Consulta: subjectFacets:"Lactate"
Registros recuperados: 23
Data/hora: 04/06/2024 07:07:40

Hematological and biochemical characteristics during the transport of dog snapper Lutjanus jocu (Perciformes: Lutjanidae)
Provedor de dados: Neotropical Ichthyology
Autores: Oliveira,Bruno L.; Souza,Rodrigo M.; Silva Filho,Jorge P.; Gomes,Levy C.; Fernandes,Luiz F. Loureiro.
ABSTRACT The objective of this study was to evaluate stress responses in dog snapper (Lutjanus jocu) during transport by evaluating their hematological and biochemical responses. Twenty-five wild dog snapper specimens were used in the experiment (220 ± 68 g and 24.5 ± 2.5 cm total length). Blood samples were collected prior to transport (control), and fish were placed in two transport boxes, one with anesthetic and one without anesthetic. Immediately after transport and after 24 h, blood was collected from the fish that underwent each treatment (with anesthetic and without anesthetic). Biochemical and hematological results demonstrated the inefficiency of benzocaine as a stress reliever during handling and transport. Biochemical parameters revealed the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anesthetic; Benzocaine; Glucose; Lactate; Marine fish.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252018000100219

Survival, growth and metabolic parameters of silver catfish, Rhamdia quelen, juveniles exposed to different waterborne nitrite levels
Provedor de dados: Neotropical Ichthyology
Autores: Lima,Ronaldo L. de; Braun,Neiva; Kochhann,Daiani; Lazzari,Rafael; Radünz Neto,João; Moraes,Bibiana S.; Loro,Vania L.; Baldisserotto,Bernardo.
High nitrite (NO2-) levels may develop in aquaculture systems due to high fish density, but studies of lethal concentration values and the effect of NO2- on metabolic parameters and growth are scarce. Consequently, in this study was verified the lethal concentration at 96 h (LC50-96h) for (NO2-) in juvenile silver catfish, Rhamdia quelen and the effect of four waterborne NO2- concentrations (0.06, 0.46, 1.19, and 1.52 mg.L-1) on growth, and hepatic and muscular lactate, glucose, glycogen and protein. Nitrite LC50-96h was 20.46 (confidence interval: 16.10-23.68) mg.L-1. In the growth experiment, exposure to NO2- did not affect weight, length or specific growth rate, but due to mortality (66.7% and 100% after 20 and 40 days, respectively), biomass of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nitrogenous compound; Jundiá; Glucose; Lactate.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252011000100013

Classification of Bovine Follicles Based on the Concentrations of Steroids, Glucose and Lactate in Follicular Fluid and the Status of Accompanying Follicles
Provedor de dados: Obihiro University of Agriculture and Veterinary Medicine Academic Repository (OAK)
Autores: NISHIMOTO, Hiromi; HAMANO, Seizo; HILL, Glen Alan; MIYAMOTO, Akio; TETSUKA, Masafumi; 宮本, 明夫; 手塚, 雅文.
A simple and clear means to identify the physiological status of follicles is essential for study of follicular biology. In the present study, we verified a novel classification procedure based on analysis of the follicular population and glucose concentration in follicular fluid (FF) as an alternative method to classify bovine follicles. Paired ovaries were collected from heifers, and the number of follicles and stage of the CL were recorded. Follicles were initially divided into the following 3 groups according to diameter and the ratio of E2 and P4 (E/P): E2 active (E-A: E/P≥1), E2 inactive (E-I: E/P&lt;1, ≥8.5 mm) and small follicles (E/P&lt;1, &lt;8.5 mm). E-A follicles were easily identified as E2-rich dominant follicles and were further classified...
Palavras-chave: Bovine; Follicular fluid; Follicle classification; Glucose; Lactate; Steroid.
Ano: 2009
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2828

Growth and stress of dourado cultivated in cages at different stocking densities
Provedor de dados: Pesquisa Agropecuária Brasileira
Autores: Braun,Neiva; Dafre,Alcir Luiz; Lima,Ronaldo Lima de; Beux,Luis Fernando; Brol,Fernanda Franciele; Nuñer,Alex Pires de Oliveira.
The objective of this work was to evaluate the growth and the stress levels of juvenile dourado (Salminus brasiliensis) cultivated in cages. Fish stocked at densities of 15 (D15) and 30 (D30) fish per square meter were evaluated in a completely randomized design with three replicates. Fish were fed twice a day with extruded ration (42% crude protein). Density influenced only biomass and daily food intake, and glucose and lactate concentrations increased over time. D15 and D30 did not influence the growth of dourado. However, the increase of glucose and lactate levels over time indicates that cultivation in cages is a stressful condition for this species.
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Salminus brasiliensis; Glucose; Hematocrit; Hemoglobin; Lactate.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2013000800053

