Exploring associations between parental and peer variables, personal variables and physical activity among adolescents: a mediation analysis

This study aimed to investigate how parental and peer variables are associated with moderate- to-vigorous intensity physical activity (MVPA) on week- and weekend days among Australian adolescents (13-15 y), and whether perceived internal barriers (e.g. lack of time), external barriers (e.g. lack of others to be physically active with) and self-efficacy mediated these associations.

Associations of parental rules and socioeconomic position with preschool children's sedentary behaviour and screen time

There is little current understanding of the influences on sedentary behaviour and screen time in preschool children. This study investigated socioeconomic position (SEP) and parental rules as potential correlates of preschool children's sedentary behaviour and screen time.

Paraoxonase (PON)1 Q192R functional genotypes and PON1 Q192R genotype by smoking interactions are risk factors for the metabolic syndrome, but not overweight or obesity

Background The metabolic syndrome (MetS) is a complex of multiple risk factors that contribute to the onset of cardiovascular disorder, including lowered levels of high-density lipoprotein (HDL) and abdominal obesity. Smoking, mood disorders, and oxidative stress are associated with the MetS. Paraoxonase (PON)1 is an antioxidant bound to HDL, that is under genetic control by functional polymorphisms in the PON1 Q192R coding sequence. Aims and methods This study aimed to delineate the associations of the MetS with plasma PON1 activity, PON1 Q192R genotypes, smoking, and mood disorders (major depression and bipolar disorder), while adjusting for HDL cholesterol, body mass index, age, gender, and sociodemographic data. We measured plasma PON1 activity and serum HDL cholesterol and determined PON1 Q192R genotypes through functional analysis in 335 subjects, consisting of 97 with and 238 without MetS. The severity of nicotine dependence was measured using the Fagerström Nicotine Dependence Scale. Results PON1 Q192R functional genotypes and PON1 Q192R genotypes by smoking interactions were associated with the MetS. The QQ and QR genotypes were protective against MetS while smoking increased metabolic risk in QQ carriers only. There were no significant associations between PON1 Q192R genotypes and smoking by genotype interactions and obesity or overweight, while body mass index significantly increased MetS risk. Smoking and especially severe nicotine dependence are significantly associated with the MetS although these effects were no longer significant after considering the effects of the smoking by PON1 Q192R genotype interaction. The MetS was not associated with mood disorders, major depression or bipolar disorder. Discussion PON1 Q192R genotypes and genotypes by smoking interactions are risk factors for the MetS that together with lowered HDL and increased body mass and age contribute to the MetS.

Parental influences on the diets of 2- to 5-year-old children: systematic review of qualitative research

Parents have a major influence on young children's diets, food choices and habit formation. However, research concerning parental influence on children's diets is limited. Qualitative research informs quantitative research with a narrative of 'what works' and is a valuable tool to inform intervention design and practice. This article presents a systematic review of qualitative research with parents of preschool children and their influence on their child's diet. Nine studies were identified. Findings highlight the need to promote culturally tailored programmes to combat specific cultural differences such as attitudes; perceptions and concerns; address common barriers to providing healthy foods and challenges faced by lower income families; the use of food to shape a child's behaviour; that children will grow out of excess weight; common misconceptions such as a heavier child is healthier and depriving a child's food request could result in starvation. Research on parental understanding of healthy diets and feeding practices is lacking. Further insights into how to positively influence children's diets will come from research examining parent feeding practices and nutrition knowledge. © The Author(s) 2013.

Obesity prevention interventions in early childhood education and care settings with parental involvement: a systematic review

Partnering early childhood education and care (ECEC) and the home together may be more effective in combating obesogenic risk factors in preschool children. Thus, an evaluation of ECEC obesity prevention interventions with a parental component was conducted, exploring parental engagement and its effect on obesity and healthy lifestyle outcomes. A search revealed 15 peer-reviewed papers. Some studies demonstrated positive weight changes, and secondary outcomes of changes in physical activity and healthy eating were reported in most studies; study quality ranged from fair to good. Four findings were linked to weight changes: (1) when educational material is consistent across settings; (2) capacity building of parents; (3) parents encouraging their children to drink water and (4) parental satisfaction and participation. A partnership between parents and ECEC may be a powerful force in the prevention of paediatric obesity. A better understanding of collaborative parental engagement is needed.

