Effects of strength training with and without blood flow restriction on quality of life in the elderly

Introduction: Studies reveal the importance of strength in the accomplishment of daily tasks, in the reduction of falls and in the functional capacity of the elderly. Currently, in order to obtain strength gains and muscular hypertrophy, the training intensity prescribed by the literature is between 70% and 85% of 1RM. As an alternative to boosting strength training gains, we have Blood Flow Restriction (BFR) training. Unlike traditional strength training, the loads used in BFR are around 20% to 30% of a maximum repetition (1RM). Objectives: To analyze the effects of forca training with and without restriction of blood flow on quality of life standards in elderly women from the functional capacity test and maximum strength. Materials & Methods: 33 elderly women over 60 years old were selected and divided into two groups: Fist flexion exercise group with BFR and RT (LL-BFR - 40% 1RM) and control group (HL - 70% 1RM). The training was performed twice a week for 14 weeks. Final sample consisted of 16 subjects in the LL-BFR group (Age = 64.69 ± 3.74 years) and 17 group HL (Age = 67.12 ± 4.97). Quality of life was assessed by the validated questionnaire, WHOQOL-BREF. The power, reactive force and maximal strength were respectively evaluated through the sit / stand test in 30 seconds, the reaction time and the 1 RM test (one maximal repetition). Results: The Pearson correlation between Age and Strength (1RM Fist flexion test) is negative with r (r = -, 513) and (p> 0.05) correlation demonstrating that there is a negative and significant linear correlation between age and muscle strength in the elderly. There was also a linear correlation between age and the variables functional capacity. Quality of life improved significantly from pre - test to post - test in both training programs with p