Berg, K. (1989). "Measuring balance in the elderly: preliminary development of an instrument." Physiotherapy Canada 41(6): 304-311.
Dai, B., Ware, W. B., et al. (2012). "A structural equation model relating physical function, pain, impaired mobility (IM), and falls in older adults." Arch Gerontol Geriatr 55(3): 645-652. Find it on PubMed
Dite, W. and Temple, V. A. (2002). "Development of a clinical measure of turning for older adults." Am J Phys Med Rehabil 81(11): 857-866; quiz 867-858. Find it on PubMed
Gill, T. M., Williams, C. S., et al. (1997). "The role of change in physical performance in determining risk for dependence in activities of daily living among nondisabled community-living elderly persons." Journal of clinical epidemiology 50(7): 765-772.
Gill, T. M., Williams, C. S., et al. (1995). "Assessing risk for the onset of functional dependence among older adults: the role of physical performance." Journal of the American Geriatrics Society 43(6): 603-609.
Lipsitz, L. A., Jonsson, P. V., et al. (1991). "Causes and correlates of recurrent falls in ambulatory frail elderly." J Gerontol 46(4): M114-122. Find it on PubMed
Schenkman, M., Cutson, T. M., et al. (1997). "Reliability of impairment and physical performance measures for persons with Parkinson's disease." Phys Ther 77(1): 19-27. Find it on PubMed
Schenkman, M., Cutson, T. M., et al. (2002). "Application of the continuous scale physical functional performance test to people with Parkinson disease." Journal of Neurologic Physical Therapy 26(3): 130-138. Find it on PubMed
Schenkman, M., Ellis, T., et al. (2011). "Profile of functional limitations and task performance among people with early- and middle-stage Parkinson disease." Phys Ther 91(9): 1339-1354. Find it on PubMed
Shubert, T. E., Schrodt, L. A., et al. (2006). "Are scores on balance screening tests associated with mobility in older adults?" J Geriatr Phys Ther 29(1): 35-39. Find it on PubMed
Tager, I. B., Swanson, A., et al. (1998). "Reliability of physical performance and self-reported functional measures in an older population." J Gerontol A Biol Sci Med Sci 53(4): M295-300. Find it on PubMed