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A practical approach to assess leg muscle oxygenation during ramp-incremental cycle ergometry in heart failure BJMBR
Barroco,A.C.; Sperandio,P.A.; Reis,M.; Almeida,D.R.; Neder,J.A..
Heart failure is characterized by the inability of the cardiovascular system to maintain oxygen (O2) delivery (i.e., muscle blood flow in non-hypoxemic patients) to meet O2 demands. The resulting increase in fractional O2 extraction can be non-invasively tracked by deoxygenated hemoglobin concentration (deoxi-Hb) as measured by near-infrared spectroscopy (NIRS). We aimed to establish a simplified approach to extract deoxi-Hb-based indices of impaired muscle O2 delivery during rapidly-incrementing exercise in heart failure. We continuously probed the right vastus lateralis muscle with continuous-wave NIRS during a ramp-incremental cardiopulmonary exercise test in 10 patients (left ventricular ejection fraction <35%) and 10 age-matched healthy males....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Heart failure; Exercise; Oxygen; Muscle; Near-infrared spectroscopy.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017001200603
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Acute exercise performed close to the anaerobic threshold improves cognitive performance in elderly females BJMBR
Córdova,C.; Silva,V.C.; Moraes,C.F.; Simões,H.G.; Nóbrega,O.T..
The objective of the present study was to compare the effect of acute exercise performed at different intensities in relation to the anaerobic threshold (AT) on abilities requiring control of executive functions or alertness in physically active elderly females. Forty-eight physically active elderly females (63.8 ± 4.6 years old) were assigned to one of four groups by drawing lots: control group without exercise or trial groups with exercise performed at 60, 90, or 110% of AT (watts) and submitted to 5 cognitive tests before and after exercise. Following cognitive pretesting, an incremental cycle ergometer test was conducted to determine AT using a fixed blood lactate concentration of 3.5 mmol/L as cutoff. Acute exercise executed at 90% of AT resulted in...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aging; Alert; Anaerobic threshold; Exercise; Executive functions; Response time test.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2009000500010
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Aerobic training modulates T cell activation in elderly women with knee osteoarthritis BJMBR
Gomes,W.F.; Lacerda,A.C.R.; Brito-Melo,G.E.A.; Fonseca,S.F.; Rocha-Vieira,E.; Leopoldino,A.A.O.; Amorim,M.R.; Mendonça,V.A..
Osteoarthritis of the knee (kOA) is a disease that mainly affects the elderly and can lead to major physical and functional limitations. However, the specific effects of walking, particularly on the immune system, are unknown. Therefore, this study aimed to analyze the effect of 12 weeks of walking (3×/week) on the leukocyte profile and quality of life (QL) of elderly women with kOA. Sixteen women (age: 67±4 years, body mass index: 28.07±4.16 kg/m2) participated in a walking program. The variables were assessed before and after 12 weeks of training with a progressively longer duration (30–55 min) and higher intensity (72–82% of HRmax determined using a graded incremental treadmill test). The QL was assessed using the Medical Outcomes Study 36-Item Short...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Osteoarthritis; Elderly; Exercise; CD4-positive T-lymphocytes; CD8-positive T-lymphocytes.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2016001100705
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Association Between Exercise and Treatment with Liraglutide in Obese Rats by Cafeteria Diet BABT
Didek,Daiane; Cordeiro,Maiara Mikuska; Xavier,João Lucas de Paula; Ribeiro,Paulo Roberto; Rentz,Thiago; Franco,Gilson Cesar Nobre; Kanunfre,Carla Cristine; Emilio,Henriette Rosa de Oliveira; Scomparin,Dionízia Xavier.
Abstract The objective of this study was to evaluate the effect of liraglutide, an analog of glucagon-like peptide-1 (GLP-1) in association with physical exercise, on the metabolic and biochemical parameters of rats induced to obesity with a cafeteria diet. Male Wistar rats, aged 21 days, were randomly divided into: Controls (CON) receiving standard feed and water ad libitum; and obese (OBESE) receiving cafeteria diet ad libitum, added to the standard diet. Groups were then subdivided into: Liraglutide animals that received subcutaneous injections of liraglutide from 80 to 90 days of life; exercised (EXE) animals submitted to swimming sessions, three days a week (15 min); and liraglutide + EXE animals that received liraglutide in association with physical...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Obesity; Liraglutide; GLP-1; Metabolic syndrome; Exercise.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132019000100305
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Biomechanics and structural adaptations of the rat femur after hindlimb suspension and treadmill running BJMBR
Shimano,M.M.; Volpon,J.B..
