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1دورية أكاديمية
المؤلفون: Vieira-Souza, Lúcio Marques, Santos, Jymmys Lopes dos, Marçal, Anderson Carlos, Voltarelli, Fabrício Azevedo, Aidar, Felipe José, Miguel-dos-Santos, Rodrigo, Costa, Roas de Araújo, Matos, Dihogo Gama de, Santos, Sandra Lauton, Araújo, Silvan Silva de
المصدر: Motriz: Revista de Educação Física. January 2021 27
مصطلحات موضوعية: physical training, lipid peroxidation, heart, HIIT, swimming
الوصف: Aim: The present study aimed to verify the cardiac oxidative stress biomarker responses to high-intensity interval training (HIIT) in rats. Methods: Sixteen male Wistar rats weighing 250 to 300 g were equally divided into two groups (8 animals/group): sedentary control (SC) and trained group (HIIT). The exercise protocol consisted of high-intensity swimming (14% of body weight, 20 s of activity with 10 s of pause performed 14 times) which was performed for 12 consecutive days. Results: The cardiac tissue concentrations of malondialdehyde and carbonylated proteins showed no significant changes; on the other hand, hydroperoxide levels were higher in the HIIT group than in the SC group. The activities of superoxide dismutase, catalase, and glutathione peroxidase enzymes and the levels of reduced glutathione and sulfhydryl remained unchanged. Conclusion: It is possible to conclude that short-term high-intensity interval training induces changes in the cardiac oxidative stress biomarker but with no effect on the antioxidant enzymes.
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2دورية أكاديمية
المؤلفون: VEGGI, Natalie, VOLTARELLI, Fabrício Azevedo, PEREIRA, Jeann Marcos Nascimento, SILVA, Wanessa Costa, NAVALTA, James Wilfred, CAVENAGHI, Daniela Fernanda Lima de Carvalho, BARROS, Wander Miguel de
المصدر: Food Science and Technology. December 2018 38(1)
مصطلحات موضوعية: high-protein diet bars, functional food, oleaginous
الوصف: The objective of this study was to develop, analyze composition and evaluate the microbiological and sensory characteristics of high-protein diet bars (PB) with the addition of chia grain (Salvia hispanica L.), partially replacing isolated soy protein and concentrated whey protein, in proportions of 0, 10, 15 and 20%. The proximate composition was analyzed of PB, for microbiological quality of Bacillus cereus, Filamentous fungi and yeast count, total fecal coliforms, and Salmonella ssp. search. Sensory analysis was performed utilizing acceptance testing of characteristics on a nine-point hedonic scale for various attributes, including purchasing intention of the tested PB. Bars showed 20% moisture, 2.3% ash, 20-23% protein and 19% lipids. The effect of increasing of chia was to increase crude fiber content and decrease total carbohydrate and total energy value. All samples were within the microbiological food standards established by current legislation. All PB formulations obtained a good overall impression index and all characteristics were above mean grades, with the exception of taste (63%) in the PB containing 0% chia. Chia grain has a positive influence on sensory aspects and appears to be an alternative way to increase the nutritional quality of high-protein diet bars.
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3دورية أكاديمية
المؤلفون: Tibana, Ramires Alsamir, Sousa Neto, Ivo Vieira de, Sousa, Nuno Manuel Frade de, Krier, Felipe Carneiro, Almeida, Jeeser Alves de, Prestes, Jonato, Voltarelli, Fabrício Azevedo
المصدر: Revista Brasileira de Medicina do Esporte. March 2018 24(2)
مصطلحات موضوعية: Obesity, Resistance training, Food intake
الوصف: Introduction: Physical exercise changes food intake after an acute session; however further research is needed to identify the effects of resistance exercise (RE) with different training volumes. Objective: To investigate the effects of acute RE (two sessions) with different training volumes on the food intake of rats. Methods: Twenty four Wistar rats were randomly divided into three groups: control group (who did not perform RE; n=8); RE (stair climbing) with four series (G4, n=8) and overload of 50%, 75%, 90%, and 100% of the maximum load capacity of the animal and RE with eight series (G8; n=8) with two increases of each overload of 50%, 75%, 90%, and 100% of the maximum load capacity of the animal. The average amount of ingested feed was measured for each experimental group 24 and 48 hours after the first RE session and 72 hours after the second RE session. Results: The food intake of the groups that performed the RE session was significantly lower (p<0.05) when compared to the control group only at 24 hours after the first training session. After the second training session (72 h), the G8 showed a significantly lower food intake (p<0.05) when compared to G4 and the control group. However, the food consumption relative to the body mass of the animals (g/gBM) was significantly lower only after the second training session (72 h) in G8 (p<0.05) compared to G4 and the control group. Conclusion: Therefore, the resistance exercise decreases the food intake of rats after an acute session; in addition, a higher training volume seems to be more advantageous. Level of Evidence II; Therapeutic studies - Investigation of treatment results.
