Efeito crônico do treinamento de alongamento associado à restrição do fluxo sanguíneo (RFS) antes e durante o exercício na flexibilidade de indivíduos destreinados

• Ano de defesa: 2019
• Autor(a) principal: Alves, Allisson Amâncio de Aquino
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal da Paraíba; Brasil; Medicina; Programa Associado de Pós Graduação em Educação Física (UPE/UFPB); UFPB
• Palavras-chave em Português: Exercícios de alongamento muscular; Amplitude de movimento articular; Desempenho humano; Restrição de fluxo sanguíneo; Oclusão terapêutica; Muscle stretching exercises; Amplitude of articular motion; Human performance; Restriction of blood flow; Therapeutic occlusion; CNPQ::CIENCIAS DA SAUDE::EDUCACAO FISICA
• Link de acesso: https://repositorio.ufpb.br/jspui/handle/123456789/18963

Introduction: The main strategies of physical training, primarily for the performance and improvement of physical abilities, are studied in the space of high performance sports or recreation, and are selected for physical exercises with restriction of blood flow restriction (BFR). Objective: To analyze the chronic effect of stretching associated with an BFR before and during exercise in the flexibility of untrained individuals. Materials and methods: experimental study, sample n = 24 adult men, untrained, 23.6 ± 3.51 years, randomly grouped into 3 groups: G1 - Blood Flow Restriction Group (GBFR), performed stretching, associated with RFS throughout the protocol; G2 - Preconditioning Ischemia Group (GPIC), performed before the stretches Preconditioning Ischemia at 60% of RFS; and G3 - Control Group (GCON) performed the stretches without BFR. The stretching protocol was the same for all groups with specific joint movements and followed the recommendations of the American College of Sports Medicine (ACSM): 3 weekly sessions and 3 sets of 60 seconds of active stretching for 6 weeks. The amplitudes of movement (ROM) before and after 2, 4 and 6 weeks of dorsiflexion of the ankle (DFA) were evaluated; Ankle Plantar Flexion (APF); Hip Flexion with Extended Knee (HFEK); Hip Flexion with Flexed Knee (HFFK); Trunk flexion (TF). Statistical Package for the Social Science (SPSS - 20.0) was used to analyse the data. The test used was ANOVA of repeated measures, with post hoc of Bonferroni, adopting a P≤0.05. The effect size and percent change Δ% were used to verify the magnitude of the changes. Results: In the pre and post-intervention groups, there were significant improvements. In the DFA, all groups significantly increased flexibility, and GBFR obtained the highest variation (GBFR P = 0.001, Δ = 78.5%, GPIC P = 0.001 Δ = 39.3%, GCON P = 0.001 Δ = 71.0 %). For the APF, there were no significant pre and post-intervention differences, such as greater variation for GPIC (GBFR P = 0.119, Δ = 8.3%, GPIC P = 0.100 Δ = 9.0%, GCON P = 1.00 Δ = 2.3%). For the HFEK, all groups increased significantly pre and post intervention, with greater variation for GPIC (GBFR P = 0.001, Δ = 11.7%, GPIC P = 0.001 Δ = 13.8%, GCON P = 0.001 Δ = 12, 5%). For the HFFK only the GBFR and GCON groups increased significantly with a greater percentage variation for GBFR (GBFR P = 0.009, Δ = 4.5%, GCON P = 0.001 Δ = 4.3%), GPIC did not show significant increases GPIC P = 0.063, Δ = 3.6%). For TF, all groups increased significantly with greater variation for GPIC (GBFR P = 0.037, Δ = 18.6%, GPIC P = 0.001 Δ = 48.1%, GCON P = 0.020 Δ = 21.9%). There were no significant differences between groups in any of the movements (P = 0.718) for DFA; (P = 0.727) APF; (P = 0.392) FQJE; (P = 0.908) FQJF; and (P = 0.067) for (FT). Conclusion: Stretching training associated with BFR, before and during exercise, increased levels of flexibility in untrained individuals.