During aging, the changes in the pelvic floor structures can lead to urinary incontinence. The urinary incontinence affects about 22.2% of women aged 60-74 years and 38.6% of women over 75 years. Deficits in pelvic muscles can alter the urogenital and postural function. Objective: To compare the electrical activity of the muscles of the lumbar and pelvic floor (MAP) and the lumbar posture between continents young and elderly women during functional activities such as stand up, hold a load and squat with and without load. Methods: Will be evaluated 30 female subjects, equally divided into two groups of 15 subjects, according to their age (young people 18-35 years and elderly over 60 years). Exclusion criteria are: back pain in the last 12 months, urinary loss complaint. A electromyographic system will be used for lumbar and abdominal muscles (Trigno Wireless®, DelSys®, Boston, USA), another electromyographic system for the pelvic floor muscles (Thought Technology Ltd, Canada) and inclinometer (LoggerTecknologi HB, Åkarp, Sweden) for the posture and movements recordings. Assumptions: Muscle activity and lumbar posture will perform decreased in old women in relation to young women. Relevance: This study is relevant in identifying muscle activation patterns associated with aging.
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