Walk as directed! Adolescents' adherence to pedometer intervention protocol.

Area of Science:

• Pediatric physical activity research
• Adolescent health behaviors
• Intervention adherence studies

Background:

• Pedometer use is common in youth physical activity (PA) interventions, yet adherence challenges remain understudied.
• Lack of literature exists on the prevalence and reasons for protocol nonadherence in this demographic.

Purpose of the Study:

• To investigate adherence behaviors and identify reasons for protocol nonadherence in early adolescents during a PA intervention.
• To inform the design of future interventions by understanding barriers to adherence.

Main Methods:

• Monitored adherence in 43 early adolescents (mean age 12.3) over an 8-week faith-based intervention.
• Collected student-reported reasons for protocol breaches to develop a post-intervention questionnaire.
• Analyzed adherence data using frequency, percentage, cross-tabulations, and chi-square tests for gender/age differences.

Main Results:

• Recording PA in logs decreased by 85%, attributed to forgetfulness and time constraints.
• Frequent pedometer issues included error codes, incorrect wear (37%), and shaking (58%-69%) to artificially inflate step counts.
• Gender and grade-level differences were observed in specific PA behaviors like stair usage and speed stepping.

Conclusions:

• Adolescents exhibit baseline nonadherence to PA intervention protocols, necessitating consideration in intervention design.
• Integrating intervention tasks into the curriculum and providing adequate opportunities can mitigate adherence barriers.
• Further research is needed to validate findings across different school settings and quantify behaviors in unstructured environments.