OBJECTIVE: To establish the concurrent validity of our new balance instrument, functional reach (FR = maximal safe standing forward reach), as a marker of physical frailty compared with other clinical measures of physical performance. DESIGN, SETTING AND PARTICIPANTS: 45 community-dwelling persons age 66-104 were evaluated at one point in time using (1) FR (yardstick method), (2) Physical and Instrumental Activities of Daily Living (PADL, IADL), (3) Life Space, a 3-point measure of social mobility, (4) 10-item hierarchical mobility skills protocol, (5) 10-foot walking speed, (6) one-footed standing, and (7) tandem walking. Data analysis employed Spearman correlations. Partial r's were also calculated after controlling for age. RESULTS: The FR performance range was broad (4.3-16.5 inches, mean 10.9, SD 3.1). Except for PADL, the association of FR with the other physical performance measures was strong, with r's ranging from 0.64-0.71; the association of FR with PADL was 0.48. After controlling for age in the regression analysis, partial r's ranged from 0.52-0.63. The association of FR with age was -0.50. CONCLUSIONS: Based on cross-sectional data, FR is a practical instrument that correlates with physical frailty even more than with age.
OBJECTIVE: To establish the concurrent validity of our new balance instrument, functional reach (FR = maximal safe standing forward reach), as a marker of physical frailty compared with other clinical measures of physical performance. DESIGN, SETTING AND PARTICIPANTS: 45 community-dwelling persons age 66-104 were evaluated at one point in time using (1) FR (yardstick method), (2) Physical and Instrumental Activities of Daily Living (PADL, IADL), (3) Life Space, a 3-point measure of social mobility, (4) 10-item hierarchical mobility skills protocol, (5) 10-foot walking speed, (6) one-footed standing, and (7) tandem walking. Data analysis employed Spearman correlations. Partial r's were also calculated after controlling for age. RESULTS: The FR performance range was broad (4.3-16.5 inches, mean 10.9, SD 3.1). Except for PADL, the association of FR with the other physical performance measures was strong, with r's ranging from 0.64-0.71; the association of FR with PADL was 0.48. After controlling for age in the regression analysis, partial r's ranged from 0.52-0.63. The association of FR with age was -0.50. CONCLUSIONS: Based on cross-sectional data, FR is a practical instrument that correlates with physical frailty even more than with age.
Authors: Mark D Eisner; Carlos Iribarren; Paul D Blanc; Edward H Yelin; Lynn Ackerson; Nancy Byl; Theodore A Omachi; Stephen Sidney; Patricia P Katz Journal: Thorax Date: 2010-11-03 Impact factor: 9.139
Authors: Sarinnapha Vasunilashorn; Antonia K Coppin; Kushang V Patel; Fulvio Lauretani; Luigi Ferrucci; Stefania Bandinelli; Jack M Guralnik Journal: J Gerontol A Biol Sci Med Sci Date: 2009-01-31 Impact factor: 6.053
Authors: Mark D Eisner; Carlos Iribarren; Edward H Yelin; Stephen Sidney; Patricia P Katz; Lynn Ackerson; Phenius Lathon; Irina Tolstykh; Theodore Omachi; Nancy Byl; Paul D Blanc Journal: Am J Epidemiol Date: 2008-03-14 Impact factor: 4.897
Authors: Shahrul Kamaruzzaman; George B Ploubidis; Astrid Fletcher; Shah Ebrahim Journal: Health Qual Life Outcomes Date: 2010-10-28 Impact factor: 3.186