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A decision-tree-based model for evaluating the thermal comfort of horses. Repositório Alice
MAIA, A. P. de; OLIVEIRA, S. R. de M.; MOURA, D. J. de; SARUBBI, J.; VERCELLINO, R. do A.; MEDEIROS, B. B. L.; GRISKA, P. R..
ABSTRACT: Thermal comfort is of great importance in preserving body temperature homeostasis during thermal stress conditions. Although the thermal comfort of horses has been widely studied, there is no report of its relationship with surface temperature (TS). This study aimed to assess the potential of data mining techniques as a tool to associate surface temperature with thermal comfort of horses. TS was obtained using infrared thermography image processing. Physiological and environmental variables were used to defi ne the predicted class, which classifi ed thermal comfort as ?comfort? and ?discomfort?. The variables of armpit, croup, breast and groin TS of horses and the predicted classes were then subjected to a machine learning process. All variables...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Mineração de dados; Conforto térmico de cavalos; Termorregulação; Termografia; Surface temperature; Thermoregulation.
Ano: 2013 URL: http://www.alice.cnptia.embrapa.br/handle/doc/978404
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A decision-tree-based model for evaluating the thermal comfort of horses Scientia Agricola
Maia,Ana Paula de Assis; Oliveira,Stanley Robson de Medeiros; Moura,Daniella Jorge de; Sarubbi,Juliana; Vercellino,Rimena do Amaral; Medeiros,Brenda Batista Lemos; Griska,Paulo Roberto.
Thermal comfort is of great importance in preserving body temperature homeostasis during thermal stress conditions. Although the thermal comfort of horses has been widely studied, there is no report of its relationship with surface temperature (T S). This study aimed to assess the potential of data mining techniques as a tool to associate surface temperature with thermal comfort of horses. T S was obtained using infrared thermography image processing. Physiological and environmental variables were used to define the predicted class, which classified thermal comfort as "comfort" and "discomfort". The variables of armpit, croup, breast and groin T S of horses and the predicted classes were then subjected to a machine learning process. All variables in the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Feature selection methods; Data mining; Surface temperature; Infrared thermography; Thermoregulation.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162013000600001
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A influência dos ritmos circadianos no metabolismo da serpente Bothrops jararaca (Serpentes, Viperidae) - DOI: 10.4025/actascibiolsci.v30i3.5030 Biological Sciences
Cruz, José Geraldo Pereira da; FURB.
A atividade termorreguladora conduziu a uma busca extensiva para o entendimento das correlações entre as variáveis fisiológicas, incluindo as funções metabólicas e a temperatura corporal. Frequentes observações mostram que algumas serpentes podem se aquecer, sendo este aumento de temperatura independente da temperatura ambiente, indicando a termorregulação bem sucedida. Bothrops jararaca foram expostas a dois ambientes com diferentes temperaturas (20 e 30oC) durante três semanas, sendo mensuradas a temperatura corporal e o consumo de oxigênio. O aumento da temperatura corporal e consumo de oxigênio de Bothrops jararaca ocorreram na fase de escuro do fotoperíodo, consistente para espécies noturnas. Entretanto, antecedendo a fase de escuro, as serpentes em...
Palavras-chave: 2.00.00.00-6 Ciências Biológicas consumo de oxigênio; Répteis; Termorregulação oxygen consumption; Reptile; Thermoregulation.
Ano: 2008 URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/5030
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A insulação escrotal na fertilidade de caprinos adultos. Repositório Alice
SANTOS, D. O.; SIMPLÍCIO, A. A..
bitstream/item/183284/1/CNPC-1993-A-insulacao.pdf
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Insulação escrotal; Scrotal insulation; Brasil; Região Nordeste; Semiárido; Circunferência escrotal; Biometria testicular; Degeneração seminal; Morfologia espermática; Seminal degeneration; Caprino; Testículo; Termorregulação; Bode; Sêmen; Qualidade; Espermatozóide; Animal morphology; Goats; Thermoregulation; Sperm motility; Bucks; Semiarid zones; Brazil; Spermatozoa.
