References
- National Multiple Sclerosis Society. Multiple sclerosis information sourcebook. Information Resource Center and Library of the National Multiple Sclerosis Society, New York, NY 2003
- Motl R W, Snook E, McAuley E. Physical activity and its correlates among people with multiple sclerosis: Literature review and future directions. Progress in multiple sclerosis research, F Columbus. Nova Science Publishers, Hauppauge, NY 2005
- Busse M E, Pearson O R, Van Deursen R, Wiles C M. Quantified measurement of activity provides insight into motor function and recovery in neurological disease. Journal of Neurology, Neurosurgery, and Psychiatry 2004; 75: 884–888
- Ng A V, Kent-Braun J A. Quantification of lower physical activity in persons with multiple sclerosis. Medicine and Science in Sports and Exercise 1997; 29: 517–523
- Stuifbergen A K, Roberts G J. Health promotion practices of women with multiple sclerosis. Archives of Physical Medicine and Rehabilitation 1997; 78(Suppl)S3–S9
- Vercoulen J HMM, Bazelmans E, Swanink C MA, Fennis J FM, Galama J MD, Jongen P JH, Hommes O, Van Der Meer J WM, Bleijenberg G. Physical activity in chronic fatigue syndrome: Assessment and its role in fatigue. Journal of Psychiatric Research 1997; 31: 661–673
- Dishman R K, Washburn R A, Schoeller D A. Measurement of physical activity. Quest 2001; 53: 295–309
- Tudor-Locke C E, Myers A M. Challenges and opportunities for measuring physical activity in sedentary adults. Sports Medicine 2001; 31: 91–100
- Romberg A, Virtanen A, Aunola S, Karppi S-L, Karanko H, Ruutiainen J. Exercise capacity, disability and leisure physical activity of subjects with multiple sclerosis. Multiple Sclerosis 2004; 10: 212–218
- Pearson O R, Busse M E, Van Deursen R WM, Wiles C M. Quantification of walking mobility in neurological disorders. Quarterly Journal of Medicine 2004; 97: 463–475
- Slawta J N, Wilcox A R, McCubbin J A, Nalle D J, Fox S D, Anderson G. Health behaviors, body composition, and coronary heart disease risk in women with multiple sclerosis. Archives of Physical Medicine and Rehabilitation 2003; 84: 1823–1830
- Campbell D T, Fiske D W. Convergent and discriminant validation by the multitrait-multimethod matrix. Psychological Bulletin 1959; 56: 81–105
- Cronbach L J, Meehl P E. Contruct validation in psychological tests. Psychological Bulletin 1955; 52: 281–302
- Godin G, Shephard R J. A simple method to assess exercise behavior in the community. Canadian Journal of Applied Sport Science 1985; 10: 141–146
- Sallis J F, Haskell W L, Wood P D, Fortmann S P, Rogers T, Blair S N, Paffenbarger R S, Jr. Physical activity assessment methodology in the Five-City Project. American Journal of Epidemiology 1985; 121: 91–106
- Thomas S, Reading J, Shephard R J. Revision of the Physical Activity Readiness Questionnaire. Canadian Journal of Sport Science 1992; 17: 338–345
- Goodin D S. A questionnaire to assess neurological impairment in multiple sclerosis. Multiple Sclerosis 1998; 4: 444–451
- Folstein M F, Folstein S E, McHugh P R. Mini Mental State: A practice method for grading cognitive status of patients for the clinician. Journal of Psychological Research 1975; 12: 189–198
- Cohen J. Statistical power analysis for the behavioral sciences2nd ed. Lawrence Erlbaum, Mahwah, NJ 1988