Relationship Between Physical Performance and Self‐Perceived Physical Function

Abstract

Self-selected gait speed is a global indicator of self-perceived physical function over a broad range of abilities. External determinants (depressive symptoms, cognitive function, marital status, etc.) affect self-perceived function in both groups, but gait speed is the greatest single predictor of self-perceived function. In nursing home residents depressive symptomatology is related to self-perceived.

Measuring Activity Limitations in Walking: Development of a Hierarchical Scale for Patients With Lower-Extremity Disorders Who Live at Home

“…The finding that amputees more often respond positively to items about walking in a different way over "obstacles" (see appendix 1; items 15, 31) may reflect the fact that unilateral amputees tend to put their nonamputated leg on or over an obstacle first. The finding that amputees respond more often to items about the use of aids (see appendix 1; items 34,35,40) may reflect the fact that they use more aids than nonamputees, or that some refer to their prosthesis as an aid. Although items with DIF do not always produce poor measurements, 55 the use of the 29 items without DIF only can be considered when comparisons are made between amputees and nonamputees.…”

“…Appendix 1 provides a summary of the instructions for the patients and lists the 41 items. The items operationalize 9 aspects of walking: (1) 18,34,35,40), and (9) use of help (items 19,36,41). The items are written in behavioral terms and refer to what patients actually do, not to what they think that they can do.…”

“…The DIF tended to be mainly attributable to the amputees. Consequently, in an additional analysis, we dichotomized the study population (amputees vs nonamputees) and found DIF with respect to 6 items (items 13,15,31,34,35,40) (fig 1). Notice that for amputees, these 6 items all have higher mean scores, which will result in their having higher sum scores.…”

“…[13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31] Studies of the relation between a patient's test performance and self-reported perception of activity limitations have generally found only lowto-moderate correlations. 20,[32][33][34][35][36][37][38][39] More recently, Stratford et al 39 have questioned the content validity of timed performance tests. Because none of the existing instruments provide a detailed measurement of activity limitations in walking, we developed a new scale that: (1) is suitable for the assessment of patients with lower-extremity disorders who live at home; (2) provides a detailed measurement of activity limitations in walking; (3) is discriminative, which means that it can be used for measuring cross-sectional differences in limitations in walking between patients or subgroups of patients; and (4) is hierarchical, which implies that it consists of items indicating different levels of severity in activity limitations.…”

Selecting, assessing and interpreting measures of function for patients with severe hip pathology: The need for caution

“…These characteristics can influence the actual level of functional ability and how function is perceived and reported [3,[7][8][9][10]: For example, obesity and bone structure can affect the accuracy of clinical measures [11], and age and vulnerability can influence communication with interviewers [12].…”