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4دورية أكاديمية
المؤلفون: Trombeta, Joice Cristina dos Santos, Prestes, Jonato, Nascimento, Dahan da Cunha, Tibana, Ramires Alsamir, Pereira, Guilherme Borges, Lima, Thiago da Rosa, Fraga, Géssica Alves, Vieira-Junior, Roberto Carlos, Voltarelli, Fabrício Azevedo
المصدر: Archives of Endocrinology and Metabolism. August 2017 61(4)
مصطلحات موضوعية: Body composition, HIV infection, irisin levels, muscle strength
الوصف: Objective Patients infected with the human immunodeficiency virus (HIV) have an increased risk of metabolic disorders and alterations on irisin levels. Therefore, the purpose of the current investigation was to quantify the circulating irisin concentration in HIV-infected subjects under highly active antiretroviral therapy and to determine possible correlations between irisin levels with fat mass, fat-free mass, body mass index (BMI), and muscle strength. Subjects and methods Cross-sectional study of 10 men (36.7 ± 11.3 years) and 10 women (42.5 ± 10.3 years) infected with HIV, recruited from the Specialized Service Center in the State Center of Reference for High and Medium Complexity. Blood samples were collected to determine plasma irisin levels, glucose, HDL, total cholesterol, triglycerides, and LDL. Body composition (fat mass, fat-free mass) and anthropometrics (body mass index; BMI) were measured by bioelectrical impedance. Muscle strength was assessed using a mechanic hand dynamometer and one maximum repetition tests. Results Irisin levels correlated positively with fat mass (r = 0.67; p = 0.001) and BMI (r = 0.48; p = 0.036). In contrast, there was an inverse correlation between irisin levels and fat-free mass (r = -0.41; p = 0.008) and five strength parameters: right hand grip (r = -0.46; p = 0.044); left hand grip (r = -0.50; p = 0.027), relative hand grip (r = -0.79; p = 0.001), bench press (r = -0.58; p = 0.009), leg press (r = -0.40; p = 0.085), and biceps curl (r = -0.059; p = 0.009). Conclusion Irisin levels correlated positively with body fat and negatively with fat-free mass and strength parameters in HIV-infected patients. Female patients infected with HIV receiving highly active antiretroviral therapy have higher levels of irisin compared with men in a similar circumstance.
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5دورية أكاديمية
المؤلفون: Neves, Claodete Hasselstrom, Aguiar, Andreo Fernando, Aguiar, Danilo Henrique, Leopoldo, André Soares, Lima-Leopoldo, Ana Paula, Voltarelli, Fabrício Azevedo, Lourenço, Fabio José, Sugizaki, Mario Mateus
المصدر: Revista Brasileira de Medicina do Esporte. October 2016 22(5)
مصطلحات موضوعية: cardiotônicos, bloqueadores dos canais de cálcio, atividade motora, coração
الوصف: Introdução: Cardiotônicos e bloqueadores de canais de cálcio são fármacos que alteram o Ca2+ intracelular e afetam o coração. Objetivo: Avaliar os efeitos da administração de verapamil e digoxina sobre a morfologia cardíaca de ratos submetidos ao treinamento intervalado (TAI). Métodos: Ratos Wistar machos divididos em seis grupos (N = 8): Controle, Digoxina (30,0 µg.kg-1/dia), Verapamil (5,0 mg.kg-1/dia), Treinado, Treinado+digoxina e Treinado+verapamil. O TAI foi realizado em esteira rolante (60 min/dia/60 dias) concomitantemente com a administração dos fármacos. Fragmentos do ventrículo esquerdo (VE) foram coletados para análise histológica. Resultados: A digoxina e o verapamil aumentaram a área total do VE (p < 0,002), capilares/área VE (p < 0,01) e área de cardiomiócitos (p < 2,8e-10), sendo que, nesta última variável, o verapamil promoveu efeito ainda maior que a digoxina. O TAI aumentou VE/PC (p < 4e-05), o diâmetro interno do VE (p < 2,7e-6), a área de cardiomiócitos (p < 1,8e-6) e reduziu o [Lac] (p < 2,6e-5). Houve interação entre TAI e fármacos na área total (p < 9,8e-5), capilares (p < 0,04), células/área (p < 0,004) e área de cardiomiócitos (p < 2e-16). Conclusão: A digoxina promoveu hipertrofia de cardiomiócitos e, quando associada ao TAI, potencializou a hipertrofia. O verapamil foi mais eficiente em aumentar a área de cardiomiócitos em comparação com a digoxina, porém somente de forma isolada.
