Table 1.

Process evaluation methods for the physical activity club

Characteristic	Data sources	Instruments/measurement	Timing	Data collectors or survey completers
Reach	• Attendance records of girls	• Attendance sheets & iPad	• Daily	• PA club manager
Dose received (exposure)	• ActiGraph GT3X-plus counts	• 5 girls randomly selected to wear accelerometer	• Every other week	• PA club coaches and manager
Dose received (satisfaction)	• Process evaluator observing club • Girls’ evaluation • PA club coaches’/managers’ evaluation	• 2-item survey to evaluate receptivity of intervention by process evaluators • 2-item survey to evaluate receptivity of intervention by girls • 3-item survey to evaluate receptivity of intervention by girls and the overall club as perceived by club managers and coaches	• Weeks 3, 9, & 15 • Post-intervention • Post-intervention	• Process evaluator • Girls • PA club coaches and managers
Dose delivered	• PA club observations	• Combination of SOFIT and ALT-PE instruments; a stopwatch to record and ruler to mark beginning and end of activity times in minutes were used.	• Weeks 3, 9, & 15	• Process evaluator
Fidelity	• Survey	• 8-item survey to evaluate extent to which intervention reflects conceptual framework • 11-item survey completed by girls to assist in determining extent to which intervention reflects conceptual framework • 11-item survey completed by club managers and coaches to assist in determining extent to which intervention reflects conceptual framework	• Weeks 3, 9, & 15 • Post-intervention • Post-intervention	• Process evaluator • Girls • PA club coaches and managers

ALT-PE academic learning time - physical education, PA physical activity, SOFIT system for observing fitness instruction time