D. Felson, R. Lawrence, P. Dieppe, R. Hirsch, C. Helmick et al., Osteoarthritis: New Insights. Part 1: The Disease and Its Risk Factors, Annals of Internal Medicine, vol.133, issue.8, pp.133635-646, 2000.
DOI : 10.7326/0003-4819-133-8-200010170-00016

O. Ethgen, O. Bruyere, R. F. Dardennes, C. Reginster, and J. , Health-related quality of life in total hip and total knee arthroplasty. A qualitative and systematic review of the literature, J Bone Joint Surg Am, issue.5, pp.86-963, 2004.

R. Bourne, B. Chesworth, A. Davis, N. Mahomed, and K. Charron, Patient Satisfaction after Total Knee Arthroplasty: Who is Satisfied and Who is Not?, Clinical Orthopaedics and Related Research??, vol.90, issue.Suppl 1, pp.57-63, 2010.
DOI : 10.1007/s11999-009-1119-9

R. Kane, K. Saleh, T. Wilt, B. Bershadsky, W. Cross et al., Rutks I: Total knee replacement, Evid Rep Technol Assess, vol.86, pp.1-8, 2003.

I. De-groot, H. Bussmann, H. Stam, and J. Verhaar, Small Increase of Actual Physical Activity 6??Months After Total Hip or Knee Arthroplasty, Clinical Orthopaedics and Related Research, vol.83, issue.9, pp.2201-2208, 2008.
DOI : 10.1007/s11999-008-0315-3

M. Brandes, M. Ringling, C. Winter, A. Hillmann, and D. Rosenbaum, Changes in physical activity and health-related quality of life during the first year after total knee arthroplasty, Arthritis Care & Research, vol.63, issue.3, pp.328-334, 2011.
DOI : 10.1002/acr.20384

T. Schmalzried, E. Szuszczewicz, M. Northfield, K. Akizuki, R. Frankel et al., Quantitative Assessment of Walking Activity after Total Hip or Knee Replacement*, The Journal of Bone & Joint Surgery, vol.80, issue.1, pp.54-59, 1998.
DOI : 10.2106/00004623-199801000-00010

L. Forsen, N. Loland, A. Vuillemin, M. Chinapaw, M. Van-poppel et al., TerweeCB:Self-administered physical activity questionnaires for the elderly: a systematic review of measurement properties, Sports Med, issue.7, pp.40601-623, 2010.

G. Plasqui and K. Westerterp, Physical Activity Assessment With Accelerometers: An Evaluation Against Doubly Labeled Water**, Obesity, vol.58, issue.10, pp.2371-2379, 2007.
DOI : 10.1038/oby.2007.281

B. Ainsworth, How do I measure physical activity in my patients? Questionnaires and objective methods, British Journal of Sports Medicine, vol.43, issue.1, pp.6-9, 2009.
DOI : 10.1136/bjsm.2008.052449

C. Terwee, L. Mokkink, M. Van-poppel, M. Chinapaw, W. Van-mechelen et al., Qualitative Attributes and Measurement Properties of Physical Activity Questionnaires, Sports Medicine, vol.19, issue.3, pp.525-537, 2010.
DOI : 10.2165/11531370-000000000-00000

C. Terwee, W. Bouwmeester, S. Van-elsland, H. De-vet, and J. Dekker, Instruments to assess physical activity in patients with osteoarthritis of the hip or knee: a systematic review of measurement properties, Osteoarthritis and Cartilage, vol.19, issue.6, pp.620-633, 2011.
DOI : 10.1016/j.joca.2011.01.002

R. Washburn, K. Smith, A. Jette, and C. Janney, The physical activity scale for the elderly (PASE): Development and evaluation, Journal of Clinical Epidemiology, vol.46, issue.2, pp.153-162, 1993.
DOI : 10.1016/0895-4356(93)90053-4

M. Dinger, R. Oman, E. Taylor, and S. Vesely, Able J: Stability and convergent validity of the Physical Activity Scale for the Elderly (PASE), J Sports Med Phys Fitness, vol.44, issue.2, pp.186-192, 2004.

A. Hagiwara, N. Ito, K. Sawai, and K. Kazuma, Validity and reliability of the Physical Activity Scale for the Elderly (PASE) in Japanese elderly people, Geriatrics & Gerontology International, vol.33, issue.4, pp.143-151, 2008.
DOI : 10.1111/j.1447-0594.2008.00463.x

N. Harada, V. Chiu, A. King, and A. Stewart, An evaluation of three self-report physical activity instruments for older adults, Medicine and Science in Sports and Exercise, vol.33, issue.6, pp.962-970, 2001.
DOI : 10.1097/00005768-200106000-00016

K. Martin, W. Rejeski, M. Miller, M. James, W. Ettinger et al., Validation of the PASE in older adults with knee pain and physical disability, Medicine & Science in Sports & Exercise, vol.31, issue.5, pp.31627-633, 1999.
DOI : 10.1097/00005768-199905000-00001

A. Schuit, E. Schouten, K. Westerterp, and W. Saris, Validity of the physical activity scale for the elderly (PASE): According to energy expenditure assessed by the doubly labeled water method, Journal of Clinical Epidemiology, vol.50, issue.5, pp.541-546, 1997.
DOI : 10.1016/S0895-4356(97)00010-3

