Table 2 Schedule of enrolment, interventions, and assessments according to the Standard Protocol Items: Recommendations for Interventional Trials

TIMEPOINT:

-t₁

t₁

Intervention

t₂

t₃

t₄

TIME:

 Days from baseline assessment

-21

0

 + 22

 + 50

 + 106

ENROLMENT:

 Eligibility screen

X

 Parental consent

X

 Participant informed assent

X

 Randomisation/ allocation

X

INTERVENTIONS:

 Body Confident Athletes

 Waitlist Control

ASSESSMENTS Baseline variables:

 Age

X

X

X

X

X

 Gender

X

X

X

X

X

 Ethnicity

X

X

X

X

 Race

X

X

X

X

 State and region of residence

X

X

X

X

Primary Outcome measures:

 Trait body image (BESAA)

X

X

X

X

Secondary outcome measures

 Body Appreciation

X

X

X

X

 Attuned Self-Care

X

X

X

X

 Resisting Objectification

X

X

X

X

 Sports Enjoyment

X

X

X

X

 Positive and Negative Affect

X

X

X

X

 Intervention Fidelity (Coaches’ Delivery and Athletes’ Comprehension)

X

 Intervention Attendance

X