Treinamento de força com restrição de fluxo sanguíneo: alterações metabolicas inflamatórias, composição corporal e desempenho neuromuscular em homens com sobrepeso: estudo randomizado

• Autor(a) principal: Santos, Adeilma Lima dos
• Data de Publicação: 2019
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Biblioteca Digital de Teses e Dissertações da UFPB
• Texto Completo: https://repositorio.ufpb.br/jspui/handle/123456789/16282
• topic: Força muscular; Oclusão vascular; Educação Física e Treinamento; Muscle strength; Vascular occlusion; Physical Education and Training; Treinamento de força muscular; Desempenho neuromuscular - Homens com sobrepeso; Restrição de fluxo sanguíneo; CNPQ::CIENCIAS DA SAUDE::EDUCACAO FISICA

Strength training (ST) has been an important influential factor promoting benefits such as increased strength, production of anti-inflammatory adipokines, increased muscle mass and decreased body fat. However, blood flow restriction ST (BRF) appears as an alternative to high load TF because it is characterized by the use of smaller charges associated with BRF to promote strength gains and hypertrophy similar to conventional ST. Body overweight individuals may benefit from training since they present natural mechanical overloads, causing a decrease in physical performance, and facilitating the adhesion of the appearance of osteoarticular lesions. Thus, the objective was to analyze the effect of strength training with restriction of blood flow on the metabolic parameters, body composition and neuromuscular performance in overweight men.The sample consisted of 18 subjects with age (27.66 ± 3.61 years), body mass index (27.42 ± 1.14), fat percentage (28.38 ± 3.84) and training time ( 2.77 ± 0.73 months). Subjects were randomized to the following groups: low-load strength training at 30% of 1RM (LLST), low-load with blood flow restriction strength training at 30% of 1RM (LLSTBFR), and high-load strength training at 80% of 1RM (HLST). The subjects will perform the first visit regarding body composition assessment, blood tests and the 1RM test, after 48 hours were exposed to three experimental visits weekly to the laboratory with washout of 48hs between them for 8 weeks, shortly after this period of The same analyzes were carried out at the first visit. For the inferential analysis for the main outcomes, we adopted the generalized estimation equations (GEE) model with log binding function and gamma distribution to observe the main effects and interactions. The main findings were: serum levels of leptin and insulin showed a significant decrease in the moments (pre and post) and between the groups LLSTBRF and HLST compared to LLST (p ≤ 0.05), whereas the C reactive protein only decreased in the HLST group in the comparison between the moments (p ≤ 0.05). The lipid profile showed a significant decrease in the serum total cholesterol concentrations for the HLST group (p ≤ 0.05) at the time, triglycerides and high density and low density lipoproteins presented significant alterations in the LLSTRBF and HLST groups in the comparisons between the moments (p ≤ 0.05) and between the LLSTBRF and HLST groups in relation to the LLST. We also observed a significant increase (p ≤ 0.05) in BM of the HLST group between the moments, significant increase (p ≤ 0.05) of BMI in the LLSTBRF and HLST groups between the moments, a significant decrease (p ≤ 0.05) in GBM and % F between LLSTBRF and HLST groups, and a significant increase (p ≤ 0.05) in MCM in both groups, but with a greater magnitude in LLSTBRF and HLST. The muscle strength levels for the LLSTBRF and HLST groups increased significantly (p ≤ 0.05) at moments (pre and post) and in all exercises, except for the leg press. In the comparison between the groups, there was a significant difference (p ≤ 0.05) for the LLSTBRF and HLST groups in relation to the LLST in all the exercises. We conclude that from 8 weeks of training of LLSTBRF and HLST, it is possible to observe effective improvements in inflammatory metabolism, body composition and neuromuscular performance when compared to LLST in overweight conditions.