Effects of Resistance Training Programes At Different Intensities on Musculoskeletal, Metabolic, Lipid, Immunological, Inflammatory, Well-being and Functional Parameters in Older Adults.

Inclusion Criteria: * Age \> 60 years * Physically independent (able to walk 100 m without a walking aid and climb 10 steps without rest) * On the registration waiting list for physical activity at their respective Municipal Activity Centers for Older People (MACOP). * Sedentary lifestyle (less than one hour of physical activity or exercise a week during the previous six months). * Medical certificate of suitability or fitness to practice resistance training activities. * No plans to leave the area during the intervention. * Cognitive ability to understand and follow the instructions and sign the informed consent form. * Free of any antioxidant supplements for at least six weeks before the start of this study. Exclusion Criteria: * Presence of cardiovascular, musculoskeletal, renal, liver, pulmonary, or neuromuscular and neurological disorders that would prevent the participant from performing the exercises. * Current or prior (past six months) use of hormone replacement therapy. * Body weight changes \> 10% in the previous year. * Intake of prescription medications or supplements (e.g., vitamins C, E) that were expected to alter the results of the study (ergogenic, dietary aids, estrogen, beta-blockers, steroid hormones, calcitonin, corticosteroids, glucocorticoids, thiazide diuretics, anticonvulsants, bisphosphonates, raloxifene). * A history of malignant neoplasms. * Terminal illness with life expectancy of less than one year. * Engagement in regular strength trai…