B. Ainsworth, W. Haskell, A. Leon, D. Jacobs, . Jr et al., Compendium of Physical Activities: classification of energy costs of human physical activities, Medicine & Science in Sports & Exercise, vol.25, issue.1, pp.71-80, 1993.
DOI : 10.1249/00005768-199301000-00011

A. Snih, S. Graham, J. Ray, L. Samper-ternent, R. Markides et al., Frailty and incidence of activities of daily living disability among older Mexican Americans, Journal of Rehabilitation Medicine, vol.41, issue.11, pp.892-897, 2009.
DOI : 10.2340/16501977-0424

J. Avila-funes, C. Helmer, H. Amieva, P. Barberger-gateau, L. Goff et al., Frailty Among Community-Dwelling Elderly People in France: The Three-City Study, The Journals of Gerontology Series A: Biological Sciences and Medical Sciences, vol.63, issue.10, pp.1089-1096, 2008.
DOI : 10.1093/gerona/63.10.1089

URL : https://hal.archives-ouvertes.fr/inserm-00336493

K. Bandeen-roche, Q. Xue, L. Ferrucci, J. Walston, J. Guralnik et al., Phenotype of Frailty: Characterization in the Women's Health and Aging Studies, The Journals of Gerontology Series A: Biological Sciences and Medical Sciences, vol.61, issue.3, pp.262-266, 2006.
DOI : 10.1093/gerona/61.3.262

C. Boyd, Q. Xue, C. Simpson, J. Guralnik, and L. Fried, Frailty, hospitalization, and progression of disability in a cohort of disabled older women, The American Journal of Medicine, vol.118, issue.11, pp.1225-1231, 2005.
DOI : 10.1016/j.amjmed.2005.01.062

C. Boyd, M. Ricks, L. Fried, J. Guralnik, Q. Xue et al., Functional Decline and Recovery of Activities of Daily Living in Hospitalized, Disabled Older Women: The Women's Health and Aging Study I, Journal of the American Geriatrics Society, vol.37, issue.10, pp.1757-1766, 2009.
DOI : 10.1111/j.1532-5415.2009.02455.x

P. Cawthon, L. Marshall, Y. Michael, T. Dam, K. Ensrud et al., Frailty in Older Men: Prevalence, Progression, and Relationship with Mortality, Journal of the American Geriatrics Society, vol.94, issue.8, pp.1216-1223, 2013.
DOI : 10.1111/j.1532-5415.2007.01259.x

D. Cox, Regression Models and Life-Tables, J R Stat Soc Ser B (Methodol), vol.34, pp.187-220, 1972.
DOI : 10.1007/978-1-4612-4380-9_37

N. De-vries, J. Staal, C. Van-ravensberg, and J. Hobbelen, Outcome instruments to measure frailty: A systematic review, Ageing Research Reviews, vol.10, issue.1, pp.104-114
DOI : 10.1016/j.arr.2010.09.001

K. Ensrud, S. Ewing, B. Taylor, H. Fink, K. Stone et al., Frailty and Risk of Falls, Fracture, and Mortality in Older Women: The Study of Osteoporotic Fractures, The Journals of Gerontology Series A: Biological Sciences and Medical Sciences, vol.62, issue.7, pp.744-751
DOI : 10.1093/gerona/62.7.744

K. Ensrud, S. Ewing, B. Taylor, H. Fink, P. Cawthon et al., Comparison of 2 Frailty Indexes for Prediction of Falls, Disability, Fractures, and Death in Older Women, Archives of Internal Medicine, vol.168, issue.4, pp.382-389, 2008.
DOI : 10.1001/archinternmed.2007.113

M. Faber, R. Bosscher, A. Chin, and P. Van-wieringen, Effects of Exercise Programs on Falls and Mobility in Frail and Pre-Frail Older Adults: A Multicenter Randomized Controlled Trial, Archives of Physical Medicine and Rehabilitation, vol.87, issue.7, pp.885-896, 2006.
DOI : 10.1016/j.apmr.2006.04.005

N. Fairhall, C. Sherrington, S. Kurrle, S. Lord, and I. Cameron, ICF participation restriction is common in frail, community-dwelling older people: an observational cross-sectional study, Physiotherapy, vol.97, issue.1, pp.26-32, 2011.
DOI : 10.1016/j.physio.2010.06.008

A. Folsom, C. Caspersen, H. Taylor, D. Jacobs, . Jr et al., LEISURE TIME PHYSICAL ACTIVITY AND ITS RELATIONSHIP TO CORONARY RISK FACTORS IN A POPULATION-BASED SAMPLE, American Journal of Epidemiology, vol.121, issue.4, pp.570-579, 1985.
DOI : 10.1093/oxfordjournals.aje.a114035

L. Fried, C. Tangen, J. Walston, A. Newman, C. Hirsch et al., Frailty in Older Adults: Evidence for a Phenotype, The Journals of Gerontology Series A: Biological Sciences and Medical Sciences, vol.56, issue.3, pp.146-156
DOI : 10.1093/gerona/56.3.M146

F. Harrell, . Jr, K. Lee, and D. Mark, MULTIVARIABLE PROGNOSTIC MODELS: ISSUES IN DEVELOPING MODELS, EVALUATING ASSUMPTIONS AND ADEQUACY, AND MEASURING AND REDUCING ERRORS, Statistics in Medicine, vol.15, issue.4, pp.361-387, 1996.
DOI : 10.1002/(SICI)1097-0258(19960229)15:4<361::AID-SIM168>3.0.CO;2-4

E. Kaplan and P. Meier, Nonparametric Estimation from Incomplete Observations, Journal of the American Statistical Association, vol.37, issue.282, pp.457-481, 1958.
DOI : 10.1214/aoms/1177731566