Ano: 1993 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1096085
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Adaptive parameters and thermal comfort of postpartum ewes fed on concentrate supplementation in grazing system Animal Sciences
Rocha, Ronne-von Ribeiro da; Universidade Federal do Piauí; Oliveira, Petrônio Batista de; Universidade Federal do Piauí; Nunes, Amaury Guimarães; Universidade Federal do Piauí; Silva, Tairon Pannunzio Dias e; Universidade de São Paulo; Pereira, Alécio Matos; Universidade Federal do Piauí; Torreão, Jacira Neves da Costa; Colégio Técnico de Bom Jesus.
Current analysis evaluated adaptive parameters and thermal comfort of postpartum ewes fed on concentrate supplementation in grazing system. Thirty lactating pluriparous sheep, 16 Santa Inês (SI) and 14 Morada Nova (MN) were used. Physiological parameters such as respiratory rate (RR), heart rate (HR) and rectal temperature (RT) were measured, in that order, with the animals at rest in the morning (6:00-7:00 am) and in the afternoon (1:00-2:00 pm), respectively, every seven days, with 10 samples. A significant effect (p < 0.05) for RR and HR was reported in the strain. Similar behavior was reported for RR between the breeds where MN sheep had high adaptability. Supplementation levels of 0.5 and 1.5% influenced (p < 0.05) RR which was stronger...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Environmental factors; Heat stress; Nutrition; Thermoregulation.
Ano: 2014 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/22823
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Association between the increase in brain temperature and physical performance at different exercise intensities and protocols in a temperate environment BJMBR
Kunstetter,A.C.; Wanner,S.P.; Madeira,L.G.; Wilke,C.F.; Rodrigues,L.O.C.; Lima,N.R.V..
There is evidence that brain temperature (Tbrain) provides a more sensitive index than other core body temperatures in determining physical performance. However, no study has addressed whether the association between performance and increases in Tbrain in a temperate environment is dependent upon exercise intensity, and this was the primary aim of the present study. Adult male Wistar rats were subjected to constant exercise at three different speeds (18, 21, and 24 m/min) until the onset of volitional fatigue. Tbrain was continuously measured by a thermistor inserted through a brain guide cannula. Exercise induced a speed-dependent increase in Tbrain, with the fastest speed associated with a higher rate of Tbrain increase. Rats subjected to constant...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Brain cortex; Fatigue; Hyperthermia; Speed; Thermoregulation; Treadmill running..
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2014000800679
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Avaliacao da eficiencia de metodos de controle termico de Xanthomonas campestris pv. campestris em sementes de couve e sua influencia na germinacao. Repositório Alice
TAVARES, S. C. C. de H.; MARIANO, R. L. R..
bitstream/item/180501/1/Fitopatologia-Brasileirav.13-n.2-p.98-1988.pdf
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Cabbages; Diseases; Controle Térmico; Couve; Doença; Germinação; Infecção; Semente; Xanthomonas Campestris; Germination; Infection; Seeds; Thermoregulation.
Ano: 1988 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/133554
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Behavioral ecology of Heteragrion consors Hagen (Odonata, Megapodagrionidae): a shade-seek Atlantic forest damselfly Rev. Bras. entomol.
Loiola,Geovanni Ribeiro; De Marco,Paulo.
Behavioral ecology of Heteragrion consors Hagen (Odonata: Megapodagrionidae): a shade-seek Atlantic forest damselfly. The intensity of the inter and intra-sexual selection can affect male behavioral traits as territorial fidelity and aggressiveness allowing the existence of different strategies. However, its differential success could be affected by environmental - as the diel variation in temperature - and physiological constrains - as the variation in thermoregulatory abilities. In this context, we present a behavioral analysis of Heteragrion consors (Zygoptera, Megapodagrionidae) trying to characterize its mating system, diel activity pattern, temporal budget, territoriality and reproductive biology. These data were obtained based on field observations...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Mating systems; Reproductive biology; Temporal budget; Thermoregulation; Territoriality.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262011000300010
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Biologia e exigências térmicas do ácaro-vermelho (Tetranychus ludeni Zacher) em folhas de algodoeiro. Repositório Alice
SILVA, C. A. D. da.
