1. Bauman, A., Phongsavan, P., Schoeppe, S., & Owen, N. (2006). Physical activity measurement-a primer for health promotion. Promotion and Education, 13(2), 92–103.
2. Corder, K., Ekelund, U., Steele, R. M., Wareham, N. J., & Brage, S. (2008). Assessment of physical activity in youth. Journal of Applied Physiology, 105(3), 977–987.
3. Wareham, N. J., & Rennie, K. L. (1998). The assessment of physical activity in individuals and populations: Why try to be more precise about how physical activity is assessed? International Journal of Obesity and Related Metabolic Disorders, 22(suppl 2), S30–S38.
4. Bennett, K. J., Olatosi, B., & Probst, J. C. (2008). Health disparities: A rural-urban chartbook. South Carolina Rural Health Research Center. Retrieved from http://rhr.sph.sc.edu/report/(73)%20Health%20Disparities%20A%20Rural%20Urban%20Chartbook%20-%20Distribution%20Copy.pdf .
5. Jones, C. A., Parker, T. S., Ahearn, M., Mishra, A. K., & Variyam, J. N. (2009). Health status and health care access of farm and rural populations. United States Department of Agriculture: Economic information bulletin 57. Retrieved from http://www.ers.usda.gov/media/155453/eib57_1_.pdf .