A. Kenny, R. Boxer, A. Kleppinger, J. Brindisi, R. Feinn et al., Dehydroepiandrosterone Combined with Exercise Improves Muscle Strength and Physical Function in Frail Older Women, Journal of the American Geriatrics Society, vol.1, issue.9, pp.1707-1714, 2010.
DOI : 10.1111/j.1532-5415.2010.03019.x

D. Kiely, L. Cupples, and L. Lipsitz, Validation and Comparison of Two Frailty Indexes: The MOBILIZE Boston Study, Journal of the American Geriatrics Society, vol.56, issue.9, pp.1532-1539, 2009.
DOI : 10.1111/j.1532-5415.2009.02394.x

A. Kulminski, S. Ukraintseva, I. Kulminskaya, K. Arbeev, K. Land et al., Cumulative Deficits Better Characterize Susceptibility to Death in Elderly People than Phenotypic Frailty: Lessons from the Cardiovascular Health Study, Journal of the American Geriatrics Society, vol.20, issue.5, pp.898-903, 2008.
DOI : 10.1111/j.1532-5415.2008.01656.x

M. Marmot and E. Brunner, Cohort Profile: The Whitehall II study, International Journal of Epidemiology, vol.34, issue.2, pp.251-256, 2005.
DOI : 10.1093/ije/dyh372

R. Newson, Comparing the predictive power of survival models using Harrell's c or Sommers' D, Stata J, vol.10, pp.339-358, 2010.

M. Peterson, R. Sloane, H. Cohen, G. Crowley, C. Pieper et al., Effect of Telephone Exercise Counseling on Frailty in Older Veterans: Project LIFE, American Journal of Men's Health, vol.28, issue.8, pp.326-334, 2007.
DOI : 10.1177/1557988307306153

R. Peto and J. Peto, Asymptotically Efficient Rank Invariant Test Procedures, Journal of the Royal Statistical Society. Series A (General), vol.135, issue.2, pp.185-207, 1972.
DOI : 10.2307/2344317

L. Radloff, The CES-D Scale: A Self-Report Depression Scale for Research in the General Population, Applied Psychological Measurement, vol.1, issue.3, pp.385-401, 1977.
DOI : 10.1177/014662167700100306

S. Rochat, R. Cumming, F. Blyth, H. Creasey, D. Handelsman et al., Frailty and use of health and community services by community-dwelling older men: the Concord Health and Ageing in Men Project, Age and Ageing, vol.39, issue.2, pp.228-233, 2010.
DOI : 10.1093/ageing/afp257

K. Rockwood, What would make a definition of frailty successful?, Age and Ageing, vol.34, issue.5, pp.432-434, 2005.
DOI : 10.1093/ageing/afi146

R. Romero-ortuno, C. Walsh, B. Lawlor, and R. Kenny, A Frailty Instrument for primary care: findings from the Survey of Health, Ageing and Retirement in Europe (SHARE), BMC Geriatrics, vol.2, issue.4, p.57, 2010.
DOI : 10.1186/1471-2318-2-1

M. Rothman, L. Leo-summers, and T. Gill, Prognostic Significance of Potential Frailty Criteria, Journal of the American Geriatrics Society, vol.20, issue.12, pp.2211-2216, 2008.
DOI : 10.1111/j.1532-5415.2008.02008.x

L. Seematter-bagnoud, B. Santos-eggimann, S. Rochat, E. Martin, A. Karmaniola et al., Vulnerability in high-functioning persons aged 65 to 70 years: the importance of the fear factor, Aging Clinical and Experimental Research, vol.54, issue.3, pp.212-218, 2010.
DOI : 10.1007/BF03324799

A. Singh-manoux, M. Hillsdon, E. Brunner, and M. Marmot, Effects of Physical Activity on Cognitive Functioning in Middle Age: Evidence From the Whitehall II Prospective Cohort Study, American Journal of Public Health, vol.95, issue.12, pp.2252-2258, 2005.
DOI : 10.2105/AJPH.2004.055574

URL : https://hal.archives-ouvertes.fr/inserm-01155214

U. Srinivas-shankar, S. Roberts, M. Connolly, O. Connell, M. Adams et al., Effects of Testosterone on Muscle Strength, Physical Function, Body Composition, and Quality of Life in Intermediate-Frail and Frail Elderly Men: A Randomized, Double-Blind, Placebo-Controlled Study, The Journal of Clinical Endocrinology & Metabolism, vol.95, issue.2, pp.639-650, 2010.
DOI : 10.1210/jc.2009-1251

S. Sternberg, S. Wershof, S. Karunananthan, H. Bergman, and A. Clarfield, The Identification of Frailty: A Systematic Literature Review, Journal of the American Geriatrics Society, vol.54, issue.Suppl 2, pp.2129-2138, 2011.
DOI : 10.1111/j.1532-5415.2011.03597.x

E. Tan, G. Rebok, Q. Yu, C. Frangakis, M. Carlson et al., The longterm relationship between high-intensity volunteering and physical activity in older African American women, J Gerontol B Psychol Sci Soc Sci, vol.64, pp.304-311, 2009.

C. Wong, D. Weiss, N. Sourial, S. Karunananthan, J. Quail et al., Frailty and its association with disability and comorbidity in a community-dwelling sample of seniors in Montreal: a cross-sectional study, Aging Clinical and Experimental Research, vol.59, issue.1, pp.54-62, 2010.
DOI : 10.1007/BF03324816

N. Woods, A. Lacroix, S. Gray, A. Aragaki, B. Cochrane et al., Frailty: emergence and consequences in women aged 65 and older in the Women's Health Initiative Observational Study, Women's Health Initiative J Am Geriatr Soc, vol.53, pp.1321-1330, 2005.