enquête (1) Amérique du Nord (1) indicateur (1) analyse (1) santé (1) Europe (1) éducation (1) âge (1) Amérique du Nord (1) Europe (1) Education (1) Retirement (1) Aging (1) Age factors (1) Methods (1) Phenotype (1) Retirement (1) Proportion (1) Physical fitness (1) Old age (1) North America (1) Muscles (1) Manufacturers' agents (1) Human beings (1) Health surveys (1) Health status indicators (1) Health (1) People with disabilities (1) Fatigue (1) Exercise (1)