Factors associated with parental rules for adolescent alcohol use

This study used the Resilient Families baseline survey to examine associations between the connectedness of parents within the school and parents' rules regarding their children's use of alcohol, prior participation in parenting education, and parents' demographic characteristics. The study involved parents of Year 7 students (mean age 12 years) at secondary schools in Melbourne, Australia (N = 1,238; 2004). Most parents (54%) had no connections with parents of other children in their child's school year. Allowing children to have sips of alcohol or drinks on special occasions was reported by 23% and 6% of parents, respectively, but neither was significantly associated with parental connectedness. Copyright © 2014 Informa Healthcare USA, Inc.

Does parental accompaniment when walking or cycling moderate the association between physical neighbourhood environment and active transport among 10-12 year olds?

To assess whether associations between neighbourhood environmental features and frequency of children's active trips per week are moderated by frequency of parental accompaniment when walking/cycling.

What is the role of tobacco control advertising intensity and duration in reducing adolescent smoking prevalence? Findings from 16 years of tobacco control mass media advertising in Australia

ABSTRACT
Objective: To examine how the intensity and duration of tobacco control advertising relate to adolescent smoking prevalence.
Methods: Australian students (aged 12–17 years) participating in a national survey conducted triennially between 1993 and 2008 (sample size range 12 314–16 611). The outcome measure was students’ smoking in the previous 4 weeks collected through anonymous, self-completed surveys. For each student, monthly targeted rating points (TRPs, a measure of television advertising exposure) for tobacco control advertising was calculated for the 3 and 12 months prior to surveying. For each time period, cumulative TRPs exposure and exposure to three intensity levels (≥100 TRPs/month; ≥400 TRPs/month; ≥800 TRPs/month) over increasing durations (eg, 1 month, 2 months, etc) were calculated. Logistic regression examined associations between TRPs and adolescent smoking after controlling for demographic and policy variables.
Results: Past 3-month cumulative TRPs were found to have an inverse relationship with smoking prevalence. Low TRPs exposure in the past 12 months was positively associated with adolescent smoking prevalence. However, smoking prevalence reduced with cumulative exposure levels above 5800 cumulative TRPs. Additionally, exposure to ≥400 TRPs/month and ≥800 TRPs/month were associated with reduced likelihood of smoking, although the duration needed for this effect differed for the two intensity levels. When intensity was ≥400 TRPs/month, the odds of smoking only reduced with continuous exposure. When intensity was ≥800 TRPs/month, exposure at levels less than monthly was associated with reductions in smoking prevalence.
Conclusions: Both antismoking advertising intensity and duration are important for ensuring reductions in adolescent smoking prevalence.

Time series analysis of the impact of tobacco control policies on smoking prevalence among Australian adults, 2001–2011

Objective: To determine the impact of tobacco control policies and mass media campaigns on smoking prevalence in Australian adults.
Methods: Data for calculating the average monthly prevalence of smoking between January 2001 and June 2011 were obtained via structured interviews of randomly sampled adults aged 18 years or older from Australia’s five largest capital cities (monthly mean number of adults interviewed: 2375). The influence on smoking prevalence was estimated for increased tobacco taxes; strengthened smoke-free laws; increased monthly population exposure to televised tobacco control mass media campaigns and pharmaceutical company advertising for nicotine replacement therapy (NRT), using gross ratings points; monthly sales of NRT, bupropion and varenicline; and introduction of graphic health warnings on cigarette packs. Autoregressive integrated moving average (ARIMA) models were used to examine the influence of these interventions on smoking prevalence.
Findings: The mean smoking prevalence for the study period was 19.9% (standard deviation: 2.0%), with a drop from 23.6% (in January 2001) to 17.3% (in June 2011). The best-fitting model showed that stronger smoke-free laws, tobacco price increases and greater exposure to mass media campaigns independently explained 76% of the decrease in smoking prevalence from February 2002 to June 2011.
Conclusion: Increased tobacco taxation, more comprehensive smoke-free laws and increased investment in mass media campaigns played a substantial role in reducing smoking prevalence among Australian adults between 2001 and 2011.

