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Search Results: 1 - 10 of 19410 matches for " Jonato;Ferreira "
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Effects of different exercise programs in clinic and functional status of overweight women
Rodrigo Dias,Jonato Prestes,Renata Manzatto,Clílton Kraüss de Oliveira Ferreira
Revista Brasileira de Cineantropometria e Desempenho Humano , 2006,
Abstract: The present day physical exercise has been indicated as a tool in the prevention of chronic degenerative illness, between them the obesity. In this way, the aim of this study was to evaluate the effect of different short duration exercise protocols on body composition, aerobic capacity and muscle strength. 20 women classifiedwith overweight, 28.5 years old in average, 77.77kg body mass and 34.17% of body fat were selected. The participants were randomly divided in the following groups: I) a group that performed 4 weeks of strength, aerobic with bicycle and/or treadmill and circuit training, identified as (FAC, n=10) and II) a group that performed 4 weeksof strength and aerobic training, exclusively composed by bicycle and/or treadmill, identified by (FA; n=10). The evaluation before the beginning of the exercise training served as the control baseline, composing respectively the control FAC group (ConFAC, n=10) and the control FA group (ConFA, n=10). Body fat was measured by bioelectrical impedance. Strength training loads were determined by load repetitions test and VO2max was estimated by Canadian Aerobic Fitness Test 1.600 meters walking protocol. Both groups showed non significant reductions inthe variables: body mass, body fat, fat mass, waist circumference, hip circumference, waist hip ratio and fat free mass maintenance. However, VO2max significant statistical increase was observed only for FAC group. The exercised groups showed increase in strength production capacity, (p≤0.05). These results indicate that, even ashort training period (4 weeks) induce positive adaptations in functional status of this population. RESUMOAtualmente o exercício físico tem sido indicado como uma ferramenta na preven o de doen as cr nico degenerativas, dentre elas a obesidade. Neste sentido, o presente estudo teve como objetivo avaliar os efeitos de diferentes protocolos de exercício de curta dura o sobre a composi o corporal, capacidade aeróbia e for amuscular. Foram selecionadas vinte mulheres classificadas com excesso de peso, idade média de 28,5 anos, massa corporal 77,77kg e gordura corporal 34,17%. As participantes foram divididas aleatoriamente nos grupos: I) grupo que realizou 4 semanas de Componente For a (exercícios contra-resistência) e Componente Aeróbio(bicicleta estacionária e/ou esteira e treinamento em circuito com exercícios contra-resistência), sendo identificado pela sigla (FAC, n=10) e II) grupo que realizou 4 semanas de Componente For a (exercícios contra-resistência) e Componente Aeróbio (composto somente por bicicleta estacionária e/ou esteira
Phagocytic responses of peritoneal macrophages and neutrophils are different in rats following prolonged exercise
Ferreira, Clílton K. O.;Prestes, Jonato;Donatto, Felipe F.;Verlengia, Rozangela;Navalta, James W.;Cavaglieri, Cláudia R.;
Clinics , 2010, DOI: 10.1590/S1807-59322010001100020
Abstract: objective: to analyze the effects of exhausting long-duration physical exercise (swimming) sessions of different durations and intensities on the number and phagocytic capacity of macrophages and neutrophils in sedentary rats. introduction: exercise intensity, duration and frequency are important factors in determining immune response to physical effort. thus, the effects of exhausting long-duration exercise are unclear. methods: wistar rats were divided into two groups: an untreated group (macrophage study) and oyster glycogen-treated rats (neutrophil study). in each group, the animals were subdivided into five groups (10 rats per group): unexercised controls, an unadapted low-intensity exercise group, an unadapted moderate-intensity exercise group, a preadapted low-intensity exercise group and a preadapted moderate-intensity exercise group. all exercises were performed to exhaustion, and preadaptation consisted of 5, 15, 30 and 45 min sessions. results: macrophage study: the number of peritoneal macrophages significantly decreased (9.22 ± 1.78 x 106) after unadapted exercise but increased (21.50 ± 0.63 x 106) after preadapted low-intensity exercise, with no changes in the moderate-intensity exercise group. phagocytic capacity, however, increased by more than 80% in all exercise groups (low/moderate, unadapted/preadapted). neutrophil study: the number of peritoneal neutrophils significantly decreased after unadapted (29.20 ± 3.34 x 106) and preadapted (50.00 ± 3.53 x 106) low-intensity exercise but increased after unadapted (127.60 ± 5.14 x 106) and preadapted (221.80 ± 14.85 x 106) moderate exercise. neutrophil phagocytic capacity decreased by 63% after unadapted moderate exercise but increased by 90% after corresponding preadapted sessions, with no changes in the low-intensity exercise groups. conclusion: neutrophils and macrophages of sedentary rats respond differently to exercise-induced stress. adaptation sessions reduce exercise-induced stress on the immune s
Efeitos da suplementa??o de fibras solúveis sobre as células do sistema imune após exercício exaustivo em ratos treinados
