A. Cook

Association of body mass index to meeting physical activity recommendations.

B. Ainsworth, P. Sharpe, Brent Hutto, 2004, American journal of health behavior.

Development and Use of a Tool for Assessing Sidewalk Maintenance as an Environmental Support of Physical Activity

K. Kirtland, Joel E Williams, P. Sharpe, 2005, Health promotion practice.

Awareness and use of community walking trails.

Dawn K. Wilson, B. Ainsworth, J. Reed, 2004, Preventive medicine.