Testing modified gender-moderated exercise and self-esteem (EXSEM) model of positive body image in adolescents

Association between Motivation in Physical Education and Positive Body Image: Mediating and Moderating Effects of Physical Activity Habits

Concerns about body image might prevent adolescents from participating in physical education (PE) classes and physical activities during leisure-time. In this cross-sectional study, we assessed the relationships between teacher support of autonomy, student motivations for PE, and positive body image, in a sample of Lithuanian adolescents. A total of 715 adolescents (51.89% girls) participated in the study. Ages ranged from 14 to 18 years, with a mean age of 16.00 (SD = 0.79) for girls and 15.99 (SD = 0.75) for boys. The questionnaire consisted of demographic questions, the Learning Climate Questionnaire, the Revised Perceived Locus of Causality in Physical Education Questionnaire, the Body Appreciation Scale-2, the Self-Report Habit Index for Physical Activity (PA), perceived physical fitness (PPF), and Godin Leisure-Time Exercise Questionnaire. The results showed that teacher support for students' autonomy was associated with higher positive body image. In adolescent girls, autonomous motivation for PE was the mediator between teacher support of autonomy and positive body image. The associations between self-determined motivation in PE and positive body image were mediated by PPF on one hand, and through PA habits and PPF on the other hand of the structural equation model (in girls). PA habits moderated associations between PE motivation and PPF. Associations between PE motivation and PPF were stronger in girls with the lowest PA habits compared to girls with mean PA habits. These results suggest that PE classes are important for promoting students' positive body images. PE teachers are advised to use pedagogical strategies that promote the self-determined motivation of students for PE. Increased self-determined motivation for physical education might be an effective strategy for physical self-perception and positive body image promotion in adolescent girls, especially those with low PA habits.

Media Pressures, Internalization of Appearance Ideals and Disordered Eating among Adolescent Girls and Boys: Testing the Moderating Role of Body Appreciation

The aim of the present study was to test the moderating role of body appreciation in the mediation model of media pressures, internalization of appearance ideals, and disordered eating in adolescents. One thousand four hundred and twelve Lithuanian adolescents (40.4% were boys, age range: 15-18 years) participated in the cross-sectional study. The mean age of the sample was 16.9 (SD (standard deviation) = 0.5) for girls and 17.0 (SD = 0.4) for boys. Adolescents completed a questionnaire consisting of measures of body appreciation (Body Appreciation Scale-2 (BAS-2)), disordered eating (Eating Disorder Examination Questionnaire 6 (EDE-Q 6)), attitudes towards sociocultural pressures towards appearance (Sociocultural Attitudes towards Appearance Questionnaire 4 (SATAQ-4)), and time browsing internet for leisure purposes. To assess the primary hypotheses, moderated mediation models were tested separately in boys and girls. In girls, body appreciation moderated associations between media pressures and internalization of thin body ideals and between internalization of thin appearance ideals and disordered eating. In boys, body appreciation moderated only the association between media pressures and disordered eating. The effect of media pressures on disordered eating was the highest in boys with the lowest body appreciation. Body appreciation protects adolescent girls from internalization of thin appearance ideals in the presence of media pressures and from disordered eating in the case of internalization of thin body appearance ideals. In boys, body appreciation provides a protective effect from media pressures towards appearance to disordered eating behaviors. The findings of the present study could inform intervention programs that aim to prevent disordered eating, strengthen positive body image, and promote healthy eating in adolescent girls and boys. Specific programs might be beneficial in preventing disordered eating in boys with low body appreciation.