Table 4.

Group C: Classroom-based interventions that trained same-age peers.

Author, Year	Intervention Name or Description	Population Characteristics: Grade Level/Age (Sample Size), Location	Group Receiving Training	Training Design	Intervention Frequency and Duration	Evaluation Indicators and Notable Results
Lo, 2008 1 [59]	Fluids Used Effectively for Living (FUEL)	Grade 9 (n = 113), Saskatchewan, Canada	Same-age, Grade 9 peers (worked with cross-age peers, see Group B)	Had their own two-week training intensive to orient them to the content and build teamwork. They were connected to cross-age peers for guidance.	Six-week program, one 45-min session each week	Outcome: changes in beverage intake, knowledge, and attitudes Process: participant satisfaction with content and delivery of the program. See Table 2 for results
Stock, 2007 [67]	Healthy Buddies	4th–7th grade (n = 199) British Columbia, Canada	Cross-age peers. In this case, the students in the target age range for the study were the older peers	Cross-age peers received a lesson from the intervention teacher once a week and then taught that lesson to their younger “buddies” that same week. Older students still developing leadership skills were paired with another older student with strong leadership ability.	21 weeks—the cross-age peers receive (45 min) and then deliver (30 min) a lesson once per week. Paired classes also had two 30-min structured physical activity sessions together weekly.	Outcome: changes in height, weight, blood pressure, and heart rate; 9-min run, knowledge of nutrition and physical activity, and eating and physical activity behaviors.

¹ Also included in Group B.