Parental practices encouraging and discouraging physical activity in Hong Kong Chinese preschoolers

Background: Regular participation in physical activity (PA) can help reduce the risk of overweight/obesity. Parental practices related to PA are modifiable determinants of preschoolers' PA that are still not well understood, especially in non-Western cultures. This qualitative explorative study aimed to identify parental practices encouraging or discouraging PA in Hong Kong preschoolers. Methods: Nominal Group Technique (NGT) sessions (n = 45; 6 to 9/group), complemented by a focus group (n = 6) and individual interviews (n = 12), were conducted with primary caregivers (mainly parents) of Hong Kong preschoolers to investigate what parents do to encourage (4 groups) and discourage (2 groups) PA in children. The groups were stratified by low and high neighborhood socioeconomic status. Results: Participants generated 21 and 16 items describing practices encouraging and discouraging preschoolers' PA, respectively. Parental provision of instrumental, motivational, and conditional support were thought to encourage child's PA, while parental safety concerns, focus on academic achievement, lack of time and resources, and promotion of sedentary behaviors were thought to discourage child's PA. Conclusions: Several parental practices that were deemed to encourage or discourage Hong Kong preschoolers' PA were identified. These can assist with development of a culturally sensitive scale of PA parenting practices and inform future quantitative research.

The impact of maternal smoking during pregnancy on depressive and anxiety behaviors in children: the Norwegian Mother and Child Cohort Study.

BACKGROUND: Maternal smoking during pregnancy (MSDP) is associated with multiple adverse childhood outcomes including externalizing behaviors. However, the association between MSDP and internalizing (anxiety and depressive) behaviors in offspring has received less investigation. We aimed to assess the association between MSDP and childhood internalizing (anxiety and depressive) behaviors in a very large, well-characterized cohort study. METHODS: We assessed the association between MSDP and internalizing behaviors in offspring utilizing information drawn from 90,040 mother-child pairs enrolled in the Norwegian Mother and Child Cohort Study. Mothers reported smoking information, including status and frequency of smoking, twice during pregnancy. Mothers also reported their child's internalizing behaviors at 18 months, 36 months, and 5 years. Associations between MSDP and childhood internalizing behaviors, including dose-response and timing of smoking in pregnancy, were assessed at each time point. RESULTS: MSDP was associated with increased internalizing behaviors when offspring were aged 18 months (B = 0.11, P <0.001) and 36 months (B = 0.06, P <0.01), adjusting for numerous potential confounders. Higher rates of smoking (e.g., >20 cigarettes per day) were associated with higher levels of internalizing behaviors. Maternal smoking during early pregnancy appeared to be the critical period for exposure. CONCLUSIONS: We found evidence supporting a potential role for MSDP in increasing internalizing (anxiety and depressive) behaviors in offspring. We also found evidence supportive of a possible causal relationship, including dose-dependency and support for a predominant role of early pregnancy exposure. Further investigation utilizing genetically informed designs are warranted to assess this association.

Regional versus urban differences in teenage alcohol use: Does parental disapproval account for these differences?

Objective: To investigate if parental disapproval of alcohol use accounts for differences in adolescent alcohol use across regional and urban communities. Design: Secondary data analysis of grade-level stratified data from a random sample of schools. Setting: High schools in Victoria, Australia. Participants: A random sample of 10273 adolescents from Grade 7 (mean age=12.51 years), 9 (14.46 years) and 11 (16.42 years). Main outcome measures: The key independent variables were parental disapproval of adolescent alcohol use and regionality (regional/ urban), and the dependent variable was past 30 days alcohol use. Results: After adjusting for potential confounders, adolescents in regional areas were more likely to use alcohol in the past 30 days (OR=1.83, 1.44 and 1.37 for Grades 7, 9 and 11, respectively, P<0.05), and their parents have a lower level of disapproval of their alcohol use (b=-0.12, -0.15 and -0.19 for Grades 7, 9 and 11, respectively, P<0.001). Bootstrapping analyses suggested that 8.37%, 23.30% and 39.22% of the effect of regionality on adolescent alcohol use was mediated by parental disapproval of alcohol use for Grades 7, 9 and 11 participants respectively (P<0.05). Conclusions: Adolescents in urban areas had a lower risk of alcohol use compared with their regional counterparts, and differences in parental disapproval of alcohol use contributed to this difference.