O objetivo deste trabalho foi estudar a biologia e as exigências térmicas de Tetranychus ludeni Zacher (Acari: Tetranychidae) em folhas de algodoeiro (Gossypium hirsutum L. r. latifolium (Hutch)). Foram utilizadas câmaras climatizadas, ajustadas nas temperaturas de 20, 23, 25, 28 e 30oC, umidade relativa de 70% e fotófase de 12 horas. Os períodos de desenvolvimento de ovo a adulto variaram de 20,77 (20oC) a 8,50 dias (30oC), em fêmeas, e de 18,83 (20oC) a 7,75 dias (30oC), em machos. As temperaturas-base, estimadas pelo método da intersecção de X, para os períodos de desenvolvimento de ovo-adulto, foram de 14,05oC para fêmeas e 13,91oC para machos, enquanto os valores da constante térmica estimados de acordo com a lei de Réamur foram de 138,34 graus-dia,...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Termorregulação; Temperatura; Gossypium hirsutum; Thermoregulation; Temperature.
Ano: 2002 URL: http://www.alice.cnptia.embrapa.br/handle/doc/107301
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Broiler surface temperature distribution of 42 day old chickens Scientia Agricola
Nääs,Irenilza de Alencar; Romanini,Carlos Eduardo Bites; Neves,Diego Pereira; Nascimento,Guilherme Rodrigues do; Vercellino,Rimena do Amaral.
Broiler chickens in Brazil are generally reared from 1 to 42 days when they are exposed to procedures such as fasting, harvesting, crating and transport to slaughter. Maintaining homeostasis is of great importance for broiler survival under harsh environment especially prior to slaughter. Heat loss varies in the distinct parts of the body during the growth period, and it is related to the air temperature of the environment and to the amount of feather covering. This research aimed to study the surface temperature distribution using infrared thermographic image processing to characterize 42 day old broiler chicken surface temperature prior to slaughter. Broilers were reared for 42 days and prior to harvest and transport to slaughter the infrared surface...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Thermal comfort; Heat loss; Thermoregulation; Infrared thermography.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162010000500001
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Comparison of sweat rate during graded exercise and the local rate induced by pilocarpine BJMBR
Vimieiro-Gomes,A.C.; Magalhães,F.C.; Amorim,F.T.; Machado-Moreira,C.A.; Rosa,M.S.; Lima,N.R.V.; Rodrigues,L.O.C..
Centrally stimulated sweat rate produced by graded exercise until exhaustion was compared to the local sweat rate induced by pilocarpine, often used as a sweating index for healthy individuals. Nine young male volunteers (22 ± 4 years) were studied in temperate environment in two situations: at rest and during progressive exercise with 25 W increases every 2 min until exhaustion, on a cycle ergometer. In both situations, sweating was induced on the right forearm with 5 ml 0.5% pilocarpine hydrochloride applied by iontophoresis (1.5 mA, 5 min), with left forearm used as control. Local sweat rate was measured for 15 min at rest. During exercise, whole-body sweat rate was calculated from the body weight variation. Local sweat rate was measured from the time...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Sweat rate; Graded exercise test; Pilocarpine; Thermoregulation.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2005000700017
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Comportamento termorregulador de cabras Saanen criadas em ambiente tropical suplementadas com selênio orgânico. Repositório Alice
BOMFIM, J. M.; MARTINS, T. P.; PINHEIRO, R. R.; FAÇANHA, D. A. E.; SILVEIRA, R. M. F.; OLIVEIRA, M. C. de; SOUZA, V. de; VASCONCELOS, A. M. de..
Resumo: Objetivou-se, avaliar o comportamento termorregulador de cabras Saanen suplementadas com selênio orgânico na dieta e criadas em ambiente tropical. Foram utilizadas 12 cabras, não prenhes e clinicamente saudáveis; criadas de forma semiextensiva, pela manhã ficavam em pasto nativo e à tarde retornavam para o galpão, permanecendo em baias individuais e recebia concentrado à base de milho e farelo de soja, 250g/animal. Durante 21 dias foram suplementadas com selênio orgânico oferecido na forma de levedura, adicionado ao concentrado de acordo com as recomendações da empresa fornecedora. Foram realizadas aferições a Temperatura Retal, Frequência Respiratória, Temperatura Superficial da pele, nos turnos da manhã e tarde. Os dados meteorológicos foram...
