Van Puymbroeck, PhD, CTRS, CRC, M., Hsieh, MS, P.-C. and Pernell, BS, CTRS, D. (2008) “Comparison of two physical activity interventions on the physical fitness for informal caregivers”, American Journal of Recreation Therapy, 7(1), pp. 35–41. doi: 10.5055/ajrt.2008.0006.