According to the World Health Organization, only 15% of 11-17-year-old girls meet the recommended daily physical movement guidelines (e.g., 60 minutes per day). Despite extensive research highlighting the protective factors associated with sport on both mental and physical health, body image concerns are a key barrier to girls' participation in, and enjoyment of, sport. Sports-related environments and society more broadly further exacerbate these concerns through harmful gender stereotypes that perpetuate female objectification, discrimination, and harassment. This includes the promotion of unrealistic and sexualized appearances of female athletes, uncomfortable and objectifying uniforms, and appearance and competence-related teasing from male and female peers, as well as coaches.

The magnitude of this issue and how best to address it can be understood from a socioecological perspective. Researchers suggest developing multi-faceted and multi-tiered approaches that have scope for targeting the individual, interpersonal, organizational, and societal levels. The current research will test the first coach-led body image program for girls in sport. The Body Confident Athletes program was co-created with girls and coaches through an international multi-disciplinary partnership between academics, health professionals, industry, and community organizations. Multi-disciplinary partnerships can create a supportive landscape by upskilling girls and influential community members (e.g., coaches) in dealing with body image concerns, which will likely lead to sustained sports participation and biopsychosocial benefits.

As such, the aim of the present study is to conduct a large-scale randomized controlled trial (RCT) to evaluate the effectiveness of the Body Confident Athletes program. The program consists of three 60-minute sessions delivered by coaches to adolescent girls. Each session tackles a distinct theme related to body image in the sport context. Outcomes will be assessed at pre-intervention, post-intervention (three weeks later), and follow-up (at one and three months). Outcomes will include body image and sport enjoyment (primary outcomes); body appreciation, attuned self-care, resisting objectification, and positive and negative affect (secondary outcomes); and intervention acceptability, fidelity, and adherence (process outcomes). The comparison control arm will be a waitlist control condition.

To undertake this project, sports organizations will be cluster-randomized into the intervention group or the control group, with 800 girls anticipated in each arm. Those in the intervention condition will complete baseline assessments (target outcomes and demographic information), take part in the three-week intervention, and then complete the post-intervention and follow-up assessments (target and process outcomes). Those in the waitlist control condition will complete the baseline assessments (target outcomes and demographic information), a second assessment three weeks later (target outcomes only), and follow-up assessments after one and three months, after which they will get access to the intervention. However, their engagement with the intervention will not be monitored or assessed. At completion of the post-intervention survey, all participants will receive a debrief form, outlining the study aims and objectives, and support resources for body image and eating concerns.

The investigators hypothesize that girls who take part in the Body Confident Athletes intervention will report higher levels of body esteem, sport enjoyment, body appreciation, attuned self-care, resisting objectification, and positive affect and lower levels of negative affect at post-intervention and follow-up, compared to girls who do not take part in the intervention.

Note: This research has been approved by the University of the West of England Research Ethics Committee (ref no. HAS.21.03.120) and the University of Minnesota Institutional Review Board (ref no. STUDY00012457).

Inclusion Criteria:

• Girls aged 11-17 years old
• English speaking
• Residing in the United States

Exclusion Criteria:

• n/a

We will include girls in the current study, referring to the girl child defined as younger than 18 years old who was assigned female at birth and all individuals who identify as a girl.