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6دورية أكاديمية
المؤلفون: TROMBETA, Joice Cristina dos Santos, VIEIRA JUNIOR, Roberto Carlos, FERNANDES, Túlio Augusto Bonfim, RUBIM, Cássio Charnoski, PRESTES, Jonato, VOLTARELLI, Fabrício Azevedo
المصدر: Revista Brasileira de Educação Física e Esporte. December 2015 29(4)
مصطلحات موضوعية: HIV/AIDS, Cinética de lactato, Aptidão física, Força muscular, Sistema imune
الوصف: O objetivo deste estudo foi verificar a cinética de lactato sanguíneo (CLS) e a sua resposta ao treinamento físico combinado (TFC) bem como avaliar os efeitos sobre os aspectos bioquímicos, imunológicos, cardiorrespiratório e composição corporal de pessoas vivendo com HIV/AIDS. Doze voluntários HIV+ realizaram o TFC, por um período de 16 semanas, e foram submetidos às avaliações nos momentos pré, oito e 16 semanas de TFC. Ao final, houve um aumento das células TCD4+ e manutenção da carga viral, aumento do consumo máximo de oxigênio e da força muscular e, ainda, aumento do HDL-c e diminuição dos triglicerídeos e glicemia de jejum. Ainda, ocorreu aumento da CLS após o período de treinamento. Concluímos que o TFC influenciou positivamente os parâmetros imunológicos, bioquímicos, cardiorrespiratório e muscular, no entanto, a questão relacionada à CLS necessita de estudos futuros para maiores esclarecimentos.
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7دورية أكاديمية
المؤلفون: Sena, Mariana de Souza, Vieira Junior, Roberto Carlos, Rubim, Cássio Charnoski, Lima, Thiago da Rosa, Trombeta, Joice Cristina dos Santos, Garcia, Alesandro, Prestes, Jonato, Tibana, Ramires Alsamir, Voltarelli, Fabrício Azevedo
المصدر: Motriz: Revista de Educação Física. September 2015 21(3)
مصطلحات موضوعية: minimum blood lactate test, three incremental stages, rats, swimming
الوصف: he purpose of this study was to determine the lactate minimum intensity (LMI) by swimming LACmintest using three incremental stages (LACmintest3) and to evaluate its sensitivity to changes in aerobic fitness (AF). Twenty Wistar rats performed: LACmintest3 (1): induction of hyperlactacidemia and incremental phase (4%, 5% and 6.5% of bw); Constant loads tests on (2) and above (3) the LMI. Half of the animals were subjected to training with the individual LMI and the tests were performed again. The mean exercise load in LACmintest3 was 5.04 ± 0.13% bw at 5.08 ± 0.55 mmol L-1 blood lactate minimum (BLM). There was a stabilize and disproportionate increase of blood lactate in tests 2 and 3, respectively. After the training period, the mean BLM was lower in the trained animals. The LACmintest3 seems to be a good indicator of LMI and responsive to changes in AF in rats subjected to swim training.
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8دورية أكاديمية
المؤلفون: Silva, Valdemar Guedes da, Ravagnani, Fabrício Cesar de Paula, Godois, Allan da Mata, Maçanori, Odashiro, Voltarelli, Fabrício Azevedo, Inouye, Celso Massaschi, Coelho-Ravagnani, Christianne de Faria
المصدر: Motriz: Revista de Educação Física. March 2015 21(1)
مصطلحات موضوعية: swimming exercise, sub-threshold intensity, high-fat diet, hepatic steatosis, ejercicio, dieta rica en grasas, esteatosis hepática
الوصف: The purpose of the present study was to evaluate the effects of swimming physical training with sub-threshold load on the prevalence of hepatic steatosis in Wistar rats fed high-fat diets (cafeteria or baru). After 2 months of cafeteria diet administration, the rats were separated into 6 groups: Sedentary or Trained Baru diet; Sedentary or Trained Cafeteria diet; Sedentary or Trained standard diet. The trained groups were subjected to swimming exercise at sub-threshold intensity (2% of body weight) during 8 weeks, 5x/week, 1h/day. The body weight and hepatohistological changes were analyzed. Sedentary groups fed high-fat diets presented higher body weight gain when compared to control trained group. The swimming training at the proposed intensity was able to prevent the hepatic steatosis in rats fed high-fat diets.
