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Cress, M. Elaine FACSM1; Buchner, David FACSM2; Schwartz, Robert3; DeLateur, Barbara4
1University of Georgia, Athens, GA. 2University of Illinois, Urbana-Champaign, IL. 3University of Colorado, Denver, CO. 4Johns Hopkins University, Baltimore, MD.
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The curvilinear relationship of physiological capacity to function is well established (Buchner & DeLateur, 1992). A threshold between function on the Continuous Scale Physical Functional Performance (CS-PFP) and maximal aerobic capacity and strength was identified as 57 CI: 48-59 (Cress & Meyer, 2003).
PURPOSE: To determine the functional performance of 3 levels of self-reported function: "limited a lot", "limited a little", "not limited at all".
METHODS: In a cross-sectional design, independent and retirement community residents were assessed on everyday household tasks (e.g carry groceries, climb stairs, pick up scarves, 6-min fast walking) of the CS-PFP test that produces scores ranging from 0-100 with threshold values listed above. SF36 physical function scale has 10 questions with 3 level responses as listed above. An ANOVA was used to determine CS-PFP total score mean differences among the 3 levels with a Duncan post hoc analysis.
RESULTS: Older adults (n=186) age 77.2± 7.2; range 60-97, volunteered. Table 1: CS-PFP score (CS-PFP Units) for each response to selected SF36 Physical Function Questions. p<.05 *different from other two categories; # different from each of the other categories. Self-reporting "limited a lot" was reflected by CS-PFP total scores below the threshold and significantly below the other categories. "Limited a little" was generally within the confidence interval of the threshold whereas "not limited at all" reporting was higher than actual capability.
CONCLUSION: Older adults perceived a gradient of limitation that was consistent with functional performance. Recognition of functional limitation may be an important prerequisite for behavioral change to improve function. Supported by National Institutes of Health grants 1 R29 AG10267, Centers for Disease Control and Prevention grant U48-CCU009654; and the University of Georgia.
© 2011 American College of Sports Medicine
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