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Raça Saanen; Semiárido; Brasil; Nordeste; Caprino; Cabra leiteira; Termorregulação; Nutrição animal; Suplemento alimentar; Suplemento mineral; Microelemento; Selênio; Antioxidade; Goats; Thermoregulation; Supplementary feeding; Mineral supplements; Trace elements; Selenium; Antioxidants; Semiarid zones; Brazil.
Ano: 2016 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1059793
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Does gestation or feeding affect the body temperature of the golden lancehead, Bothrops insularis (Squamata: Viperidae) under field conditions? Rev. Bras. Zool.
Bovo,Rafael P.; Marques,Otavio A. V.; Andrade,Denis V..
Temperature affects physiological performance in reptiles and, therefore, body temperature (Tb) control is argued to have an important adaptive value. Alterations in Tb due to transient changes in physiological state, as during digestion or gestation, are often linked to the potential benefits of a more precise Tb regulation. However, such thermoregulatory responses in nature remain controversial, particularly for tropical snakes. Herein, we measured Tb of the golden lanceheads, Bothrops insularis (Amaral, 1921), at Queimada Grande Island, southeastern Brazil, to test for alteration in selected body temperatures associated with feeding or gestation. We found no evidence that postprandial or gravid snakes selected for higher Tb indicating that, under...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Digestion; Gravid females; Postprandial thermophilic response; Snake; Thermoregulation; Neotropics.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702010000600020
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Effect of concentrate supplementation and time scales of evaluation on behavioral and physiological responses of pregnant ewes on grazing system Animal Sciences
Silva, Tairon Pannunzio Dias e; Marques, Carlo Aldrovandi Torreão; Torreão, Jacira Neves da Costa; Bezerra, Leílson Rocha; Araujo, Marcos Jácome de; Lima, Lucas Almeida.
This study was realized to evaluate the effect of concentrate supplementation and time scales of evaluation on behavioral and physiological responses of pregnant ewes on grazing system. The experimental design was a randomized 2 x 2 x 3 factorial arrangement (two breeds: Morada and Santa Inês; two concentrate supplementation levels: 0.5 and 1.5% of body weight; and three time scales of evaluation: 10, 20 and 30 minutes) with six replicates per treatment. The physiological parameters were influenced by period of the day and breeds, with higher values in the afternoon to Santa Inês ewes. Also, influence of concentrate supplementation was found between the breeds with greater values in Santa Inês ewes. But, it did not alter the physiological parameters among...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Animal nutrition; Behavior; Native ewes; Semi-arid conditions; Thermoregulation.
Ano: 2016 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/28748
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Effect of Thermal Embryonic Manipulation on the Quality of Male and Female Broiler Meat Submitted to Thermal Stress Pre-Slaughter Rev. Bras. Ciênc. Avic.
Fernandes,JIM; Santos,TC; Kaneko,IN; Horn,D; Leyter,JR; Pasa,CLB.
ABSTRACT Adverse environmental conditions during rearing may negatively affect productivity and meat quality of the modern fast-growing broiler strains. Temperature manipulation during sensitive embryonic development periods may affect broilers' physiological responses to environmental conditions during rearing on commercial farms. The objective of this trial was to evaluate the effect of temperature manipulation during incubation and breeder age on the meat quality of male and female broilers submitted to heat stress during the pre-slaughter period. In this experiment, 1280 broiler chicks were distributed according to a completely randomized experimental design in a 2x2x2 factorial arrangement. Treatments consisted of two breeder ages (30 and 60 weeks),...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Adaptation; Epigenetic; Incubation; Thermoregulation.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000200343
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Effects of thermal environment and supplementation levels on the physiological parameters of moxotó goats in confined and semi-confined rising systems REA
Furtado,Dermeval A.; Gomes,Carlos A. V.; Medeiros,Ariosvaldo N.; Pimenta Filho,Edgard C.; Júnior,Valdi L..