Donatto, Felipe F.;Prestes, Jonato;Ferreira, Clílton K.O.;Dias, Rodrigo;Frollini, Anelena B.;Leite, Gerson S.;Urtado, Christiano B.;Verlengia, Rozangela;Palanch, Adriane C.;Perez, Sérgio E.A.;Cavaglieri, Cláudia R.;
Revista Brasileira de Medicina do Esporte , 2008, DOI: 10.1590/S1517-86922008000600011
Abstract: exercise modality, volume, intensity, as well as physical fitness and nutritional factors may modulate the immune response. the purpose of this investigation was to verify the effects of chronic oat bran supplementation on immune cells in trained rats submitted to an extenuating test. wistar rats (two months old), +200g weight, divided into three groups (n = 9, per group) were used: 1) a sedentary control (c) 2) trained for eight weeks submitted to an exhaustion test (ex), and 3) trained for eight weeks submitted to an exhaustion test with 30% oat bran supplementation (exa). training consisted of 60 daily minutes of swimming, five days a week, during eight weeks. the analyses conducted were: total leukocytes, lymphocytes from lymph nodes, peritoneal macrophages and peritoneal macrophages phagocytic capacity. statistical analyses were done by the two-way anova test, followed by tukey's post hoc test (p < 0.05). ex group presented leukocytosis when compared to control; however, exa group did not. in exercised group, comparison with exa has shown lower leukocytosis in relation to ex. no significant alteration was observed for tissue lymphocytes in any of the exercised groups. the number of peritoneal macrophages as well as phagocytic capacity of this cell was higher in exercised groups. in oat bran supplemented group the phagocytic capacity was higher as compared to exhaustion group without oat bran. soluble fibers supplementation has shown benefic results with regard to immune alterations induced by exhaustive exercise, and increased peritoneal macrophages phagocytic capacity in rats trained for eight weeks submitted to an exhaustion test.
Cancer: benefícios do treinamento de for?a e aeróbio
Nascimento, Elaine Batista do;Leite, Richard Diego;Prestes, Jonato;
Revista da Educa??o Física / UEM , 2011, DOI: 10.4025/reveducfis.v22i4.11670
Abstract: the aim of the present study was to analyze the benefits of resistance and aerobic training during and after-treatment in patients with cancer. to this review, periodicals from pubmed, mediline, scielo and lilacs database were used. from the scientific evidence presented in the selected studies, it can be detached that exercise improves functional capacity, body composition, activity of natural killer cells (nk), humor state and life quality in individuals with cancer. it is possible to conclude that the combination of resistance and aerobic training elicit benefits for patients with cancer during and after treatment, being well tolerated.
Relationship between physical exercise, muscle damage and delayed-onset muscle soreness
Denis Foschini,Jonato Prestes,Mário Augusto Charro
Revista Brasileira de Cineantropometria e Desempenho Humano , 2007,
Abstract: The objective of the present study was to investigate the relationship between physical exercise involving muscle damage and delayed-onset muscle soreness (DOMS). A literature review of national and international periodicals was carried out. Muscle structures (membranes, Z-line, sarcomeres, T tubules and myofi brils) can become damaged as a result of an imposed mechanical overload. Of greatest note are exercises requiring strength, particularly when muscular action is eccentric. Damage to skeletal musculature can be analyzed by direct methods (muscle biopsy or magnetic resonance) or by indirect methods (maximum voluntary movement, subjective pain perception scales, analysis of enzyme and protein concentrations in blood). Creatine kinase (CK), lactate dehydrogenase (LDH), myosin heavy chain fragments, troponin-I and myoglobin can be used as indirect markers of muscle damage. Both DOMS and muscle damage can be infl uenced by the type of activity, with emphasis on eccentric muscle movements, type of exercise, velocity of the movement, interval period between series, the level of individual fi tness, this last primarily affecting beginners. When myotrauma occurs, muscle damage repair is initiated by leukocytes migrating to the injured area, although, the histamines, prostaglandins, kinins and K+ produced by neutrophils and macrophages stimulate free nerve endings in the muscle, causing the DOMS. Despite this apparent relationship between muscle damage and DOMS, it is not possible toestablish a linear relationship between these two variables, since published data are divergent. RESUMO O objetivo desse estudo foi investigar as rela es do exercício físico com o dano muscular e dor muscular de início tardio (DMIT). Para tanto, foi realizada uma revis o de literatura de periódicos nacionais e internacionais. O dano muscular pode ocorrer em estruturas musculares (membranas, linha Z, sarcolema, túbulos T e miofi brilas) em fun o da sobrecarga mecanica imposta, destacam-se os exercícios de for a, principalmente com a o muscular excêntrica. Danos a musculatura esquelética podem ser analisados através de métodos diretos (amostras do músculo ou por ressonancia magnética) ou por métodos indiretos (a o voluntária máxima, escalas subjetivas da percep o de dor, análise das concentra es de enzimas e proteínas no sangue). A creatina quinase (CK), lactato desidrogenase (LDH), fragmentos da cadeia pesada de miosina, troponina-I e mioglobina podem ser utilizadas como marcadores indiretos de dano muscular. A DMIT e o dano muscular podem ser infl uenciados pelo tipo de a
