Navegando por Autor "Morais, Mariana Gomes de"
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Item 10 km running race induces an elevation in the plasma myokine level of nonprofessional runners.(2019) Barbosa, Lucas Soares Marcucci; Martins Junior, Francisco de Assis Dias; Lobo, Lázaro Fernandes; Morais, Mariana Gomes de; Moreira, Janaina Matos; Vieira, Érica Leandro Marciano; Silva, Albená NunesPurpose Acute and chronic physical exercise is believed to have benefcial efects on human health. Exercise is also able to modulate immune function. We hypothesed that exercise is able to induce many benefts for human health by modulating immune functions through the production and release of many myokines. Here, we investigated the efects of a running race on the level of plasmatic myokines. Methods Nine male volunteers took part in this study. Blood samples were obtained before, immediately after and 24 h after the race. Results Participants completed the 10 km running race in 49.85±7.04 min. The levels of IL-6 elevated after exercise (0.94±0.4–2.82±0.3 pg/ml). The IL-15 plasma level was also higher immediately after (0.88±0.25–1.29±0.36 pg/ml), and 24 h after (1.30±1.01 pg/ml), the end of the exercise. Irisin increased only 24 h after exercise (632.60±188.40– 974.70±232.30 pg/ml). FABP3 increased after exercise (829.60±68.93–1306.00±319.10 pg/ml). The plasma levels of BDNF (4719.00±701.80–5557.00±810.30 pg/ml) and Fractalkine increased after exercise (101.2±34.96–134.90±43.62 pg/ ml). The level of FSTL (7265.00±1553.00–9074.00±1662.00 pg/ml) and Osteonectin (16.52±3.54–15.71±3.38 pg/ml) also increased after exercise, and then returned to baseline level 24 h after the end of the session. Conclusion Taken together, these results suggest that a 10 km running race induces elevation of important myokine plasma levels.Item A single bout of fatiguing aerobic exercise induces similar pronounced immunological responses in both sexes.(2022) Lobo, Lázaro Fernandes; Morais, Mariana Gomes de; Barbosa, Lucas Soares Marcucci; Martins Junior, Francisco de Assis Dias; Avelar, Luíza Martino; Vieira, Erica Leandro Marciano; Martins, Felipe José Aidar; Wanner, Samuel Penna; Silva, Lucélia Scarabeli; Noman, Maria Clara; Camargos, Bruno Muzzi; Freitas, Kátia Michelle; Gonçalves, William Antonio; Pinho, Vanessa; Silva, Albená Nunes daIntroduction: Physical exercise can acutely and chronically modulate immunological responses. Women and men have different innate and adaptive immune responses, and in this sense, these two groups may also have different acute immunological responses induced by exercise. In addition, it is essential to understand further whether the effects of physical exercise on the immune system responses depend on sex because limited scientific evidence on this topic is available. This information may allow athletes and coaches to improve the training process, mainly to understand if the physiological impact of given training stimuli in women is similar to that in men. Objective: The present study aimed to investigate the acute effects of continuous submaximal exercise until fatigue on physiological and immunological parameters in amateur female and male runners. Methods: This study included 18 female and 15 male volunteers. Each participant visited the laboratory on four consecutive days. The first visit consisted of medical history taking and explaining the study design. On the second visit, the participants were subjected to an incremental test to determine their maximal rate of oxygen consumption (VO2max) that was required to prescribe the intensity of the submaximal exercise protocol. On the third visit, the fatiguing exercise protocol was performed at 77%–80% of the VO2max. During this submaximal exercise, the heart rate, rating of perceived exertion (RPE), and blood lactate were recorded. Blood samples were collected before, immediately after, and 1 h after the fatiguing protocol to analyze the plasma levels of cytokines and creatine kinase (CK) and to count leukocytes. Finally, on the fourth visit, the participants underwent physical evaluations to measure their body composition using dual-energy X-ray absorptiometry (DXA) imaging. Results: The average ages of the female and male groups were 34.2 ± 3.7 and 30.5 ± 4.3 years old, respectively. The female group ran 57 ± 27 min, while the male group ran 52 ± 15 min before fatiguing. In the female group, when comparing before and after the submaximal exercise, marked increases were observed in the following variables: heart rate (from 68.5 to 180.4 bpm), RPE (from 3.6 to 8.2), lactate (from 2.1 to 4.49 mmol/L), and CK (from 89.5 to 126.3 U/L). In addition, the female group showed an increased number of total leukocytes (from 7222.3 to 11162.9 × 106 /μl), neutrophils (from 4,403 to 6,480 × 106 /μl), and lymphocytes (from 2,342 ± to 3,562 × 106 /μl) from pre- to post-submaximal exercise. In the male group, similar elevations in psychophysiological variables were observed, as evidenced by comparing the heart rate (from 52.8 to 184.1 bpm), RPE (from 0.0 to 8.9), lactate (from 2.7 to 7.2 mmol/L), and CK (from 106.2 to 165 U/L) before and after the submaximal exercise. The male group also showed an augmented number of total leukocytes (from 6,245 to 8,050 × 106 /μl), neutrophils (from 3,335 to 4,128 × 106 /), and lymphocytes (from 2,191 to 3,212 × 106 /μl) when comparing pre- and post-submaximal exercise. There were no differences in the changes between women and men for these parameters. Conclusion: The aerobically fatiguing exercise protocol induced pronounced changes in the heart rate, plasma levels of lactate and CK, total leukocyte count, especially the number of neutrophils and lymphocytes, in both sexes. The fatiguing exercise protocol also changed the plasma levels of IL-6 and IL-10 in the female and male groups. Under the present conditions, the physiological changes induced by fatiguing submaximal exercise, including the immunological changes, were not influenced by sex. This study shows that the same aerobic physical exercise can alter immunological parameters in women and men, and this response is similar between sexes.Item The effects of strength training session with different types of muscle action on white blood cells counting and Th1/Th2 response.(2019) Barbosa, Lucas Soares Marcucci; Martins Junior, Francisco de Assis Dias; Lobo, Lázaro Fernandes; Morais, Mariana Gomes de; Martins, Felipe José Aidar; Vieira, Erica Leandro Marciano; Silva, Albená Nunes daAim This research investigated the effects of a strength training session with two different types of muscle actions, predominantly concentric or eccentric in the physiological variables, including the counting of white blood cells and inflammatory mediators; and consequently, changes in the Th1/Th2 balance. Methods Twelve healthy adult men performed a strength training session, using two different protocols: predominantly concentric with 5 s of the concentric phase by 1 s of the eccentric phase, and a predominantly eccentric with 1 s of the concentric phase by 5 s of the eccentric phase. Blood samples were collected, before, immediately after and 2 h after the end of the session to analyze subpopulations of white blood cells, creatine kinase (CK), irisin and the levels of anti- and pro-inflammatory mediators. Results Both strength training protocols were able to increase the heart rate, lactate concentration, rate of perceived exertion and the levels of circulating creatine kinase. The predominantly concentric strength training exercises increased the number of total white blood cells, and neutrophils 2 h after the end of the session. The plasmatic levels of interleukin-2 (IL-2), interleukin-4 (IL-4), interleukin-6 (IL-6), interleukin-10 (IL-10), tumor necrosis factor-α (TNF-α), interferon-γ (INF-γ), irisin, soluble tumor necrosis factor receptor-1 (sTNFR1) and sTNFR2 did not change after the strength training protocols. Conclusion Therefore, the present study demonstrates that a strength training session is able to disturb the body homeostasis.