Evaluation of Physiological Parameters of Broilers with Dorsal Cranial Myopathy
Provedor de dados: Revista Brasileira de Ciência Avícola
Autores: Amaral,PC; Zimermann,C; Santos,LR; Noro,M; Prá,MD; Pilotto,F; Rodrigues,LB; Dickel,EL.
ABSTRACT There are several causes of carcass condemnation in poultry processing plants, including dorsal cranial myopathy (DCM), in which the anterior latissimus dorsi (ALD) muscle is affected. DCM etiology has not been elucidated yet, but this lesion impairs the visual quality of carcasses and causes economic losses due to downgrading and condemnation. The effects of this lesion on the systemic health of broilers are still unknown. In this context, the objective of this study was to evaluate muscle injury and systemic health indicators in broilers presenting or not DCM. The following parameters were evaluated: complete blood count (CBC), total protein, albumin, globulin, cholesterol, lactate, and glucose serum levels, aspartate aminotransferase (AST) and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aspartate aminotransferase; Complete blood count; Creatine kinase; Lactate; Muscle injury.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000100069

Oxygen consumption remains stable while ammonia excretion is reduced upon short time exposure to high salinity in Macrobrachium acanthurus (Caridae: Palaemonidae), a recent freshwater colonizer
Provedor de dados: Revista Brasileira de Zoologia
Autores: Freire,Carolina A.; Rios,Leonardo de P.; Giareta,Eloísa P.; Castellano,Giovanna C.
ABSTRACT Palaemonid shrimps occur in the tropical and temperate regions of South America and the Indo-Pacific, in brackish/freshwater habitats, and marine coastal areas. They form a clade that recently (i.e., ~30 mya) invaded freshwater, and one included genus, Macrobrachium Bate, 1868, is especially successful in limnic habitats. Adult Macrobrachium acanthurus (Wiegmann, 1836) dwell in coastal freshwaters, have diadromous habit, and need brackish water to develop. Thus, they are widely recognized as euryhaline. Here we test how this species responds to a short-term exposure to increased salinity. We hypothesized that abrupt exposure to high salinity would result in reduced gill ventilation/perfusion and decreased oxygen consumption. Shrimps were subjected...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ammonia; Lactate; Osmoregulation; Palaemonidae.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702017000100323

Evaluation of whey fermented by Enterococcus faecium in consortium with Veilonella parvula in ruminant feeding
Provedor de dados: Revista Brasileira de Zootecnia
Autores: Oliveira,Juliana Silva de; Queiroz,Augusto César de; Mantovani,Hilário Cuquetto; Bayão,Geraldo Fábio Viana; Detmann,Edenio; Santos,Edson Mauro; Silva,Thiago Carvalho da.
The objective of this study was to evaluate the whey fermented by Enterococcus faecium in consortium with Veilonella parvula on the in vitro growth of ruminal bacteria and as a supplement in the cattle diet. In the in vitro experiment, a randomized design, with the following combinations was used: ruminal bacteria; ruminal bacteria and inactive whey; ruminal bacteria and active whey; and active whey. In the in vivo experiment, five fistulated Zebu Holstein-Zebu crossbred heifers were distributed in a 5 × 5 Latin square. Supplements were formulated without the addition of whey, with the addition of two levels of unfermented whey (2.5 and 5 L/day) or two levels of fermented whey (2.5 and 5 L/day). A positive effect of the whey fermentation was detected on...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lactate; Organic acids; Propionic acid; Rumen.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000100025