We microscopically and mechanically evaluated the femurs of rats subjected to hindlimb unloading (tail suspension) followed by treadmill training. Female Wistar rats were randomly divided into five groups containing 12-14 rats: control I (118 days old), control II (139 days old), suspended (tail suspension for 28 days), suspended-released (released for 21 days after 28 days of suspension), and suspended-trained (trained for 21 days after 28 days of suspension). We measured bone resistance by bending-compression mechanical tests of the entire proximal half of the femur and three-point bending tests of diaphyseal cortical bone. We determined bone microstructure by tetracycline labeling of trabecular and cortical bone. We found that tail suspension weakened...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Hindlimb suspension; Exercise; Biomechanics; Femur; Rat.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2009000400004
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Breathing pattern and thoracoabdominal motion during exercise in chronic obstructive pulmonary disease BJMBR
Alves,G.S.; Britto,R.R.; Campos,F.C.; Vilaça,A.B.O.; Moraes,K.S.; Parreira,V.F..
Subjects with chronic obstructive pulmonary disease (COPD) present breathing pattern and thoracoabdominal motion abnormalities that may contribute to exercise limitation. Twenty-two men with stable COPD (FEV1 = 42.6 ± 13.5% predicted; age 68 ± 8 years; mean ± SD) on usual medication and with at least 5 years of diagnosis were evaluated at rest and during an incremental cycle exercise test (10 watts/2 min). Changes in respiratory frequency, tidal volume, rib cage and abdominal motion contribution to tidal volume and the phase angle that measures the asynchrony were analyzed by inductive respiratory plethysmography at rest and during three levels of exercise (30-50, 70-80, and 100% maximal work load). Repeated measures ANOVA followed by pre-planned contrasts...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Breathing pattern; Chronic obstructive pulmonary disease; Exercise; Plethysmography; Ventilation.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2008001100001
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Can the Intermittent Training Generate Alterations on the Liver Tissue of Rats Submitted to a Hyperlipidic Diet? International Journal of Morphology
Magalhães,Alan José Barbosa; Castoldi,Robson Chacon; Camargo,Regina Celi Trindade; Ozaki,Guilherme Akio Tamura; Costalonga,Regiane Rocha; Moreira,Rafael Junges; Seraphim,Patricia Monteiro; Camargo Filho,José Carlos Silva.
Studies indicate that increasing physical activity and decreasing levels of fat in the liver help to decrease the risk of morbidity from liver conditions. This study aimed to evaluate the effects of an eight week intermittent training program on the liver tissue of rats subjected to a hyperlipidic diet. The study consisted of 30 male Wistar rats, divided into the following groups: Sedentary Control (SC) Exercise Control (EC) (fed on standard feed and water) Sedentary Obese (SO) and Exercise Obese (EO) (fed on bacon, ham, sausage, biscuits, soda and standard feed), which performed intermittent training through electrically stimulated jumps, with three sets of 12 repetitions, three times per week for eight weeks. At the end of the training period, the...
Tipo: Journal article Palavras-chave: High fat diet; Exercise; Hepatocytes.
Ano: 2016 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022016000100014
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Cardiopulmonary exercise testing variables as predictors of long-term outcome in thoracic sarcoidosis BJMBR
Lopes,A.J.; Menezes,S.L.S.; Dias,C.M.; Oliveira,J.F.; Mainenti,M.R.M.; Guimarães,F.S..
Cardiopulmonary exercise testing (CPET) plays an important role in the assessment of functional capacity in patients with interstitial lung disease. The aim of this study was to identify CPET measures that might be helpful in predicting the vital capacity and diffusion capacity outcomes of patients with thoracic sarcoidosis. A longitudinal study was conducted on 42 nonsmoking patients with thoracic sarcoidosis (median age = 46.5 years, 22 females). At the first evaluation, spirometry, the measurement of single-breath carbon monoxide diffusing capacity (D LCOsb) and CPET were performed. Five years later, the patients underwent a second evaluation consisting of spirometry and D LCOsb measurement. After 5 years, forced vital capacity (FVC)% and D LCOsb% had...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Sarcoidosis; Exercise; Respiratory function tests; Respiratory mechanics.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2012000300012
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Cardiorespiratory and metabolic determinants during moderate and high resistance exercise intensities until exhaustion using dynamic leg press: comparison with critical load BJMBR
Arakelian,V.M.; Goulart,C.L.; Mendes,R.G.; Caruso,F.C.; Baldissera,V.; Arena,R.; Borghi-Silva,A..
