The recent interest in promoting active commuting necessitates an accurate and feasible method to measure ambulatory physical activity and track routes, for sound evaluation of these interventions. Previous studies used basic measures such as "hands up" surveys, travel diaries, questionnaires, and physical activity recall (Boarnet, Anderson, Day, McMillan, & Alfonzo, 2005). However, these measures are Susceptible to social desirability and may result in misreported activity levels (Corder, Ekelund, Steele, Wareham, & Brage, 2008). Other more objective measures of commuting behavior include pedometers, accelerometers, and Geographic Information Systems-derived shortest routes (e.g., from home to school; Michaud-Thomson, Davidson, & Cuddihy, 2003; Sirard, Riner, McIver, & Pate, 2005; Timperio et al., 2006).
- physical activity
- geographic positioning system
- active commuting