No abstract

The link between engagement in non-suicidal self-injury (NSSI)–related activities on SNS (e.g. viewing, commenting, sharing and uploading NSSI content) with body image and NSSI behaviour remains under researched in adolescents with EDs. The main aim of the current research was to examine associations between NSSI-related activities on SNS with body image and NSSI behaviour severity among female adolescents diagnosed with an ED. A total of 52 female adolescents (mean age = 15.35 years, SD = 1.49) diagnosed with an ED completed self-report questionnaires related to NSSI behaviour, SNS usage and body image. Participants were divided into two groups: low NSSI behaviour severity (from 0 to 10 NSSI behaviours; n = 28) and high NSSI behaviour severity (more than ten NSSI behaviours; n = 24). Within the high NSSI severity group, individuals that comment and share NSSI online content significantly reported higher negative body image. A hierarchical binary logistic regression showed that the frequency of NSSI online content on SNS emerged as significant predictor of NSSI behaviour severity within last year after controlling for body image and searching for ED content on SNS. Our findings suggest that not only searching for ED content, but also being daily engaged in NSSI online activities may increase the risk of NSSI behaviour severity in female adolescents with EDs.

Background and objectives. The role of anxiety as a risk factor for compulsive exercise elements among adolescents is unclear. Intolerance of uncertainty (IU), which is a risk feature for anxiety and eating disorders, may be an important, unexplored risk factor for compulsive exercise dimensions. This study aimed to examine the role of IU dimensions and anxiety on compulsive exercise elements. Given previous evidence indicating gender differences in compulsive exercise and IU levels, gender was included as a moderator. Design/methods. A total of 201 adolescent girls and 207 adolescent boys completed the following questionnaires: Eating Disorder Inventory-3, Intolerance of Uncertainty Scale-12 (IUS-12), a brief version of the State-Trait Anxiety Inventory and the Compulsive Exercise Test (CET).Results. The hierarchical regression analyses showed that the interaction between IUS-Prospective and gender emerged as a significant predictor of CET-Avoidance and CET-Weight control exercise beyond symptoms of eating disorders and anxiety. Post hoc analysis revealed that the IUS-Prospective was a significant predictor of CET-Avoidance and CET-Weight Control among boys, but not among girls.Conclusions. These findings suggest that prospective IU may contribute towards obsessivecompulsive attitudes towards exercise among adolescent population, specifically among boys.

Anxiety has been suggested to be a key contributing factor for compulsive exercise, however, existing literature has demonstrated contradictory relationships between anxiety and compulsive exercise among adolescents. According to the Emotional Cascade Model (ECM), factors such as rumination and emotional suppression may mediate the association between affect and exercise. The current study therefore aimed to investigate whether rumination and emotional suppression mediate the relationship between anxiety and compulsive exercise in predicting ED symptoms in adolescents. Questionnaires assessing compulsive exercise, anxiety, depressive rumination, emotional suppression, and ED symptoms were completed by 212 adolescent males (Mage = 13.39, SD = 1.22) and 189 adolescent females (Mage = 13.64, SD = 1.29). The structural equation model showed indirect effects between anxiety and compulsive exercise through rumination and emotional suppression in males but not in females. Moreover, anxiety had an indirect effect on eating disorder symptoms through rumination, emotional suppression and compulsive exercise in both males and females. In line with ECM, the results suggest that rumination and emotional suppression may have a key role in the association between anxiety, compulsive exercise and eating disorder symptoms in adolescents. These findings suggest that compulsive exercise may be used as a dysfunctional coping mechanism to escape from a negative emotional cascade generated by the interaction of anxiety, rumination and emotional suppression. Future longitudinal studies to test the role of compulsive exercise as a dysfunctional behaviour in the ECM are needed.

Society has produced many idealized and unattainable standards of beauty. These may be internalized by young children, increasing the risk of body dissatisfaction, which is the strongest predictor of eating disorders. Prompted by this concern, the aim of the present research was to identify and analyze the instruments that have been used to measure body perception and body dissatisfaction in preschoolers. To this end, we reviewed 18 articles published between 2005 and 2017 and retrieved from the PsycINFO and MEDLINE databases. Our results indicated that the instruments used to assess body image comprise silhouette scales, interviews and questionnaires. The results suggest that body dissatisfaction is higher when assessed with silhouette scales compared to questionnaires and interviews in preschoolers. When developing instruments to assess preschoolers' body image, it is important to take their cognitive development into account.