1. Barfield, J. P., et al. (2016). "Exercise Intensity During Power Wheelchair Soccer." Arch Phys Med Rehabil 97(11): 1938-1944.     
2. Barfield, J. P. and L. A. Malone (2013). "Perceived exercise benefits and barriers among power wheelchair soccer players." J Rehabil Res Dev 50(2): 231-238.
3. Jeffress, M. S. and W. J. Brown (2017). "Opportunities and Benefits for Powerchair Users Through Power Soccer." Adapt Phys Activ Q 34(3): 235-255.

Updated: 4/17/2018