Effect of propionic and lactic acids on in vitro ruminal bacteria growth
Provedor de dados: Revista Brasileira de Zootecnia
Autores: Oliveira,Juliana Silva de; Queiroz,Augusto César de; Mantovani,Hilário Cuquetto; Melo,Marcelo Rodrigues de; Detmann,Edenio; Santos,Edson Mauro; Bayão,Geraldo Fábio Viana.
The objective of this work was to evaluate the effect of the levels of lactic and propionic acids on in vitro fermentation of ruminal microorganisms. In experiment 1, the levels, in a total of 12 were the following: addition of 0 (control 1), 50, 100, 150, 200 and 250 mM of lactic acid and 0 (control 2), 50, 100, 150, 200 and 250 mM of propionic acid, respectively, in incubation flasks, which contained ruminal inoculum, glucose and synthetic culture medium, with two repetitions for each combination. In experiment 2, the combinations, in a total of 4, were the following: presence of 12 and 24 mM of propionic acid and 0 mg of glucose, respectively; presence of 12 and 24 mM of propionic acid and 40 mg of glucose, respectively, to the incubation flasks which...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lactate; Food additive; Propionate; Ruminal manipulation.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000500025

Effect of low or high stress in pre-slaughter handling on pig carcass and meat quality
Provedor de dados: Revista Brasileira de Zootecnia
Autores: Peres,Louise Manha; Bridi,Ana Maria; Silva,Caio Abércio da; Andreo,Nayara; Tarsitano,Marina Avena; Stivaletti,Evelyn Leticia Tazima.
The objective of this study was to evaluate the consequences of low or high stress during pre-slaughter handling of pigs on their carcass and meat quality. Forty-four animals of a commercial lineage, with an average weight of 107.23±5.23 kg, were used. At lairage the animals were randomly divided into two groups, the least and the most stressed. At slaughter, during bleeding, blood samples were collected for later cortisol and lactate tests. Forty-five minutes after slaughter the initial pH of th carcasses was measured and samples of the semitendinosus muscle were collected for R-value calculation. After 24 hours of cooling, the final pH was measured, damage scores were assessed and samples of the longissimus dorsi muscle were collected to evaluate drip...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carcass damage score; Cortisol; Lactate; Lipid oxidation; PH; R-value.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982014000700363

Physiological responses of pirarucu (Arapaima gigas) to acute handling stress
Provedor de dados: Acta Amazonica
Autores: Gomes,Levy de Carvalho.
Pirarucu (Arapaima gigas) is an obligatory air-breathing fish from the Amazon basin. Previous study showed that pirarucu juveniles present a latency period in their response to moderate stress (transportation). Therefore the objective of this study was to verify the effects of a prolonged air exposure stress in lactate, glucose, cortisol, haematocrit, haemoglobin, and liver glycogen in pirarucu. Thirty-six fish were handled by netting and subjected to air exposure for 75-min. Six fish were sampled before handling and at 0, 6, 24, 48, and 96h after handling. Fish cortisol, lactate and haematocrit rose after handling, returning to previous unstressed values on the following sampling (6h after handling). Glucose increased significantly after handling and that...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pirarucu; Stress; Air exposure; Glycogen; Cortisol; Glucose; Lactate; Haematocrit.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672007000400019

Effect of density of fingerling and juvenile pirarucu during transportation on water quality and physiological parameters
Provedor de dados: Acta Amazonica
Autores: LIMA,Adriana Ferreira; OLIVEIRA,Hyago Jovane Borges de; PEREIRA,André Silvério; SAKAMOTO,Silmara Sanae.
ABSTRACT We assessed the effect of stocking density on physiological parameters (blood lactate, glucose, cortisol, hematocrit), water quality (temperature, dissolved oxygen, pH, unionized ammonia, carbon dioxide), and survival during the transportation of fingerling (24.5 ± 4.7 g) and juvenile (615.8 ± 122.2 g) pirarucu (Arapaima gigas) for six hours in plastic bags. The tested densities were 65, 80, 95, 110 and 125 g L-1 for fingerlings, and 50, 80, 110, 140 and 170 g L-1 for juveniles (three replicates each). Parameters were measured prior to and immediately after transportation, and at 24 and 96 hours recovery after transportation. No mortality was observed, except for fingerlings (&lt; 3%) at densities of 110 and 125 g L-1 during recovery. All the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arapaima gigas; Closed system; Lactate; Cortisol; Glucose.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672020000300223

