Treino de força e HIIT na flexibilidade metabólica em adultos com fatores de risco cardiovascular
DOI:
https://doi.org/10.47197/retos.v79.117940Palavras-chave:
Risco cardiovascular, oxidação de gorduras, HIIT, flexibilidade metabólica, treino de resistênciaResumo
Introdução: A inflexibilidade metabólica é uma característica marcante das doenças cardiometabólicas, caracterizada pela seleção deficiente dos substratos mitocondriais.
Objectivo: Avaliar os potenciais efeitos de oito semanas de treino de resistência (TR) e de treino intervalado de alta intensidade (HIIT) na taxa metabólica e na composição corporal em indivíduos com factores de risco cardiovascular (FRCV).
Resultados: Após a intervenção, ambos os grupos apresentaram alterações nas medidas de flexibilidade metabólica: o quociente respiratório diminuiu (EF: Δ=-0,100 [IC 95% -0,179, -0,021]; HIIT: Δ=-0,038 [IC 95% -0,060, -0,017]), a oxidação de gordura aumentou (EF: Δ=19,0 g/d [IC 95% 1,9, 36,1]; HIIT: Δ=13,0 g/d [IC 95% 1,6, 24,4]) e o gasto energético derivado dos lípidos aumentou (EF: Δ=7,57 kcal/h [IC 95% 0,76, 14,39]; HIIT: Δ=4,83 kcal/h [IC 95% 0,72, 8,95]), com as estimativas a sugerirem efeitos favoráveis. O grupo do Exercício (EE) apresentou uma ligeira melhoria. na flexibilidade metabólica (ΔΔ = -0,062 [IC 95% -0,141, 0,018], g = -0,89 para o RER). As alterações na composição corporal foram modestas em ambos os grupos.
Discussão: Estes resultados sugerem que tanto o exercício físico (EF) como o treino intervalado de alta intensidade (HIIT) são estratégias que podem melhorar a flexibilidade metabólica em indivíduos com risco cardiovascular, independentemente de alterações substanciais na composição corporal.
Conclusões: Ambas as modalidades representam potenciais ferramentas terapêuticas para combater a inflexibilidade metabólica, embora sejam necessários estudos de maior dimensão para obter evidências conclusivas sobre possíveis diferenças entre elas.
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Direitos de Autor (c) 2026 Carolina Núñez-Vergara, Marcela Rojas-Vargas, Sebastián Báez Vargas, Sergio Martinez-Huenchullán, Johnattan Cano Montoya
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