Food bioactive compounds (FBC) comprise a vast class of substances, including polyphenols, with different chemical structures, and they exert physiological effects on individuals who consume them, such as antioxidant and anti-inflammatory action. The primary food sources of the compounds are fruits, vegetables, wines, teas, seasonings, and spices, and there are still no daily recommendations for their intake. Depending on the intensity and volume, physical exercise can stimulate oxidative stress and muscle inflammation to generate muscle recovery. However, little is known about the role that polyphenols may have in the process of injury, inflammation, and muscle regeneration. This review aimed to relate the effects of supplementation with mentation with some polyphenols in oxidative stress and post-exercise inflammatory markers. The consulted papers suggest that supplementation with 74 to 900 mg of cocoa, 250 to 1000 mg of green tea extract for around 4 weeks, and 90 mg for up to 5 days of curcumin can attenuate cell damage and inflammation of stress markers of oxidative stress during and after exercise. However, regarding anthocyanins, quercetins, and resveratrol, the results are conflicting. Based on these findings, the new reflection that was made is the possible impact of supplementation associating several FBCs simultaneously. Finally, the benefits discussed here do not consider the existing divergences in the literature. Some contradictions are inherent in the few studies carried out so far. Methodological limitations, such as supplementation time, doses used, forms of supplementation, different exercise protocols, and collection times, create barriers to knowledge consolidation and must be overcome.

Here we demonstrated that a single resistance exercise session causes muscle damage, delayed onset muscle soreness (DOMS), higher creatine kinase (CK) and lactate dehydrogenase (LDH) activity, and increased IL-6 concentration without changes in muscle strength. Sixteen healthy untrained subjects performed five exercises consisting of three sets of 10 maximum repetitions for each exercise and 1 minute rest period between sets and exercises. Blood samples were taken after 30 minutes, 24, 48 and 72 hours and before exercise. Muscular performance was assessed by maximum isometric strength (MIS) before, 24h, 48h and 72h exercise session. We have concluded that the single resistance exercise session, performed on this study, led to muscle damage and this variable cannot be evaluated through maximal isometric strength. Among those markers, CK was more sensitive to muscle damage. This information might be important for adequate recovery between training sessions.

Introdução: A cafeína (CAF) é um recurso ergogênico nutricional comumente utilizado durante a prática do exercício físico com o intuito de potencializar o desempenho físico. Não apresenta efeitos agudos adversos, tem baixo custo, facilmente acessível e socialmente aceita. São atribuídos a CAF mecanismos de ação centrais e periféricos durante a prática do exercício físico. Objetivo: O presente estudo tem como objetivo elucidar as atuais evidências sobre os mecanismos de ação da CAF e a melhora do desempenho físico. Métodos: Foram selecionados artigos de revisão sistemática com e sem metanálise e ensaios clínicos sobre suplementação de cafeína e exercício físico. Conclusão: A suplementação com CAF promove melhora do desempenho físico, principalmente em modalidades de endurance, e essa melhora no desempenho é devido aos mecanismos de ação da CAF no sistema nervoso central.Palavras-chave: recursos ergogênicos, suplementação alimentar, exercício.