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9دورية أكاديمية
المؤلفون: Tibana, Ramires Alsamir, Nascimento, Dahan da Cunha, Sousa, Nuno Manoel Frade de, Silva, Renato André Sousa da, Vieira, Amilton, Almeida, Jeeser Alves de, Voltarelli, Fabrício Azevedo, Prestes, Jonato
المصدر: Revista Brasileira de Cineantropometria & Desempenho Humano. October 2014 16(5)
مصطلحات موضوعية: Blood pressure, Hypertension, Physical exercise
الوصف: The aim of the present study was to analyze the response of systolic (SBP) and diastolic (DBP) blood following three experimental sessions: resistance exercise (RE), combined exercise (COMB-aerobic and RE) and control session (CON). Thirty women with metabolic syndrome (MS) were randomly assigned to one of three experimental groups: RE (n=10; 36.1 ± 9.0 years) (3 sets of 8-12 repetitions at 80% of 10RM in six exercises for whole body); COMB (n=10; 33.1 ± 5.0 years) (30 min of aerobic exercise at 65-70% of reserve heart rate which was followed by the same RE session) and CON (n=10; 30.4 ± 6.6 years). The SBP and DBP were measured before and every 15 min during 60 min following the experimental sessions. The COMB group presented greater delta SBP (ΔSBP) decrease at 15, 30 and 45 min post-exercise as compared with CON group (p <0.05); the RE group presented greater ΔSBP reduction at 30 and 45 min post-exercise also compared with CON group (p <0.05). In addition, the area under the curve of ΔSBP for COMB group (~30 mmHg of hypotension during 60 min, p ≤ 0.0005) and RE group (~19 mmHg of hypotension during 60 min, p = 0.024) were greater than the CON group. Therefore, RE and COMB elicited post-exercise hypotension in women with MS; COMB provided a greater decrease which may be of value in the prevention and treatment of cardiovascular disorders.
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10دورية أكاديمية
المؤلفون: Vieira Junior, Roberto Carlos, Silva, Carolina Mendes Santos, Araújo, Michel Barbosa de, Garcia, Alesandro, Voltarelli, Vanessa Azevedo, Reis Filho, Adilson Domingos dos, Voltarelli, Fabrício Azevedo
المصدر: Revista Brasileira de Medicina do Esporte. June 2013 19(3)
مصطلحات موضوعية: estresse oxidativo, glicogênio, proliferação celular
الوصف: INTRODUÇÃO: São escassos os estudos os quais verificaram os efeitos do exercício físico sobre os biomarcadores de estresse oxidativo e sua relação com o glicogênio muscular. OBJETIVO: O presente estudo verificou o efeito do treinamento aeróbio de natação (TAN) sobre os biomarcadores de estresse oxidativo, conteúdo de glicogênio e crescimento celular no músculo esquelético de ratos. MÉTODOS: Dezoito ratos Wistar macho (60 dias) foram divididos em dois grupos: Grupo Sedentário (SG; n = 10): ratos sedentários; e Grupo Treinado (TG; n = 8): ratos submetidos ao TAN (5,0 % do peso corporal), 1h/dia, 5X/semana, durante oito semanas. A atividade das enzimas antioxidantes (AEA) superóxido dismutase (SOD; U/ml), catalase (CAT; µmol/min/100 mg) e glutationa peroxidase (GPx; nmol/min/100 mg), bem como a concentração das substâncias que reagem ao ácido tiobarbitúrico (TBARs; nmolMDA/mg proteína) foram determinadas no músculo gastrocnêmio direito. Os conteúdos de glicogênio (mg/100 mg), proteína (g/100 g) e DNA (g/100 g) foram mensurados no músculo gastrocnêmio esquerdo. RESULTADOS: A AEA foi maior no TG (CAT: 0,87 ± 0,04; SOD: 6,49 ± 0,045; GPX: 6,49 ± 0,52) quando comparados com SG (CAT: 0,52 ± 0,03; SOD: 4,1 ± 0,37; GPx: 2,94 ± 0,56). Os níveis de TBARs foram menores em TG (TG: 2,35 ± 0,41; SG: 8,90 ± 0,47). O conteúdo de glicogênio muscular (SG: 0,108 ± 0,013; TG: 0,320 ± 0,012) e a razão proteína/DNA (SG: 24,94 ± 3,25; TG: 41,68 ± 4,02) foram maiores no TG. CONCLUSÃO: Em conjunto, estes dados confirmam que o TAN melhorou a defesa antioxidante, a qual pode estar associada ao aumento do conteúdo de glicogênio no músculo esquelético dos animais.
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