of 3632 food parenting practice items. The original item bank was further reduced to 110 key food parenting concepts using binning and winnowing techniques. A panel of 32 experts in parenting and nutrition were invited to sort the food parenting practice concepts into categories that reflected their perceptions of a food parenting practice conceptual framework. Multi-dimensional scaling produced a point map of the sorted concepts and hierarchical cluster analysis identified potential solutions. Subjective modifications were used to identify two potential solutions, with additional feedback from the expert panel requested.ResultsThe experts came from 8 countries and 25 participated in the sorting and 23 provided additional feedback. A parsimonious and a comprehensive concept map were developed based on the clustering of the food parenting practice constructs. The parsimonious concept map contained 7 constructs, while the comprehensive concept map contained 17 constructs and was informed by a previously published content map for food parenting practices. Most of the experts (52%) preferred the comprehensive concept map, while 35% preferred to present both solutions.ConclusionThe comprehensive food parenting practice conceptual map will provide the basis for developing a calibrated Item Response Modeling (IRM) item bank that can be used with computerized adaptive testing. Such an item bank will allow for more consistency in measuring food parenting practices across studies to better assess the impact of food parenting practices on child outcomes and the effect of interventions that target parents as agents of change.

BackgroundParents are an important influence on children's dietary intake and eating behaviors. However, the lack of a conceptual framework and inconsistent assessment of food parenting practices limits our understanding of which food parenting practices are most influential on children. The aim of this study was to develop a food parenting practice conceptual framework using systematic approaches of literature reviews and expert input.MethodA previously completed systematic review of food parenting practice instruments and a qualitative study of parents informed the development of a food parenting practice item bank consisting of 3632 food parenting practice items. The original item bank was further reduced to 110 key food parenting concepts using binning and winnowing techniques. A panel of 32 experts in parenting and nutrition were invited to sort the food parenting practice concepts into categories that reflected their perceptions of a food parenting practice conceptual framework. Multi-dimensional scaling produced a point map of the sorted concepts and hierarchical cluster analysis identified potential solutions. Subjective modifications were used to identify two potential solutions, with additional feedback from the expert panel requested.ResultsThe experts came from 8 countries and 25 participated in the sorting and 23 provided additional feedback. A parsimonious and a comprehensive concept map were developed based on the clustering of the food parenting practice constructs. The parsimonious concept map contained 7 constructs, while the comprehensive concept map contained 17 constructs and was informed by a previously published content map for food parenting practices. Most of the experts (52%) preferred the comprehensive concept map, while 35% preferred to present both solutions.ConclusionThe comprehensive food parenting practice conceptual map will provide the basis for developing a calibrated Item Response Modeling (IRM) item bank that can be used with computerized adaptive testing. Such an item bank will allow for more consistency in measuring food parenting practices across studies to better assess the impact of food parenting practices on child outcomes and the effect of interventions that target parents as agents of change.

PurposeTo explore 10-year longitudinal predictors (personal, psychological, behavioral, and socioenvironmental) of exiting obesity from adolescence to young adulthood.MethodsData were collected from a population-based cohort of adolescents (n = 2,287) attending middle/high schools in Minneapolis-St. Paul in 1998-1999 (mean age = 14.9) and again in 2008-2009 (mean age = 25.3) participating in Project Eating and Activity Among Teens and Young Adults. Self-reported height and weight were used to calculate weight status change between adolescence and young adulthood, among participants with obesity at baseline (n = 175). Questionnaires assessed personal, psychological, behavioral, and socioenvironmental factors hypothesized to play a role in obesity. Modified Poisson regressions estimated adjusted relative risks (RRs) for exiting obesity as a function of each baseline and 10-year change in predictor, controlling for relevant covariates.ResultsThirty-two percent of adolescents exited obesity in young adulthood. Reductions in fast food intake (RR = .73, 95% confidence interval [CI] = .61-.87) and screen time (RR = .98, 95% CI = .96-.99), and increases in fruit/vegetable intake (RR = 1.06, 95% CI 1.01-1.12), moderate-to-vigorous physical activity (RR = 1.06, 95% CI = 1.00-1.12), home fruit/vegetable availability (RR = 1.58, 95% CI = 1.19-2.09), family meals (RR = 1.12, 95% CI = 1.03-1.22), and serving vegetables at dinner (RR = 1.45, 95% CI = 1.10-1.92) were associated with exiting obesity. Not dieting as an adolescent and improvements in body satisfaction, depressive symptoms, self-esteem, and weight teasing were also associated with exiting obesity.ConclusionsPromoting healthy eating and activity, and improving the healthfulness of home food environments may be promising intervention targets for promoting healthier weights in adolescents and young adults with obesity. Addressing dieting behavior and the psychosocial health of adolescents with obesity may also be needed throughout the transition to young adulthood.