Gilmar Senna,Belmiro F. Salles,Jonato Prestes,Rafael A. Mello
Journal of Sports Science and Medicine , 2009,
Abstract: Rest intervals between sets appear to be an important variable that can directly affect training volume and fatigue. The purpose of the present study was to compare the influence of two and five-minute rest intervals on the number of repetitions per set, per exercise and total repetitions in resistance training sessions. Fourteen trained men (23.0 ± 2. 2 yrs; 74.9 ± 4.1 kg; 1.75 ± 0.03 m) completed three sets per exercise, with 10RM load in four training sessions. Two sessions involved lower body exercises (leg press, leg extension and leg curl), with two-minute (SEQA) and with five-minute interval (SEQB). The other two sessions involved upper body exercises (bench press, pec-deck and triceps pulley), with two (SEQC) and five-minute intervals (SEQD). For two-minute, five of six exercises presented reductions in the second set, compared with the first set, and for the third set compared with the first and second sets. For five-minute, three of the six exercises presented reductions in the third set, compared with the first sets, and two of the six for the third set, compared with the second sets. The total number of repetitions in SEQA (66.7 ± 4.9) was significantly smaller than in SEQB (80.9 ± 6.9). Similarly, the total repetitions was significantly lower in SEQC (71.1 ± 4.7) compared with SEQD (83.7 ± 6.1). The results indicate that the training session performance is reduced by shorter intervals, being the initial exercises less affected during the progression of the sets
Effect of oat bran on time to exhaustion, glycogen content and serum cytokine profile following exhaustive exercise
Felipe F Donatto, Jonato Prestes, Anelena B Frollini, Adrianne C Palanch, Rozangela Verlengia, Claudia Cavaglieri
Journal of the International Society of Sports Nutrition , 2010, DOI: 10.1186/1550-2783-7-32
Abstract: The importance of dietary carbohydrates (CHO) in sporting performance was shown in the classical gaseous exchange experiments and biopsy studies, in which increasing exercise intensity utilises a greater proportion of CHO [1,2]. These data provided a major breakthrough for the science of sports nutrition, as it enabled the exact amount of CHO for athletes to be quantified.The recommendations concerning carbohydrates (CHO) for athletes are around 6 g-10 g/Kg/day [3-5] and these quantities vary in accordance with the quantity of body mass, gender, volume and intensity of the training. According to Tarnopolsky [3] elite athletes train around 8 to 40 hours per week, exponentially increasing their nutritional needs. The International Olympic Committee (IOC) recommends that: "following a diet rich in carbohydrates days before a competition can help to increase sporting performance, particularly when the exercise is kept up for longer than 60 minutes" [6].Exhaustive endurance exercise can induce immune disturbances and consequently increase susceptibility to upper respiratory tract infections [7]. Several mechanisms have been proposed in an attempt to explain the susceptibility of athletes to respiratory infections. Cortisol contributes only minimally to the exercise induced rise in liver glucose output [8], while it plays a role in immune disturbances [9,10]. Several components of the innate immune system are compromised during single or repeated sessions of exercise stress.Physical exercise can affect the levels of systemic cytokines, such as TNF-α [11-13], interleukin 1 beta (IL-1β) [12], IL-6 [12-16], interferon and others [11]. Recently, it has been suggested that the disruptions in the balance between pro- and antiinflammatory cytokines may lead to a loss of inflammatory control, with possible implications for overall immune system function [17,18]. The effect of ingesting carbohydrates during long duration exercises, with the purpose of attenuating immune suppressio
Influência do treinamento aeróbio nos mecanismos fisiopatológicos da hipertens?o arterial sistêmica
Pontes Júnior, Francisco Luciano;Prestes, Jonato;Leite, Richard Diego;Rodriguez, Daniel;
Revista Brasileira de Ciências do Esporte , 2010, DOI: 10.1590/S0101-32892010000200016
Abstract: the aim of the present review was to discuss the main influence of aerobic exercise on the physiopathological mechanisms of systemic hypertension. post-exercise hypotension (peh) results from persistent reductions in peripheral vascular resistance (pvr), mediated by the autonomic nervous system and vasodilator substances. exercise training lowers blood pressure through a decrease in total peripheral resistance and cardiac output at rest, as a result of reductions in sympathetic neural activity and increases in baroreflex sensitivity. additionally, chronic exercise may reduce the levels of serum catecholamines, improve the metabolic profile, modulate the functional activity of the vascular endothelium, and promote positive changes on body composition. thus, aerobic exercise is strongly recommended as a non pharmacologic strategy in the treatment of hypertension, not only for its effects on blood pressure, but also by decreasing the risk factors of cardiovascular disease.
