Project Overview +

This school-based program encourages moderate to vigorous physical activity among middle school girls. During the 17 week intervention period, girls meet with the school nurse for 2 motivational interviewing-based sessions, attend a daily exercise 'club' after school, and receive a tailored program delivered on iPads.

Related Media +

Related Media:

Aims +

The purpose of this school-based cluster randomized controlled trial (RCT) is to test the efficacy of our intervention to increase moderate to vigorous physical activity among middle school girls.

Participants +

Participants are recruited from 24 schools in Michigan. Half of the schools are randomized to the control condition and half are randomized to the intervention condition. Participants include 6th and 7th grade girls (ages 10-13; 8th graders are included in cases where a middle school has only 7th and 8th grades). Girls must be available and willing to participate in the physical activity club 4 days a week for 6 months; available for follow-up (9 mos. after intervention ends); agree to random assignment; and be able to read, understand, and speak English.

Intervention +

The intervention is a 17-week period, followed by a 9-month follow-up period. At the start of the intervention, the girls go through a variety of assessments, including demographic, psychosocial measures, along with objective and self-reported physical activity and fitness measures.

After completing the baseline assessments, girls in the intervention group begin attending a physical activity club that meets 4 days a week after school. They also meet with a school nurse trained in Motivational Interviewing.

Halfway through the intervention, they complete a second assessment and receive a tailored web-based program delivered over iPads.

Near the end of the 17 weeks, they complete a third assessment and complete a visit with the MI-trained school nurse again.

During the 9 month follow-up period, the girls will receive tailored postcards to encourage them to continue to be active. The girls will wear accelerometers for one week three separate times during the study. During these weeks, the girls will receive either text messages or automated phone calls to remind them to wear their devices each day.