Background: Yoga may provide a strategy for healthy weightmanagement in young adults. This study examined prevalence and characteristics of young adults' yoga practice and associations with changes in body mass index. Methods: Surveys were completed by 1830 young adults (31.1 ± 1.6 y) participating in Project EAT-IV. Cross-sectional and 5-year longitudinal analyses were conducted stratified by initial weight status. Results: Two-thirds (66.5%) of nonoverweight women and 48.9% of overweight women reported ever doing yoga, while 27.2% of nonoverweight women and 16.4% of overweight women practiced regularly (≥30 min/wk). Fewer men practiced yoga. Among young adults practicing regularly (n = 294), differences were identified in intensity, type, and location of yoga practice across weight status. Young adults who were overweight and practiced yoga regularly showed a nonsignificant 5-year decrease in their body mass index (-0.60 kg/m²; P = .49), whereas those not practicing regularly had significant increases in their body mass index (+1.37 kg/m²; P < .01). Frequency of yoga was inversely associated with weight gain among both overweight and nonoverweight young adults practicing yoga regularly. Conclusions: Young adults of different body sizes practice yoga. Yoga was associated with less weight gain over time, particularly in overweight young adults. Practicing yoga on a regular basis may help with weight gain prevention. [ABSTRACT FROM AUTHOR]

OBJECTIVE: The workplace represents an important setting for increasing physical activity levels. The purpose of the present study was to investigate the relationship between the workplace environment and leisure-time physical activity, using a nationally representative sample of the Canadian population. METHODS: This study used cross-sectional, self-reported data from 48,916 participants who completed relevant questions on the 2008 Canadian Community Health Survey. Associations between supportive workplace environments for physical activity (e.g., perceived range of amenities available such as a pleasant place to walk, fitness facility, showers, and health program) and leisure-time physical activity level (active, moderately active, inactive) were examined using multinomial logistic regression. RESULTS: Approximately three quarters (n=36,216) of participants had access to at least one amenity that supported physical activity while at work. Females in the lowest age category (18-35 years) who perceived a more supportive workplace environment for physical activity had higher odds of being moderately active (AOR 1.06, 95% CI 1.04-1.08) and active (AOR 1.15, 95% CI 1.13-1.17) as compared to inactive in their leisure time. The strength of this association was slightly higher with age and for males. CONCLUSIONS: Since the majority of Canadian adults do not meet recommended levels of physical activity, the workplace offers a promising and modifiable target for increasing opportunities to be physically active. Employers who can provide a more supportive workplace environment for physical activity would benefit, as it can increase employees' physical activity levels and ultimately improve their productivity and overall health. These benefits may be increased for males and with employees' age. KEY WORDS: Exercise; workplace; environment; public health OBJECTIF : Le lieu de travail est l'un des principaux endroits ou accroitre les niveaux d'activite physique. Nous avons voulu etudier le lien entre l'environnement de travail et l'activite physique pendant les loisirs a l'aide d'un echantillon national representatif de la population canadienne. METHODE : Notre etude fait appel aux donnees transversales autodeclarees de 48 916 personnes ayant repondu aux questions pertinentes de l'Enquete sur la sante dans les collectivites canadiennes de 2008. Nous avons examine par regression logistique multinomiale les associations entre les environnements de travail propices a l'activite physique (le choix percu de commodites disponibles, comme un endroit agreable ou marcher, des installations de conditionnement physique, des douches et un programme de sante) et les niveaux d'activite physique pendant les loisirs (activite, activite moderee, inactivite). RESULTATS : Environ les trois quarts (n=36 216) des repondants avaient acces a au moins une commodite favorisant l'activite physique au travail. Les femmes de la categorie d'age inferieure (18-35 ans) qui jugeaient avoir un environnement de travail plus propice a l'activite physique presentaient une plus forte probabilite d'etre moderement actives (RCa 1,06, IC de 95 % 1,04-1,08) ou actives (RCa 1,15, IC de 95 % 1,13-1,17) plutot qu'inactives dans leurs temps libres. La force de cette association augmentait legerement avec l'age, et elle etait legerement plus elevee chez les hommes. CONCLUSION : Etant donne que la majorite des adultes canadiens sont en-deca des niveaux d'activite physique recommandes, le lieu de travail offre une cible prometteuse et modifiable pour accroitre les occasions d'etre actif. Les employeurs qui peuvent fournir un environnement de travail plus propice a l'activite physique en profiteraient, car cela ferait augmenter les niveaux d'activite physique des employes et, en bout de ligne, ameliorerait leur productivite et leur sante globale. Ces avantages pourraient etre accrus pour les hommes et augmenter avec l'age des employes. MOTS CLES : exercice physique; lieu de travail; environnement; sante publique, Only 15% of Canadian adults meet the recommended level of 150 minutes of moderate-to-vigorous physical activity (PA) per week to achieve health benefits, as measured by accelerometry. (1,2) PA declines [...]