The objective of this work was to determine the effect of environmental variables and supplementation levels on physiological parameters of Moxotó goats in confined and semi-confined rising systems, in the Brazilian semi-arid region. The semi-confined individuals were kept on a grass based diet during the day and arrested in the end of the afternoon. The confined animals were kept in a management center, receiving two diets composed by forage cactus and maniçoba hay into two different levels (0.5 and 1.5% of the body weight). Inside the management center and in the external environment the environmental comfort parameters were set high during the afternoon period characterizing a situation of thermal discomfort for the animals. During the morning the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Thermoregulation; Environmental variables; Native goat race; Semi-arid.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162008000300001
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Energetics, thermoregulation and torpor in the Chilean mouse-opossum Thylamys elegans (Didelphidae) RChHN
Bozinovic,Francisco; RuÍz,Gricelda; CortÉs,Arturo; Rosenmann,Mario.
In this paper we studied the energetic expenditure and thermoregulation of the Chilean mouse-opossum Thylamys elegans (Dielphidae) a nocturnal small marsupial, endemic of southern South America. We studied their standard energetic and determined whether they exhibit shallow daily torpor or deep prolonged torpor as a function of ambient temperature and food availability. Thylamys elegans partially supports the hypothesis that Neotropical marsupials have somewhat a higher basal metabolic rate (BMR) and thermal conductance (Cm) than Australian ones. In fact, BMR was higher but Cm was lower than expected for their body mass. The higher mass-independent BMR of the Chilean mouse-opossum may be explained by its insectivorous food habits and its low Cm by its...
Tipo: Journal article Palavras-chave: Chile; Marsupials; Energetic; Thermoregulation; Facultative torpor.
Ano: 2005 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2005000200003
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Evaluation of covering materials in individual shelters and its effects on physiological responses and performance of dairy calves REA
Fonseca,Patrícia C. de F; Almeida,Eduardo A. de; Passini,Roberta.
In Tropical regions, the animal performance is often affected by climate conditions. This study aimed to evaluate covering materials in individual shelters, normally used to house dairy calves, and its influence on the calves physiology and performance. The design used was completely randomized, with a 2x3 factorial arrangement to compare the averages of 5% through the Tukey's test, i.e., both genders- and three types of covering in the shelters (Z - zinc; AC - asbestos cement; and WPAC - white-painted asbestos cement). Parameters evaluated included daily weight gain (DWG), dry matter intake (DMI), feed conversion (FC), rectal temperature (RT), and respiratory frequency (RF). Results showed significant differences (P < 0.05) among males (1.04kg/day) and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Thermoregulation; Weight gain; Feed conversion.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162012000600005
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Heat Requirements of Two Layer Strains Placed on Different Dates Rev. Bras. Ciênc. Avic.
Gencoglan,S.
ABSTRACT This study was conducted to calculate the heat requirements of Hy-line W-36 and Hy-line W-98 layer chicks placed on different dates, and to select one of these strains based on heat requirements and egg prices. An environmentally-controlled, mechanically-ventilated, and fan and pad-cooled house with a capacity of 94,500 chicks was designed. Based on the identification of September as the month with the highest egg prices, placement dates were selected (16th of March, 1st of April, 16th of April, 23rd of April and 1st of May) to coincide with economic egg weight in that month. The heat requirements for a rearing period of 35days of both evaluated strains starting on the above-mentioned dates were calculated using heat and moisture balance method...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Heat and moisture production; Heat balance; Temperature control; Thermoregulation; Weibull method.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000300471
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Heat storage rate and acute fatigue in rats BJMBR
Rodrigues,L.O.C.; Oliveira,A.; Lima,N.R.V.; Machado-Moreira,C.A..
Thermal environmental stress can anticipate acute fatigue during exercise at a fixed intensity (%VO2max). Controversy exists about whether this anticipation is caused by the absolute internal temperature (Tint, ºC), by the heat storage rate (HSR, cal/min) or by both mechanisms. The aim of the present study was to study acute fatigue (total exercise time, TET) during thermal stress by determining Tint and HSR from abdominal temperature. Thermal environmental stress was controlled in an environmental chamber and determined as wet bulb globe temperature (ºC), with three environmental temperatures being studied: cold (18ºC), thermoneutral (23.1ºC) or hot (29.4ºC). Six untrained male Wistar rats weighing 260-360 g were used. The animals were submitted to...
Tipo: Info:eu-repo/semantics/other Palavras-chave: Thermoregulation; Exercise; Fatigue; Heat storage rate.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2003000100018
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