I. Svege, E. Kolle, and M. Risberg, Reliability and validity of the Physical Activity Scale for the Elderly (PASE) in patients with hip osteoarthritis, BMC Musculoskeletal Disorders, vol.32, issue.1, p.26, 2012.
DOI : 10.3109/09638281003775501

R. Washburn and J. Ficker, The Physical Activity Scale for the Elderly (PASE), Journal of Clinical Epidemiology, vol.52, issue.7, pp.336-340, 1999.
DOI : 10.1016/S0895-4356(99)00049-9

N. Bellamy, W. Buchanan, C. Goldsmith, J. Campbell, and L. Stitt, Validation study of WOMAC: a health status instrument for measuring clinically important patient relevant outcomes to antirheumatic drug therapy in patients with osteoarthritis of the hip or knee, J Rheumatol, issue.12, pp.151833-1840, 1988.

B. Ainsworth, W. Haskell, S. Herrmann, N. Meckes, D. Bassett et al., Compendium of physical activities: a second update of codes and MET values, Med Sci Sports Exerc, issue.8, pp.2011-431575, 2011.

D. Beaton, C. Bombardier, F. Guillemin, and M. Ferraz, Guidelines for the Process of Cross-Cultural Adaptation of Self-Report Measures, Spine, vol.25, issue.24, pp.3186-3191, 2000.
DOI : 10.1097/00007632-200012150-00014

R. Troiano, D. Berrigan, K. Dodd, L. Masse, T. Tilert et al., Physical Activity in the United States Measured by Accelerometer, Medicine & Science in Sports & Exercise, vol.40, issue.1, pp.181-188, 2008.
DOI : 10.1249/mss.0b013e31815a51b3

S. Trost, K. Mciver, and R. Pate, Conducting Accelerometer-Based Activity Assessments in Field-Based Research, Medicine & Science in Sports & Exercise, vol.37, issue.Supplement, pp.531-543, 2005.
DOI : 10.1249/01.mss.0000185657.86065.98

C. Matthews, K. Chen, P. Freedson, M. Buchowski, B. Beech et al., Amount of Time Spent in Sedentary Behaviors in the United States, 2003-2004, American Journal of Epidemiology, vol.167, issue.7, pp.875-881, 2003.
DOI : 10.1093/aje/kwm390

J. Sasaki, D. John, and P. Freedson, Validation and comparison of ActiGraph activity monitors, Journal of Science and Medicine in Sport, vol.14, issue.5, pp.411-416, 2011.
DOI : 10.1016/j.jsams.2011.04.003

S. Kozey-keadle, A. Libertine, K. Lyden, J. Staudenmayer, and P. Freedson, Validation of Wearable Monitors for Assessing Sedentary Behavior, Medicine & Science in Sports & Exercise, vol.43, issue.8
DOI : 10.1249/MSS.0b013e31820ce174

H. Vet, C. Terwee, D. Knol, and L. Bouter, When to use agreement versus reliability measures, Journal of Clinical Epidemiology, vol.59, issue.10, pp.1033-1039, 2006.
DOI : 10.1016/j.jclinepi.2005.10.015

T. Tsonga, S. Kapetanakis, C. Papadopoulos, J. Papathanasiou, N. Mourgias et al., Evaluation of improvement in quality of life and physical activity after total knee arthroplasty in greek elderly women, Open Orthop J, vol.5, pp.343-347, 2011.

S. Adams, C. Matthews, C. Ebbeling, C. Moore, J. Cunningham et al., The Effect of Social Desirability and Social Approval on Self-Reports of Physical Activity, American Journal of Epidemiology, vol.161, issue.4, pp.389-398, 2005.
DOI : 10.1093/aje/kwi054

J. Sims, F. Smith, A. Duffy, and S. Hilton, The vagaries of self-reports of physical activity: a problem revisited and addressed in a study of exercise promotion in the over 65s in general practice, Family Practice, vol.16, issue.2, pp.152-15730, 1999.
DOI : 10.1093/fampra/16.2.152

G. Norman, K. Wyrwich, and D. Patrick, The mathematical relationship among different forms of responsiveness coefficients, Quality of Life Research, vol.11, issue.5, pp.815-822, 2007.
DOI : 10.1007/s11136-007-9180-x

M. Pols, P. Peeters, H. Kemper, and D. Grobbee, Methodological aspects of physical activity assessment in epidemiological studies, European Journal of Epidemiology, vol.14, issue.1, pp.63-70, 1998.
DOI : 10.1023/A:1007427831179

C. Tudor-locke and A. Myers, Challenges and Opportunities for Measuring Physical Activity in Sedentary Adults, Sports Medicine, vol.37, issue.11, pp.91-100, 2001.
DOI : 10.2165/00007256-200131020-00002

. Terweecb, . Botsd, . Knoldl, . Dekkerj, . Bouterlm et al., Quality criteria were proposed for measurement properties of health status questionnaires, Journal of Clinical Epidemiology, vol.60, issue.1, pp.34-42, 2007.
DOI : 10.1016/j.jclinepi.2006.03.012