The objective of this study was to assess cardiovascular, respiratory, and metabolic responses during a commonly used dynamic leg press resistance exercise until exhaustion (TEx) at different intensities and compare with critical load (CL). This was a prospective, cross-sectional, controlled, and crossover study. Twelve healthy young men (23±2.5 years old) participated. The subjects carried out three bouts of resistance exercise in different percentages of 1 repetition maximum (60, 75, and 90% 1RM) until TEx. CL was obtained by means of hyperbolic model and linearization of the load-duration function. During all bout intensities, oxygen uptake (VO2), carbon dioxide production (VCO2), ventilation (VE), and respiratory exchange ratio (RER) were obtained....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Load; Physiological; Muscle fatigue; Exercise; Cardiorespiratory.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2018001100613
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Catecholamine response to exercise in individuals with different levels of paraplegia BJMBR
Steinberg,L.L.; Lauro,F.A.A.; Sposito,M.M.M.; Tufik,S.; Mello,M.T.; Naffah-Mazzacoratti,M.G.; Cavalheiro,E.A.; Silva,A.C..
The purpose of this study was to investigate the effect of the level of injury on the serum level of norepinephrine (Nor) and epinephrine (Epi) at rest and after maximal exercise in individuals with paraplegia. Twenty-six male spinal cord-injured subjects with complete paraplegia for at least 9 months were divided into two groups of 13 subjects each according to the level of injury, i.e., T1-T6 and T7-T12. Serum Nor and Epi concentrations were measured by HPLC-ECD, at rest (PRE) and immediately after a maximal ergospirometric test (POST). Statistical analysis was performed using parametric and non-parametric tests. Maximal heart rate, peak oxygen uptake, and PRE and POST Nor were lower in the T1-T6 than in the T7-T12 group (166 ± 28 vs 188 ± 10 bpm; 18.0 ±...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Catecholamines; Paraplegia; Exercise; Norepinephrine; Epinephrine; Spinal cord injury.
Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2000000800007
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Central release of nitric oxide mediates antinociception induced by aerobic exercise BJMBR
Galdino,G.S.; Duarte,I.D.; Perez,A.C..
Nitric oxide (NO) is a soluble gas that participates in important functions of the central nervous system, such as cognitive function, maintenance of synaptic plasticity for the control of sleep, appetite, body temperature, neurosecretion, and antinociception. Furthermore, during exercise large amounts of NO are released that contribute to maintaining body homeostasis. Besides NO production, physical exercise has been shown to induce antinociception. Thus, the present study aimed to investigate the central involvement of NO in exercise-induced antinociception. In both mechanical and thermal nociceptive tests, central [intrathecal (it) and intracerebroventricular (icv)] pretreatment with inhibitors of the NO/cGMP/KATP pathway (L-NOArg, ODQ, and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Nitric oxide; Exercise; Pain; Antinociception.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2015000900790
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Comparison of the Polar S810i monitor and the ECG for the analysis of heart rate variability in the time and frequency domains BJMBR
Vanderlei,L.C.M.; Silva,R.A.; Pastre,C.M.; Azevedo,F.M.; Godoy,M.F..
The aim of the present study was to compare heart rate variability (HRV) at rest and during exercise using a temporal series obtained with the Polar S810i monitor and a signal from a LYNX® signal conditioner (BIO EMG 1000 model) with a channel configured for the acquisition of ECG signals. Fifteen healthy subjects aged 20.9 ± 1.4 years were analyzed. The subjects remained at rest for 20 min and performed exercise for another 20 min with the workload selected to achieve 60% of submaximal heart rate. RR series were obtained for each individual with a Polar S810i instrument and with an ECG analyzed with a biological signal conditioner. The HRV indices (rMSSD, pNN50, LFnu, HFnu, and LF/HF) were calculated after signal processing and analysis. The unpaired...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Heart rate variability; Autonomic nervous system; Exercise; Spectral analysis; ECG; Polar S810i monitor.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2008001000004
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Creatine supplementation in trained rats causes changes in myenteric neurons and intestinal wall morphometry Biocell
Franzói De Moraes,Solange Marta; Brogio,Thais Andréia; Nelisis Zanoni,Jacqueline; Vicente Umada Zapater,Mariana Cristina; Barnabé Peres,Sidney; Hernandes,Luzmarina.