Biochemical changes in Salminus brasiliensis due to successive captures and stocking densities - doi: 10.4025/actascibiolsci.v35i1.13055
Provedor de dados: Acta Scientiarum: Biological Sciences
Autores: Braun, Neiva; Universidade Federal de Santa Catarina; Lima, Ronaldo Lima de; Universidade Federal de Santa Catarina; Baldisserotto, Bernardo; Universidade Federal de Santa Maria; Dafre, Alcir Luiz; Universidade Federal de Santa Catarina; Nuñer, Alex Pires de Oliveira; Universidade Federal de Santa Catarina.
This study evaluated the biochemical changes associated to successive captures of Salminus brasiliensis reared at different stocking densities. The experiment was conducted in tanks with a capacity of  1,000 L, connected to a recirculating system with temperature control and continuous aeration. Fish were stocked at densities of 30, 150 and 300 fish m-3 and the successive catches were applied at the end of the experimental period of 80 days. The biochemical changes were evaluated at the end of the trial through the parameters: hematocrit, hemoglobin, glucose and lactate in plasma and Na+, K+ and Cl- and Ca2+ in the gills. The concentration of glucose increased with the increase of stocking density as also registered for lactate concentration, except for...
Palavras-chave: Zoologia; Fisiologia; Bioquímica dourado; Hematocrit; Hemoglobin; Glucose; Lactate; Ions.
Ano: 2012
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/13055

Low dissolved oxygen levels increase stress in piava (Megaleporinus obtusidens): iono-regulatory, metabolic and oxidative responses
Provedor de dados: Anais da Academia Brasileira de Ciências
Autores: COPATTI,CARLOS E.; BOLNER,KEIDI C.S.; LONDERO,ÉRIKA P.; ROSSO,FELIPE L. DE; PAVANATO,MARIA A.; BALDISSEROTTO,BERNARDO.
Abstract: The aquatic environment presents daily and/or seasonal variations in dissolved oxygen (DO) levels. Piava faces different DO levels in the water due to its distributional characteristics. The goal of this study was to describe the effects of low DO levels on plasma ion, biochemical and oxidative variables in piava juveniles. Fish were exposed to different DO levels, including 1.0, 2.0, 3.0, 4.0 and 5.0 mg L-1 of DO for 96 h, after which blood and tissue samples (liver, kidney, gill and muscle) were collected. The decrease in DO levels decreased plasma Na+, Cl-, K+ and NH3 levels as well as protein and glycogen levels in the liver, kidney and muscle; increased Na+/K+-ATPase activity in the gills and kidney as well as glucose and ammonia levels in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Iono-regulatory; Glucose; Lactate; Na+; K+-ATPase activity; Oxidative stress.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000500858

Evaluation of anaerobic threshold in non-pregnant and pregnant rats
Provedor de dados: Anais da Academia Brasileira de Ciências
Autores: NETTO,ALINE OLIVEIRA; MACEDO,NATHÁLIA C.D.; GALLEGO,FRANCIANE Q.; SINZATO,YURI K.; VOLPATO,GUSTAVO T.; DAMASCENO,DÉBORA C.
ABSTRACT Several studies present different methodologies and results about intensity exercise, and many of them are performed in male rats. However, the impact of different type, intensity, frequency and duration of exercise on female rats needs more investigation. From the analysis of blood lactate concentration during lactate minimum test (LacMin) in the swimming exercise, the anaerobic threshold (AT) was identified, which parameter is defined as the transition point between aerobic and anaerobic metabolism. LacMin test is considered a good indicator of aerobic conditioning and has been used in prescription of training in different exercise modalities. However, there is no evidence of LacMin test in female rats. The objective was to determine AT in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Exercise; Swimming; Anaerobic threshold; Lactate; Pregnancy; Rats.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000602749

Blood lactate threshold reflects glucose responses in horses submitted to incremental exercise test
Provedor de dados: Arquivo Brasileiro de Medicina Veterinária e Zootecnia
Autores: Ferraz,G.C.; D’Angelis,F.H.F.; Teixeira-Neto,A.R.; Freitas,E.V.V.; Lacerda-Neto,J.C.; Queiroz-Neto,A.
Determinou-se, em eqüinos, o efeito do treinamento sobre as concentrações sangüíneas de lactato e plasmáticas de glicose durante exercício de intensidade progressiva em esteira rolante. Demonstrou-se que o treinamento aeróbico causou diminuição da concentração máxima de lactato e que o limiar de lactato corresponde ao ponto de inflexão da curva de glicose plasmática, confirmando esse parâmetro como indicador da capacidade aeróbica de cavalos.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Horse; Aerobic training; Lactate; Glucose; Performance.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352008000100035

