Effect of PEP'C-R on Endurance Parameters and Maximal Cardio-respiratory Function Among Sedentary Older Seniors Over 70

Inclusion Criteria: * Low physical activity determined using the questionnaire IPAQ in METs (\<3). * Informed about the results of examinations performed at screening visit. * Subject able to understand the purpose, procedures and risks of the study and give written informed consent. Exclusion Criteria: * Contraindications to perform the cardiac stress test and PEP'C-R (Musculoskeletal limitations, Unstabilized heart Failure with chest pain on exertion under maximal medical therapy, ventricular and supraventricular disorders, Acute coronary syndrome within \<1 month, Unstabilized respiratory failure or oxygen-dependent) * Abnormality shown at the cardiac stress test : clinical abnormality (chest pain), electric abnormality (found on ECG), abnormal blood pressure, abnormality of the ventilatory system (bronchospasm, hypoxemia,...) * Cognitive impairment which exclude PEP'C-R training. * Current Cancer chemotherapy. * Visual Impairment which exclude PEP'C-R training. * Presence of fibromyalgia. * Subject treated with beta-blockers and other negative chronotropic molecules. * Acute infection at the time of inclusion. * Dependent patient.