Creatine is widely used by athletes as an ergogenic resource. The aim of this study was to evaluate the influence of creatine supplementation on the duodenum of rats submitted to physical training. The number and myenteric neuronal cell bodies as well mucosal and muscular tunic morphometry were evaluated. Control animals received a standard chow for 8 weeks, and the treated ones received the standard chow for 4 weeks and were later fed with the same chow but added with 2% creatine. Animals were divided in groups: sedentary, sedentary supplemented with creatine, trained and trained supplemented with creatine. The training consisted in treadmill running for 8 weeks. Duodenal samples were either processed for whole mount preparations or for paraffin embedding...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Nutritional supplementation; Duodenum; Exercise.
Ano: 2013 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-95452013000200004
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Does the incremental shuttle walk test require maximal effort in young obese women? BJMBR
Jürgensen,S.P.; Trimer,R.; Di Thommazo-Luporini,L.; Dourado,V.Z.; Bonjorno-Junior,J.C.; Oliveira,C.R.; Arena,R.; Borghi-Silva,A..
Obesity is a chronic disease with a multifaceted treatment approach that includes nutritional counseling, structured exercise training, and increased daily physical activity. Increased body mass elicits higher cardiovascular, ventilatory and metabolic demands to varying degrees during exercise. With functional capacity assessment, this variability can be evaluated so individualized guidance for exercise training and daily physical activity can be provided. The aim of the present study was to compare cardiovascular, ventilatory and metabolic responses obtained during a symptom-limited cardiopulmonary exercise test (CPX) on a treadmill to responses obtained by the incremental shuttle walk test (ISWT) in obese women and to propose a peak oxygen consumption...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Incremental shuttle walk test; Exercise; Obesity.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2016000800703
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Efeito de dietas com adição de óleo e do treinamento sobre a atividade muscular de equinos submetidos à prova de resistência - DOI: 10.4025/actascianimsci.v30i3.5714 Animal Sciences
Brandi, Roberta Ariboni; UNESP; Furtado, Carlos Eduardo; UEM; Martins, Elias Nunes; UEM; Freitas, Eduardo Villela Villaça; UNIUBE; Lacerda-Neto, Jose Correa de; UNESP; Queiroz-Neto, Antonio de; UNESP.
O trabalho teve como objetivo verificar o efeito da adição de óleo de soja e do treinamento na atividade plasmática das enzimas Creatina Quinase (CK) e Aspartato Aminotransferase (AST) sobre o trabalho muscular de equinos submetidos a teste de resistência. Foram fornecidas dietas experimentais compostas por cinco níveis de óleo de soja no concentrado (controle, 6, 12, 18 e 24%). Foram utilizados 20 equinos da raça Árabe, peso médio de 400 kg, submetidos a teste de resistência de 80 km em esteira rolante, em Laboratório de Fisiologia do Exercício. A simulação de enduro foi dividida em quatro fases de 20 km cada. Observou-se efeito (p < 0,05) da adição de óleo e da distância percorrida sobre as variáveis AST e CK durante o enduro e também no período de...
Palavras-chave: 5.04.03.00-1 Nutrição e Alimentação Animal aspartato aminotransferase; Cavalos; Creatina quinase; Exercício. aspartate aminotransferase; Horse; Creatine kinase; Exercise.
Ano: 2008 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/5714
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Effect of exercise on occurrence of diurnal rhythms of plasma ions and metabolites in Thoroughbred racehorses Arq. Bras. Med. Vet. Zootec.
Viana,P.C.R.; Caldas-Bussiere,M.C.; Marins,R.S.Q.S.; Menna-Barreto,L.S.; Cury,L.J..
Records of plasma calcium (Ca++), phosphorus (Pi), potassium (K+), sodium (Na+), chloride (Cl-), magnesium (Mg++), iron (Fe++), glucose, cholesterol, triglycerides and total protein levels were measured to determine the effects of exercise on occurrence of diurnal rhythms in Throughbred racehorses (n=7) under physical training. Physical activities consisted of gallop on the track and walking. Blood samples were collected from jugular vein every 4h over a 48h period. Plasma Ca++, K+, Mg++ and Na+ levels were obtained by flame photometry; and, Pi, Cl-, Fe++, glucose, cholesterol, triglycerides and total protein levels were measured by colorimetric tests using visible UV spectrophotometry. The data were analyzed using a 24h period to each exercise performed....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Horse; Chronobiology; Exercise; Ions; Metabolites; Diurnal rhythms.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352007000400006
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Effect of exercise on the caloric intake of breast cancer patients undergoing treatment BJMBR
Battaglini,C.L.; Mihalik,J.P.; Bottaro,M.; Dennehy,C.; Petschauer,M.A.; Hairston,L.S.; Shields,E.W..