Evaluation of microorganisms with sulfidogenic metabolic potential under anaerobic conditions
Provedor de dados: Brazilian Archives of Biology and Technology
Autores: Sakamoto,Isabel Kimiko; Maintinguer,Sandra Imaculada; Hirasawa,Julia Sumiko; Adorno,Maria Angela Tallarico; Varesche,Maria Bernadete Amâncio.
The aim of this work was to identify groups of microorganisms that are capable of degrading organic matter utilizing sulfate as an electron acceptor. The assay applied for this purpose consisted of running batch reactors and monitoring lactate consumption, sulfate reduction and sulfide production. A portion of the lactate added to the batch reactors was consumed, and the remainder was converted into acetic, propionic and butyric acid after 111 hours of operation These results indicate the presence of sulfate-reducing bacteria (SRB) catalyzing both complete and incomplete oxidation of organic substrates. The sulfate removal efficiency was 49.5% after 1335 hours of operation under an initial sulfate concentration of 1123 mg/L. The SRB concentrations...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sulfate-reducing bacteria; Lactate; Most Probable Number; Organic acids.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132012000500018

Lactate-upregulation of lactate oxidation complex-related genes is blunted in left ventricle of myocardial infarcted rats
Provedor de dados: Brazilian Journal of Medical and Biological Research
Autores: Gabriel-Costa,D.; Cunha,T.F.; Paixão,N.A.; Fortunato,R.S.; Rego-Monteiro,I.C.C.; Barreto-Chaves,M.L.M.; Brum,P.C.
Lactate modulates the expression of lactate oxidation complex (LOC)-related genes and cardiac blood flow under physiological conditions, but its modulatory role remains to be elucidated regarding pathological cardiac stress. The present study evaluated the effect of lactate on LOC-related genes expression and hemodynamics of hearts submitted to myocardial infarction (MI). Four weeks after MI or sham operation, isolated hearts of male Wistar rats were perfused for 60 min with Na+-lactate (20 mM). As expected, MI reduced cardiac contractility and relaxation with no changes in perfusion. The impaired cardiac hemodynamics were associated with increased reactive oxygen species (ROS) levels (Sham: 19.3±0.5 vs MI: 23.8±0.3 µM), NADPH oxidase (NOX) activity (Sham:...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lactate; Lactate oxidation complex; Myocardial infarction; Gene expression; Perfusion pressure; Oxidative stress.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2018001100605

Effect of age and gender on sweat lactate and ammonia concentrations during exercise in the heat
Provedor de dados: Brazilian Journal of Medical and Biological Research
Autores: Meyer,F.; Laitano,O.; Bar-Or,O.; McDougall,D.; Heigenhauser,G.J.F.
The dependence of sweat composition and acidity on sweating rate (SR) suggests that the lower SR in children compared to adults may be accompanied by a higher level of sweat lactate (Lac-) and ammonia (NH3) and a lower sweat pH. Four groups (15 girls, 18 boys, 8 women, 8 men) cycled in the heat (42ºC, 20% relative humidity) at 50% VO2max for two 20-min bouts with a 10-min rest before bout 1 and between bouts. Sweat was collected into plastic bags attached to the subject's lower back. During bout 1, sweat from girls and boys had higher Lac- concentrations (23.6 ± 1.2 and 21.2 ± 1.7 mM; P &lt; 0.05) than sweat from women and men (18.2 ± 1.9 and 14.8 ± 1.6 mM, respectively), but Lac- was weakly associated with SR (P &gt; 0.05; r = -0.27). Sweat Lac-...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sweat pH; Electrolytes; Ammonia; Lactate.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2007000100017

Effects of caffeine on time to exhaustion in exercise performed below and above the anaerobic threshold
Provedor de dados: Brazilian Journal of Medical and Biological Research
Autores: Denadai,B.S.; Denadai,M.L.D.R.
Controversy still exists concerning the potential ergogenic benefit of caffeine (CAF) for exercise performance. The purpose of this study was to compare the effects of CAF ingestion on endurance performance during exercise on a bicycle ergometer at two different intensities, i.e., approximately 10% below and 10% above the anaerobic threshold (AT). Eight untrained males, non-regular consumers of CAF, participated in this study. AT, defined as the intensity (watts) corresponding to a lactate concentration of 4 mM, was determined during an incremental exercise test from rest to exhaustion on an electrically braked cycle ergometer. On the basis of these measurements, the subjects were asked to cycle until exhaustion at two different intensities, i.e.,...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Caffeine; Anaerobic threshold; Endurance; Lactate; Perceived exertion.
Ano: 1998
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1998000400017

