[Prevention of overweight and obesity in children and adolescents : Critical appraisal of the evidence base]

BACKGROUND

Despite careful planning and implementation, overweight/obesity prevention interventions in children and adolescents typically show no, inconsistent or merely weak effects. Such programs usually aim at behavior changes, rarely also at environmental changes, that draw upon conventional wisdom regarding the commonly accepted determinants of childhood overweight/obesity.

OBJECTIVE

This paper evaluates the evidence base of the apparently overweight-/obesity-related determinants diet, physical activity and stress. The results of international intervention studies are discussed against this background.

METHODS AND MATERIALS

Based on the mediating-moderating variable model, we investigate the effect of theory specified mediating variables and how potential moderating variables may impact these relationships.

RESULTS

Contrary to common beliefs, recent research has revealed inconsistent evidence regarding associations between potentially obesogenic behaviors and overweight/obesity in youth. Moreover, the evidence for strong and causal relationships between mediating variables and targeted behaviors seems to be inconsistent. In addition, inadequate attention is paid to moderating effects.

DISCUSSION

The etiology of overweight/obesity in youth is likely the result of a complex interplay of multi-causal influences. Future prevention interventions would benefit from a more thorough understanding of the complex relationships that have been hypothesized and of the mechanisms of suspected behaviors for affecting overweight/obesity. Only if substantial change can be demonstrated in mediators with reasonable effort under real world circumstances, it will make sense to progress to community behavior change trials.

Childhood maltreatment and depressive symptoms among Chinese college students: A moderated mediation model of adult attachment styles and physical activity

BACKGROUND

Previous research has investigated the independent effects of childhood maltreatment, adult attachment, and physical activity, on depressive symptoms. However, explanatory mechanisms linking childhood maltreatment to current depressive symptoms are poorly understood. This study investigated the mediating role of adult attachment between childhood maltreatment and depressive symptoms among college students and explored the moderating effect of physical activity in the mediating pathway.

METHODS

The data for the present study were gathered in three waves with 6-month lags. A total of 3662 Chinese college students completed anonymous questionnaires concerning demographic variables, childhood maltreatment, and depressive symptoms in Wave 1, adult attachment and physical activity in Wave 2, and depressive symptoms in Wave 3.

RESULTS

Childhood maltreatment and adult attachment were significantly associated with depressive symptoms, identifying a mediating role of adult attachment in the relationship between childhood maltreatment and depressive symptoms, and a moderating role of physical activity between attachment anxiety and depressive symptoms in the mediating pathway.

LIMITATIONS

This study utilized self-reported questionnaires for data collection purposes, which could constitute key study limitations.

CONCLUSIONS

These findings highlight the need to consider early stress factors (childhood maltreatment), social psychological factors (adult attachment), and potential protective factors (physical activity) simultaneously when evaluating the occurrence and development of depressive symptoms.

The correlation between mindfulness and problematic smartphone use: A meta-analysis

OBJECTIVES

In the modern era of constant digital technological advancements, problematic smartphone use has become a key issue in educational psychology. This phenomenon affects individual psychological well-being and academic or other performance and encompasses interpersonal relationships and societal aspects, divulging the intricate correlation between technology usage and human behavior. This study aims to explore mindfulness as an intervention measure to lessen problematic smartphone use.

METHODS

Based on the PRISMA method, this study used a meta-analytic approach to explore the relationship between mindfulness and problematic smartphone use systematically. Systematic literature searches for papers published before February 2024 yielded 29 studies, including 17,534 individuals and 30 effect sizes. The sample comprised participants from Eastern cultures (n = 22 studies) and Western cultures (n = 8 studies).

RESULTS

The meta-analysis revealed a significant negative correlation between mindfulness and problematic smartphone use (r = -0.399, 95 % CI [-0.457, -0.338], p < 0.001). Moderator analyses revealed the strongest relationship when using the Child and Adolescent Mindfulness Measure (CAMM) (r = -0.498), while the Five Facet Mindfulness Questionnaire (FFMQ) showed the weakest (r = -0.245). Cultural background analyses indicated stronger effects in Eastern cultures (r = -0.428) compared to Western cultures (r = -0.316). Gender analyses revealed stronger effects among female participants (β = -0.510, p < 0.05).

CONCLUSION

These findings demonstrate that mindfulness serves as an effective approach to addressing problematic smartphone use. The significant moderating effects identified have important implications for the implementation of mindfulness-based interventions in educational settings.

The mediating role of specific coping styles in the relationship between perceived social support and depressive symptoms in adolescents

BACKGROUND

Depressive symptoms are one of the most common mental health problems in adolescence, and the relationship between perceived social support and depressive symptoms has been well-studied. However, little research has been conducted on the mediating role of specific coping styles in the relationship. Therefore, the primary purpose of this study was to examine the mediating role of specific coping styles in perceived social support and depressive symptoms in adolescents.

METHODS

A questionnaire was administered to 3887 Chinese junior and senior high school adolescents (mean age = 15.72 years, SD = 1.43) using a multistage stratified and cluster sampling method. The PROCESS model 4 was used to conduct a multiple mediation analysis.

RESULTS

Problem solving, seeking help, venting, fantasy and endurance mediated the relationship between internal family support or external family support and depressive symptoms. The problem solving coping style mediated the largest amount of effect, accounting for 22.32 % and 19.05 %, respectively.

LIMITATIONS

This study used a cross-sectional survey and self-reported information, which may be the main research limitation.

CONCLUSIONS

The findings suggest that higher social support not only directly reduces the likelihood of adolescent depression, but also influences depressive symptoms through specific coping styles. This may help further develop targeted prevention and interventions for at-risk adolescents for specific coping styles.

The association between digital addiction and interpersonal relationships: A systematic review and meta-analysis

Digital addiction (DA) has been identified as an emerging public health problem worldwide. However, the extent and direction of the association between DA and interpersonal relationships (IRs) are unknown. Does DA have adverse effects on IRs, and how credible is the evidence for this association in published analyses of real-world data? Using the PRISMA method, we conducted a meta-analysis to quantitatively synthesize the results of the relevant studies and obtain reliable effect size estimates and performed an analysis of moderating factors. A systematic literature search identified 98 studies involving 134,593 participants and 99 effect sizes. A significant negative association was observed between DA and IRs. Importantly, our meta-analysis revealed that the DA subtype has no significant moderating effect on IRs, suggesting that combining numerous categories of DA rather than focusing on specific forms of DA may be appropriate for understanding the relationship between DA and IRs. Relative to the IR subtype, the association between DA and offline relationships is significant and negative, whereas the association between DA and online relationships is significant and positive. The strength of the relationship is also influenced by the participants' sex ratio, educational level, and measurement tools. These results may help resolve the disagreement over the magnitude and direction of the association between DA and IRs and have potential implications for the treatment of DA.