Background: The purpose of this study was to compare the physical activity parenting practices (PAPPs) parents report using with the PAPPs incorporated in the published literature. Methods: PAPPs in the literature were identified by reviewing the content of 74 published PAPP measures obtained from current systematic reviews supplemented with a literature search. The types of PAPPs used by parents were identified by surveying a stratified sample of 134 Canadian and US parents of 5- to 12 year-old children. Items from the literature and parent responses were coded using the same coding scheme. Differences between the PAPPs emphasized by the parents and the literature were examined. Results: Parents significantly emphasized different issues than what is measured in the literature (P < .001). Parents emphasized more control (13.6% vs. 6.9%), modeling and teaching (13.2% vs. 9.2%), and structural strategies (32.2% vs. 28.6%) and less autonomy support (11.8% vs. 14.0%), logistical support (9.9% vs. 12.8%), and responsiveness strategies (19.3% vs. 28.5%). Conclusions: Physical activity practices most often employed by parents are not the ones emphasized in current measures. The extent to which putting more emphasis on the areas identified by parents will increase the predictive validity of the measures warrants further examination. [ABSTRACT FROM AUTHOR]

Background: The purpose of this study was to examine the association between parent and adolescent levels of physical activity, sedentary behaviors, and sleep among a group of overweight and obese adolescents. Methods: Baseline data of parent-adolescent pairs who enrolled in a lifestyle modification intervention were analyzed for this study (n = 176). Participants completed questionnaires about their screen time (TV, video game, and computer time), wore an accelerometer for 8 days, and completed a sleep diary for 1 week. In total, 98 parent-adolescent dyads provided valid data for the analyses. Multivariable regression analyses were conducted to assess the relationship between parent and adolescent's moderate-to-vigorous activity (MVPA), step counts, sedentary behaviors, and sleep duration. Analyses were split by weekday, weekday evening and weekend. Results: Parent-adolescent MVPA was significantly associated on weekdays (b = 0.18; SE = 0.08; β = 0.26), weekday evenings (b = 0.21; SE = 0.08; β = 0.28), and weekends (b = 0.29; SE = 0.12; β = 0.27). This study found associations between parent-child video game time on weekends (b = 1.10; SE = 0.49; β = 0.24) and computer time on weekdays (b = 0.42; SE = 0.19; β = 0.23). Adolescent sleep was associated with parental sleep on weekdays only (b = 0.38; SE = 0.09; β = 0.46). Conclusion: The findings warrant further investigation into the direction and mechanism of the relationship between parent and adolescent weight related behaviors. [ABSTRACT FROM AUTHOR]

High rates of disordered eating exist among adolescents with overweight and among ethnic/racial minority adolescents. Given the lack of research examining how eating disorder risk is moderated by both overweight and ethnicity/race, this study aimed to explore interactions between ethnicity/ race and overweight status on disordered eating behaviors in a population-based adolescent sample. Cross-sectional data from adolescents (n52,271; 52% females) of White (23%), Black (34%), Hispanic (20%), and Asian (23%; 82% Hmong) ethnicity/race participating in the EAT 2010 study were used to examine associations between overweight status and disordered eating behaviors across ethnic/racial groups. Disordered eating behaviors occurred more frequently among adolescents with overweight compared with those without overweight across all ethnic/racial groups. Although some differences in the prevalence of disordered eating were found by ethnicity/race, particularly in girls, no consistent patterns of interaction emerged. Overweight White and Hispanic girls reported the highest risk for dieting, while the highest risk for unhealthy weight control behaviors was among overweight Black girls, and for overeating among overweight White and Asian girls. Within a society in which thinness is highly valued and being overweight is stigmatized, across diverse cultural groups, adolescents with overweight are at risk for disordered eating. [ABSTRACT FROM AUTHOR]