The purpose of this study was to examine the effects of an exercise intervention on the total caloric intake (TCI) of breast cancer patients undergoing treatment. A secondary purpose was to determine whether or not a relationship existed between changes in TCI, body fat composition (%BF), and fatigue during the study, which lasted 6 months. Twenty females recently diagnosed with breast cancer, scheduled to undergo chemotherapy or radiation, were assigned randomly to an experimental (N = 10) or control group (N = 10). Outcome measures included TCI (3-day food diary), %BF (skinfolds), and fatigue (revised Piper Fatigue Scale). Each exercise session was conducted as follows: initial cardiovascular activity (6-12 min), followed by stretching (5-10 min),...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Exercise; Breast cancer; Caloric intake; Fatigue; Body composition.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2008000800012
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Effect of high-fat diets on body composition, lipid metabolism and insulin sensitivity, and the role of exercise on these parameters BJMBR
Coelho,D.F.; Pereira-Lancha,L.O.; Chaves,D.S.; Diwan,D.; Ferraz,R.; Campos-Ferraz,P.L.; Poortmans,J.R.; Lancha Junior,A.H..
Dietary fat composition can interfere in the development of obesity due to the specific roles of some fatty acids that have different metabolic activities, which can alter both fat oxidation and deposition rates, resulting in changes in body weight and/or composition. High-fat diets in general are associated with hyperphagia, but the type of dietary fat seems to be more important since saturated fats are linked to a positive fat balance and omental adipose tissue accumulation when compared to other types of fat, while polyunsaturated fats, omega-3 and omega-6, seem to increase energy expenditure and decrease energy intake by specific mechanisms involving hormone-sensitive lipase, activation of peroxisome proliferator-activated receptor α (PPARα) and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fat; Obesity; Insulin; PUFA; Diet; Exercise.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2011001000001
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Effect of physical training on liver expression of activin A and follistatin in a nonalcoholic fatty liver disease model in rats BJMBR
Silva,R.N.; Bueno,P.G.; Avó,L.R.S.; Nonaka,K.O.; Selistre-Araújo,H.S.; Leal,A.M.O..
Nonalcoholic fatty liver disease (NAFLD) is characterized by fat accumulation in the liver and is associated with obesity and insulin resistance. Activin A is a member of the transforming growth factor beta (TGF)-β superfamily and inhibits hepatocyte growth. Follistatin antagonizes the biological actions of activin. Exercise is an important therapeutic strategy to reduce the metabolic effects of obesity. We evaluated the pattern of activin A and follistatin liver expression in obese rats subjected to swimming exercise. Control rats (C) and high-fat (HF) diet-fed rats were randomly assigned to a swimming training group (C-Swim and HF-Swim) or a sedentary group (C-Sed and HF-Sed). Activin βA subunit mRNA expression was significantly higher in HF-Swim than in...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Activin A; Follistatin; Steatosis; Nonalcoholic fatty liver disease; Obesity; Exercise.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2014000900746
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Effect of Statins and Aerobic Physical Exercise on Liver Function in Dyslipidemic Rats: Morphometric Study International Journal of Morphology
Accioly,Marilita Falângola; Souza,Dorotéia Rossi Silva; Padulla,Susimary Aparecida Trevizan; Camargo Filho,José Carlos Silva; do Carmo,Edna Maria; Martins,Alex Tadeu; Brandão,Antônio Carlos; Azoubel,Reinaldo.
The present study was carried out to evaluate the effect of statins associated with physical exercise (PE) in liver cells in dyslipidemic rats through cariometry. The animals were divided into six groups: animals subjected to a hypercholesterolemic diet (HD), simvastatin, with (G1) and without (G2) physical exercise (PE); HD submitted (G3) or not (G4) to PE, and commercial food diet (F) with (G5) and without (G6) PE. Histological analysis of the liver was performed by staining the slides with hematoxylin and eosin. The cariometric study included measuring the major and minor diameters of the hepatocytes nuclei. The Shapiro-Wilk test was also performed. To determine the differences among the groups, the Kruskal-Wallis Test with Dunn's post-test were...
Tipo: Journal article Palavras-chave: Simvastatin; Exercise; Diet; Cariometry.
Ano: 2013 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022013000400026
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