• Bruna Cunha Mendes, Cândice Laís Knöner Copetti, PanzaVilma Simões PereiraVSPNutrition Postgraduate Program, Federal University of Santa Catarina, Florianopolis, Santa Catarina, Brazil., Lucas B R Orssatto, Julia Salvan da Rosa, Fernando Diefenthaeler, Eduardo Monguilhott Dalmarco, Patricia Faria Di Pietro, and Débora Kurrle Rieger.
• Nutrition Postgraduate Program, Federal University of Santa Catarina, Florianopolis, Santa Catarina, Brazil. Electronic address: bruna.mendes@posgrad.ufsc.br.
• Nutrition. 2021 Nov 1; 91-92: 111344.

ObjectiveHigh-intensity intermittent exercise (HIIE) may enhance the antiinflammatory status. The juçara fruit juice (JFJ) has well-established antioxidant and antiinflammatory properties. This study investigated the effect of JFJ consumption on the inflammatory response to HIIE in physically active subjects.MethodsIn a randomized crossover design, 15 men were assigned to drink 250 mL of either JFJ or water (control) 1 h before a cycling HIIE session (seven sets of 60 s at 100% peak power output; 75 s recovery between sets). Blood samples were obtained before and at 0, 30, and 60 min post-HIIE, and the serum was analyzed for interleukin (IL)-6, IL-1β, IL-8, IL-10, tumor necrosis factor-α, and cortisol.ResultsAfter HIIE, the IL-6 levels were higher than baseline (percent change) at 30 min (P = 0.041) and 60 min (P = 0.038) for the control, but were unaffected by JFJ. IL-10 was higher in the JFJ group than in the control at 30 min (d = ‒0.63). Tumor necrosis factor-α was lower than baseline at 30 min for the control (d = ‒0.71) and at 60 min for the JFJ group (d = ‒0.60). For control, cortisol increased to higher than the baseline at 30 and 60 min (d = 0.54 and d = 0.76, respectively). For the JFJ group, the cortisol levels were significantly higher than the baseline at 30 min (P = 0.022). Performance during sprints was higher in the JFJ group than in the control (P = 0.002). In the control group, performance was with both IL-6 (semipartial correlation; sr = -0.59, large effect size) and cortisol at 0 h (sr = -0.52, large effect size).ConclusionsJFJ intake attenuated the antiinflammatory response to HIIE, possibly resulting from a lower degree of muscle stress.Copyright © 2021 Elsevier Inc. All rights reserved.

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