A Digital Intervention for Australian Adolescents Above a Healthy Weight (Health Online for Teens): Protocol for an Implementation and User Experience Study

PACT: Developing and Evaluating a Digital Sexual Consent Program for Youth

Understanding affirmative sexual consent is crucial for violence prevention and health promotion, yet few adolescents receive adequate consent education. The current study aimed to evaluate the acceptability and preliminary efficacy of a brief online program designed to teach adolescents information and skills about communicating and interpreting affirmative sexual consent (PACT: Promoting Affirmative Consent among Teens) in a randomized controlled trial with a national sample of 833 U.S. adolescents (ages 14-16; 42% White, 17% Asian, 17% Black, 13% Latinx; 53% girls, 31% boys, 12% non-binary; 45% heterosexual; 29% sexually active). PACT, grounded in health behavior change and persuasion theories, was developed using feedback from youth advisors and usability testers. Participants considered the program generally acceptable. Compared to youth who completed a control program, PACT was efficacious at shifting three measures of affirmative consent cognitions (i.e., knowledge, attitudes, self-efficacy) from baseline to immediate posttest. Youth who completed PACT also demonstrated more accurate affirmative consent knowledge at 3 months post-baseline. PACT's effects on consent cognitions were generally similar among youth with various gender, racial/ethnic, and sexual identities. We discuss next steps for this program, including the possibilities of expanding to include additional concepts and tailoring to address the unique needs of specific youth.

Redeveloping a Digital Sexual Health Intervention for Adolescents to Allow for Broader Dissemination: Implications for HIV and STD Prevention

HIV/STDs and unintended pregnancy persist among adolescents in the United States; thus, effective sexual health interventions that can be broadly disseminated are necessary. Digital health interventions are highly promising because they allow for customization and widespread reach. The current project involved redeveloping and expanding HEART (Health Education and Relationship Training)-a brief, digital sexual health intervention efficacious at improving safer sex knowledge, self-efficacy, and behavior-onto an open-source platform to allow for greater interactivity and accessibility while reducing long-term program costs. The authors describe the process of adapting, reprogramming, and evaluating the new program, which may serve as a guide for investigators seeking to adapt behavioral interventions onto digital platforms. The final product is an open-source intervention that can be easily adapted for new populations. Among 233 adolescents (M_age = 15.06; 64% girls), HEART was highly acceptable and generally feasible to administer, with no differences in acceptability by gender or sexual identity.

Annual rhythms in adults' lifestyle and health (ARIA): protocol for a 12-month longitudinal study examining temporal patterns in weight, activity, diet, and wellbeing in Australian adults

BACKGROUND

Almost one in three Australian adults are now obese, and the rate continues to rise. The causes of obesity are multifaceted and include environmental, cultural and lifestyle factors. Emerging evidence suggests there may be temporal patterns in weight gain related, for example, to season and major festivals such as Christmas, potentially due to changes in diet, daily activity patterns or both. The aim of this study is to track the annual rhythm in body weight, 24 h activity patterns, dietary patterns, and wellbeing in a cohort of Australian adults. In addition, through data linkage with a concurrent children's cohort study, we aim to examine whether changes in children's body mass index, activity and diet are related to those of their parents.

METHODS

A community-based sample of 375 parents aged 18 to 65 years old, residing in or near Adelaide, Australia, and who have access to a Bluetooth-enabled mobile device or a computer and home internet, will be recruited. Across a full year, daily activities (minutes of moderate to vigorous physical activity, light physical activity, sedentary behaviour and sleep) will be measured using wrist-worn accelerometry (Fitbit Charge 3). Body weight will be measured daily using Fitbit wifi scales. Self-reported dietary intake (Dietary Questionnaire for Epidemiological Studies V3.2), and psychological wellbeing (WHOQOL-BREF and DASS-21) will be assessed eight times throughout the 12-month period. Annual patterns in weight will be examined using Lowess curves. Associations between changes in weight and changes in activity and diet compositions will be examined using repeated measures multi-level models. The associations between parent's and children's weight, activity and diet will be investigated using multi-level models.

DISCUSSION

Temporal factors, such as day type (weekday or weekend day), cultural celebrations and season, may play a key role in weight gain. The aim is to identify critical opportunities for intervention to assist the prevention of weight gain. Family-based interventions may be an important intervention strategy.

TRIAL REGISTRATION

Australia New Zealand Clinical Trials Registry, identifier ACTRN12619001430123 . Prospectively registered on 16 October 2019.