Blood lactate threshold reflects glucose responses in horses submitted to incremental exercise test

Ferraz, Guilherme de Camargo; D’Angelis, Flora H.F.; Neto, Antônio Raphael Teixeira; Freitas, Eduardo Villela Villaça; Neto, J. C. Lacerda; Queiroz-Neto, A.

doi:10.1590/s0102-09352008000100035

Cited by 30 publications

(27 citation statements)

References 10 publications

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“…During exercise, lactate increases in the blood stream once the production exceeds its utilization and elimination (FERRAZ et al, 2008). The lactatemia observed in the present study was lower than the concentration found by MUKAI et al (2007), who evaluated exercise intensity in simulated races of 1200m on a sandy track with mean velocities of 15m s -1 and lactatemia of 22.5±0.6mmol L -1 .…”

Section: Discussioncontrasting

confidence: 80%

“…Similarly to the present study, CYWINSKA et al (2011) reported that race horses subjected to submaximal exercise had lactatemia between 3.86 to 6.68 mmol L -1 . Some intrinsic factors can interfere with the lactate production, such as the removal capacity related to the total muscle mass, extent of local blood flow, quantity of capillaries, oxidative capacity of active and inactive muscles, and the level of gluconeogenesis (SIMÕES et al, 1999;FERRAZ et al, 2008).…”

Section: Discussionmentioning

confidence: 99%

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Distance exercised during submaximal training on race winnings for Thoroughbred racehorses

et al. 2015

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Section: Discussioncontrasting

confidence: 80%

Section: Discussionmentioning

confidence: 99%

Distance exercised during submaximal training on race winnings for Thoroughbred racehorses

et al. 2015

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“…Similar results were found by studies assessing endurance equines (HESS et al, 2006;SAMPIERI et al, 2006;FERRAZ et al, 2008;VIU, RAINGER;HODGSON, 2010) and race equines (EVANS et al, 1995;BAYLY et al, 2006;BRONSART;SIDES;BAYLY, 2009;MUKAI et al, 2010). According to Viu, Rainger and Hodgson (2010), t he ch an ges i n bl ood pH a nd pl asma l a ct at e concentration in equines are more intense in high-speed exercises (racing) when compared to moderate-speed exercises (endurance).…”

Section: Resultssupporting

confidence: 65%

Venous hemogasometry and blood electrolytes in Mangalarga Marchador mares submitted to aerobic training

et al. 2013

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The Mangalarga Marchador (MM) breed, valued for its marcha pace, has been excelling in functional activities such as marcha course. Considering the lack of information about sports physiology of the marcha horses, the development of training protocols and physical testing becomes essential and, in this context, the concentrations of blood gases and electrolytes provide additional information for the monitoring of metabolic changes induced by exercise. The goal of the study was to assess the hemogasometric responses and blood electrolyte concentration in MM mares during maximal effort treadmill tests carried out before and after training (trial 1) and between a maximal effort treadmill test and an incremental field test (trial 2). The trials assessed plasma lactate concentration, blood pH, oxygen and carbon dioxide blood pressures, and blood concentrations of the ions bicarbonate, sodium (Na, and calcium (Ca ++ ). The study followed a randomized block in a split-plot design. In the first trial, the distances walked by the equines in the tests before and after training caused decrease (p<0.05) in pH and Ca ++ concentration and increase in the concentrations of K + and Na + . In the second trial, the influence of the type of test and the ambient temperature caused decrease (p<0.05) in pH and increase in the concentrations of K + and Ca ++ . After training, MM mares had greater changes in pH and electrolyte concentrations.Index terms: Equine, bicarbonate, carbon dioxide, oxygen. RESUMOA raça Mangalarga Marchador (MM), valorizada por apresentar como andamento a marcha, vem se destacando nas atividades funcionais, como as provas de marcha. Considerando a escassez de informações sobre a fisiologia esportiva dos equinos marchadores, a elaboração de protocolos de treinamento e de testes físicos torna-se fundamental e, nesse contexto, as concentrações dos gases e eletrólitos sanguíneos constituem informações adicionais para o monitoramento das alterações metabólicas induzidas pelo exercício. Objetivou-se avaliar as respostas hemogasométricas e a concentração sanguínea de eletrólitos de éguas MM, durante teste de esforço máximo em esteira, realizado antes e após o treinamento -ensaio 1 e entre um teste de esforço máximo em esteira e um teste de intensidade crescente a campo -ensaio 2. Foram avaliadas a concentração plasmática de lactato, o pH sanguíneo, as pressões sanguíneas de oxigênio e de dióxido de carbono, as concentrações sanguíneas dos íons bicarbonato, sódio (Na

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“…The adaptations found in the present study were also observed in other experimental models. Ferraz et al (2008) analysed the effects of an aerobic training on lactate and glucose blood levels in equines and found reduced blood lactate after training. The above mentioned authors also concluded that LT is predictor of aerobic capacity, and found a association of the lactate inflection point with glucose dynamics during a IET.…”

Section: Discussionmentioning

confidence: 99%

Increased lactate threshold after five weeks of treadmill aerobic training in rats

Vieira

Luís

2014

Braz. J. Biol.

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The aim of the present study was to analyse the lactate threshold (LT) changes in rats submitted to an aerobic treadmilltraining programme. Twenty-five Wistar rats were divided into two groups: a sedentary control group (CG), and a trained group (TG) submitted to an aerobic training during 5 weeks. All the animals were submitted to an incremental treadmill exercise test in order to determine LT. There was an increase in the maximum running speed in the TG (from 32.25 ± 1.27 to 47.75 ± 3.13 m.min -1 -p = 0.001), and running speed at LT (from 26.21 ± 1.15 to 35.30 ± 2.24 m.min-p = 0.004), a part from the reduction in blood lactate at LT. LT can be determined in rats, and aerobic training induced positive oxidative physiological adaptations in the animals.Keywords: anaerobic threshold, running speed, blood lactate, exercise. Aumento do limiar de lactato após cinco semanas de treinamento aeróbio em esteira em ratosResumo O objetivo do presente estudo foi analisar as mudanças no limiar de lactato (LL) em ratos submetidos a um programa de treinamento aeróbio em esteira. Vinte e cinco ratos Wistar foram divididos em dois grupos: um grupo controle sedentário (CG), e um grupo treinado (GT) submetido a um treinamento aeróbio durante 5 semanas. Todos os animais foram submetidos a um teste de exercício incremental em esteira, a fim de determinar o LL. Houve um aumento na velocidade máxima de corrida no GT (de 32,25 ± 1,27 para 47,75 ± 3,13 m.min -1 -p = 0,001), e velocidade de corrida no LL (de 26,21 ± 1,15 para 35,30 ± 2,24 m.min -1 -p = 0,004), além da redução na concentração de lactato no LL. O LL pode ser determinado em ratos e o treinamento aeróbio induziu a adaptações fisiológicas oxidativas positivas nos animais.Palavras-chave: limiar anaeróbio, velocidade de execução, lactato sanguíneo, exercício.

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Blood lactate threshold reflects glucose responses in horses submitted to incremental exercise test

Cited by 30 publications

References 10 publications

Distance exercised during submaximal training on race winnings for Thoroughbred racehorses

Distance exercised during submaximal training on race winnings for Thoroughbred racehorses

Venous hemogasometry and blood electrolytes in Mangalarga Marchador mares submitted to aerobic training

Increased lactate threshold after five weeks of treadmill aerobic training in rats

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