angles. The American Thoracic Society Quality of Life Resource defines it to be an
individual's ability to perform normal daily activities to meet basic needs to fulfill usual
domestic and social roles (Leidy, N.K., 1994) and maintain health and well-being
appropriate for age that subsumes into functional capacity and functional performance
(Wilson, I.B., Cleary, P.D., 1995).
Functional Performance: Functional performance, hence, is related to physical
activities of daily living, simply assessed by self-report. Functional status can be
influenced by biological and physiological impairment, symptoms, mood, and other
factors like socioeconomic parameters. It is likely to be modified by the patient's health
perceptions, for example, a person who thinks himself ill will have a poor functional
status as measured by performance.
Functional status is an aspect of health, and it is, in turn an aspect of useful, active
life, and that becomes a problematic area in the elderly or geriatric age group.
WONCA: In the perception of the World Organization of General Practice and
Family Physicians (WONCA), it represents actual performance level or capacity to
perform both in the sense of self-care or being able to fulfill a task or role at a given
moment during a given period. The WONCA classification committee defines function as
the ability of an individual to cope with and adapt to the changing elements in his or her
individual environment and to perform certain tasks, like grooming, transferring,
ambulating, bathing, and dressing to a measurable degree (WONCA Classification
CICD: The Center to Improve Care of the Dying simply expresses this
concept to be the...
Laviolette, Melissa A. Bernstein, David Kaliton, Carmen Castaneda, Charles T. Pu, Jeffrey M. Hausdorff, Roger A. Fielding and Maria A. Fiatarone Singh,, Association of Muscle Power With Functional Status in Community-Dwelling Elderly Women, The Journals of Gerontology Series A: Biological Sciences and Medical Sciences 55:M192-M199 (2000).
Tomonari OKADA, Toshiyuki NAKAO (1998), Physical Functional Status And Factors Contributing To Disability In Japanese Chronic Dialysis Patients, Nephrology 4 (3), 195-203, doi:10.1046/j.1440-1797.1998.d01-27.x
Valderrama, E., Gama, J Damian, J Perez del Molino, M Lopez, M Perez, and F Iglesias, Short Report. Association Of Individual Activities Of Daily Living With Self-Rated Health In Older People, Age Ageing, May 2000; 29: 267 - 270.