Ingestion of a moderate dose of alcohol enhances physical exercise-induced changes in blood lactate concentration
Provedor de dados: Brazilian Journal of Medical and Biological Research
Autores: Teixeira-Coelho,F.; Santos,D.F.C.; Santos,G.A.; Sousa,T.F.; Moreira,S.R.; Souza,M.V.C.; Wanner,S.P.
The consumption of alcoholic beverages influences carbohydrate and lipid metabolism, although it is not yet clear whether metabolism during physical exercise at different intensities is also affected. This was the objective of the present study. Eight young and healthy volunteers performed a treadmill test to identify the running speed corresponding to a lactate concentration of 4 mM (S4mM). At least 48 h later, they were subjected to two experimental trials (non-alcohol or alcohol) in which they performed two 1-km running sessions at the following intensities: 1) S4mM; 2) 15% above S4mM. In both trials, blood lactate, triglycerides, and glucose concentrations were measured before and after exercise. The acute alcohol intake increased triglycerides, but...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Endurance; Ethanol; Glucose; Lactate; Metabolism; Treadmill running.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2020000400601

Distance exercised during submaximal training on race winnings for Thoroughbred racehorses
Provedor de dados: Ciência Rural
Autores: Berkman,Carolina; Teixeira,Luisa Gouvea; Pereira,Marsel Carvalho; Sampaio,Rita de Cássia de Lima; Bernardi,Nara Saraiva; Lacerda Neto,José Correia de; Queiroz Neto,Antonio de; Ferraz,Guilherme de Camargo.
Evaluations of the physical fitness of Thoroughbred racehorses have been correlated with race earnings, but few reports exist about the influence of the distance exercised during training on both physical conditioning indices and financial productivity. During one training season sixteen claiming Thoroughbred horses were subjected to submaximal training and monitored by a global positioning system (GPS) coupled to a heart rate monitor. After initial and single monitoring, the horses were distributed into two groups of eight individuals each; one group exercised short distances (SD) between 1600 and 1900m, while the other exercised long distances (LD) between 2000 and 2350m. The duration (min) and mean and maximal velocities (ms-1)attained during each...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Horse; Distance exercised; Heart rate; Lactate; Race performance; Race earnings.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015000701268

Exercise training session-induced metabolic acidosis in barrel racing horses
Provedor de dados: Ciência Rural
Autores: Gomes,Cláudio Luís Nina; Alves,Andressa Mendes; Ribeiro Filho,José Dantas; Moraes Junior,Felipe de Jesus; Chaves,Ricardo de Macedo; Aranha,Rosany Maria Cunha; Fucuta,Rodrigo Santos; Ribeiro,Bruna Maria.
ABSTRACT: In horses, acid-base balance disorders are common after intense exercise, with metabolic acidosis being the most common after high intensity and short duration exercise. Understanding the processes that cause them is fundamental for procedures, which aimed to improve the physical fitness of horses for athletic purposes, with fewer changes in homeostasis. The present study assessed the effect of barrel racing on acid base balance in Quarter Horse, at the following times: T0 - immediately before training; T1 - immediately after the end of the second course; T2 - one hour after the end of the second course. In T1, there was decrease (P&lt;0.05) in the pH, HCO3 -, pCO2, cBase, tCO2 and strong ion difference concentrations, while the plasma lactate...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Horse; Exercise; Acidosis; Lactate; Barrel racing.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782020000500601

Long-term creatine supplementation improves the aerobic capacity of horses
Provedor de dados: Ciência Rural
Autores: Ferraz,Guilherme de Camargo; Teixeira-Neto,Antônio Raphael; D’Angelis,Flora Helena de Freitas; Lacerda-Neto,José Corrêa de; Queiroz-Neto,Antonio de.
The aim of the present study was to investigate the effect of long-term oral supplementation of creatine on the physiological responses to aerobic training. Twelve purebred Arabian horses were submitted to aerobic training for 90 days, with and without creatine supplementation which consisted of the daily administration of 75g of creatine monohydrate mixed into the ration for 90 days of training. Physical conditioning was conducted on a high performance treadmill and training intensity was stipulated by calculating the V4 (velocity at which blood lactate reaches 4mmol L-1) determined monthly for each animal. The individual intensity of physical force at 80% of aerobic threshold was established. An incremental exercise test was used to set the individual...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Equine; Creatine; Lactate; Hematology; Athletic performance.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782006000200023