Process evaluation is an assessment of the
implementation of an intervention. A process
evaluation component was embedded in the
HEALTHY study, a primary prevention trial
for Type 2 diabetes implemented over 3 years
in 21 middle schools across the United States.
The HEALTHY physical education (PE) intervention
aimed at maximizing student engagement
in moderate-to-vigorous physical activity
through delivery of structured lesson plans by
PE teachers. Process evaluation data collected
via class observations and interventionist interviews
assessed fidelity, dose delivered, implementor
participation, dose received and barriers.
Process evaluation results indicate a high level
of fidelity in implementing HEALTHY PE
activities and offering 225 min of PE every
10 school days. Concerning dose delivered, students
were active for approximately 33 min of
class, representing an average of 61% of the
class time. Results also indicate that PE teachers
were generally engaged in implementing
the HEALTHY PE curriculum. Data on dose
received showed that students were highly engaged
with the PE intervention; however, student