Efeito de diferentes doses de nandrolona associado ao treinamento de for a sobre o perfil fenotípico e área de sec o transversa do músculo de ratos Effect of different doses of nandrolone associated with resistance training on muscle phenotypic profi le and cross-sectional area of rats
Rozangela Verlengia,Jonato Prestes,Ricardo Yukio Asano,Wagner José da Silva
Revista Brasileira de Educa??o Física e Esporte , 2013,
Abstract: O presente estudo avaliou a influência de diferentes doses de decanoato de nandrolona (DN) associado ao Treinamento de For a (TF) sobre o fenótipo de fibras e área de sec o transversa (AST) do músculo extensor longo dos dedos (EDL) em ratos "Wistar". Os animais foram divididos em sete grupos: controle (GC) e grupos de acordo com a concentra o de DN (0,1, 1, 2, 5, 10 e 20 mg/kg) administrada intramuscular 3 vezes/semana. O TF consistiu de saltos em meio líquido (carga 50-70% do peso corporal) 3x/semana, durante cinco semanas. A associa o do TF e DN promoveu a o modulatória sobre os tipos de fibras. Houve hipertrofia das fibras de contra o rápida (tipo II) em compara o com as fibras de contra o lenta (tipo I). Em conclus o, apesar da associa o do TF com DN aumentar a AST muscular e alterar o fenótipo das fibras, n o houve efeito gradual das doses mais altas. The aim of the present study was to evaluate the influence of different doses of nandrolone decanoate (ND) associated with Strength Training (ST) on the phenotype of fibers and cross-sectional area (CSA) of the extensor digitorum longus (EDL) in Wistar rats. The animals were divided into seven groups: control (CG) and the groups according to the dose of ND administered (0,1, 1, 2, 5, 10 e 20 mg/kg). The ST consisted of water jumping with loads of 50-70% of their body mass, three times per week during five weeks. The association of ST with ND promoted a modulatory role on the muscle fiber types. There was a hypertrophy of fast twitch fibers (type II) as compared with slow twitch (type I). In conclusion, although the association of ST with ND increased muscle CSA and modified fiber phenotype, there was no additional effect of higher doses.
Acute hormonal, immunological and enzymatic responses to a basketball game
Denis Foschini,Jonato Prestes,Richard Diego Leite,Gerson do Santos Leite
Revista Brasileira de Cineantropometria e Desempenho Humano , 2008,
Abstract: The objective of the present study was to analyze the acute hormonal, immunological and enzymatic responses of professional basketball players to a basketball game. The sample was composed of eight basketball athletes, with a minimum of 4 years’ experience in basketball. A real game was simulated with a total duration of 40 minutes, divided into two halves of 20 minutes each and an interval of 10 minutes between halves. Blood samples were collected before andimmediately after the game (20 ml, vacuum tube system). The variables analyzed were: testosterone and cortisol hormones, total leukocytes, neutrophils, lymphocytes, monocytes and the enzymes creatine kinase (CK) and lactate dehydrogenase (LDH). Statistical analysis was with descriptive statistics and the Student’s t test for paired samples to p≤0.05. The pre (13.34 nmol/L and 301.97 nmol/L) and post game (17.34 nmol/L and 395.91 nmol/L) levels of testosterone and cortisol were statistically different, with higher levels after the game for both hormones. The immune cell counts exhibited significant differences for total leukocytes (6393.75 nmol/L and 9158.75 nmol/L) and neutrophils (3532.5 nmol/L and 6392.62 nmol/L), with levels being higher after the game. No statistical differences were observed for the enzymatic variables. Therefore, based on the markers analyzed, testosterone and cortisol exhibited pronounced increases after the game and the samebehavior was observed for total leukocytes and neutrophils.
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