Treinamento de força com restrição de fluxo sanguíneo: uma abordagem imunológica e psicobiológica sobre a pressão da braçadeira.

• Autor(a) principal: Lima, Fabio Rocha de
• Data de Publicação: 2018
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Repositório do Centro Universitário Braz Cubas
• Texto Completo: https://repositorio.cruzeirodosul.edu.br/handle/123456789/281
• topic: Kaatsu-training; Neutrófilos; Linfócitos; Plasma; Psicobiologia; CNPQ::CIENCIAS DA SAUDE

Strength training with blood flow restriction (STBFR) has been pointed out as an effective method to promote hypertrophy and increase strength. However, there is no need for studies to discuss how manipulation of cuff pressure can influence oxidative stress and apoptosis of circulating lymphocytes and neutrophils. Objective: To verify the acute and chronic effect of TFRFS at different pressures on circulating lymphocyte and neutrophil apoptosis, plasma oxidative stress and on psychobiological parameters. Materials and methods: Twenty-seven male subjects (20-25 years old) were recruited, who were randomly divided into three groups: Group without restriction (SR); Group with partial restriction (RP); Group with total restriction (RT). The intensity for the SR group was 75% of 1RM, and 20% of 1RM for RP and RT, differing only in the cuff pressure. A bilateral elbow flexion exercise was used, and the sessions occurred 3 times a week for 10 weeks. Results: The mitochondrial neutrophil membrane potential decreased after exercise in the three groups, whereas in lymphocytes decreased only in the SR group. The caspase-3 activity of neutrophils increased in the SR and RT groups, whereas in lymphocytes it increased only in the SR group. The iron reduction test (FRAP) and reduced glutathione (GSH) decreased only in the SR and RT groups. Oxidated glutathione (GSSG), carbonylated protein and thiobarbituric acid reaction (TBARS) increased in the SR and RT groups. The RP group had the highest effort values when compared to the SR group and the RT group. For the pain level, the group RP and RT presented the highest values when compared to the SR group. The level of discomfort was higher in the RT group when compared to the RP and SR group. In the mood state, the tension levels reduced significantly after exercise in the SR and RT groups. For depression, the SR group presented the highest values before and after exercise when compared to the two moments (before and after) of the SR group. For rabies, there was a significant reduction after exercise in the SR group. Pre and post exercise strength values were higher in the PR group when compared to SR and RT groups. Fatigue scores were higher at the pre- and post-exercise moments in the SR and RT groups when compared to the PR group. Conclusion: It can be concluded that TFRFS with total restriction promotes apoptosis of neutrophils, but not lymphocytes. Pressure manipulation of the cuff can further influence oxidative stress, both acute and chronic. Psychobiological variables indicate that the blood flow restriction strategy may be efficient to increase adherence to exercise, but that pressure should be selected with caution, since higher pressures interfere with important variables to determine the continuity of exercise.