Effect of prolonged branched-chain amino acid supplementation on metabolic response to anaerobic exercise in standardbreds

Casini, Lucia; Gatta, Domenico; Magni, Livio; Colombani, B.

doi:10.1016/s0737-0806(00)80470-0

Cited by 19 publications

(10 citation statements)

References 11 publications

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“…In this perspective, it differs from studies of Stefanon et al. (2000) and Casini et al. (2000), who just described the effects of the total of BCAA on performance.…”

Section: Discussionmentioning

confidence: 78%

“…Extra BCAA did not improve performance according to Stefanon et al. (2000) and Casini et al. (2000), but this could be simply explained by the focus of those studies on the effects of BCAA as substrate for oxidation.…”

Section: Discussionmentioning

confidence: 93%

“…Branched chain AAs mixtures were given to standardbreds in training (Casini et al., 2000; Stefanon et al., 2000), without clear effects on performance or metabolic parameters. However, these trials were focussed on the value of BCAAs as metabolic fuels and not on AA kinetics and changes in PD or protein synthesis (PS) in the recovery phase.…”

Section: Introductionmentioning

confidence: 99%

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Changes in intramuscular amino acid levels in submaximally exercised horses - a pilot study

Hoven¹,

Bauer²,

Hackl³

et al. 2009

Journal of Animal Physiology and Animal Nutrition

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The time-dependent changes in intramuscular amino acid (AA) levels caused by exercise and by feeding a protein/AA supplement were analysed in nine horses. Horses were submitted to a total of four standardized exercise tests (SETs). Amino acid concentrations were determined prior to, immediately after, 4 and 18 h after exercise. The experiment was subdivided into two consecutive periods of 3 weeks. In each period two SETs were performed. In the second period, horses were given a protein/AA supplement within 1 h after exercise. Significant changes in mean plasma AA levels similar to previous studies were noted to be time-dependent and to be associated with feeding the supplement. The intramuscular concentrations of the free AA in relation to pre-exercise levels showed significant time-dependent changes for alanine, asparagine, aspartate, citrulline, glutamine, glycine, isoleucine, leucine, methionine, serine, taurine, threonine, tyrosine and valine. Feeding the supplement significantly increased the 4 h post-exercise intramuscular concentration of alanine, isoleucine, methionine and tyrosine. At 18 h after exercise, apart from isoleucine and methionine, levels were still increased and also those of asparagine, histidine and valine in relation to none treatment. Hence, it was concluded that AA mixtures administered orally to horses within 1 h after exercise increased intramuscular AA pool.

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“…In this perspective, it differs from studies of Stefanon et al. (2000) and Casini et al. (2000), who just described the effects of the total of BCAA on performance.…”

Section: Discussionmentioning

confidence: 78%

Section: Discussionmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Changes in intramuscular amino acid levels in submaximally exercised horses - a pilot study

Hoven¹,

Bauer²,

Hackl³

et al. 2009

Journal of Animal Physiology and Animal Nutrition

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show abstract

“…Valine, isoleucine, leucine and phenylalanine levels tended to increase (King and Suleiman, 1998). Supplementation of branched‐chain amino acids (BCAA) had no significant effect on the performance of standardbred trotters leading the authors to the conclusion that exercising horses fed a balanced diet require no specific AA supplementation (Casini et al., 2000). However, this study was based on few horses and did not consider any other AA than the BCAA.…”

Section: Introductionmentioning

confidence: 99%

The effects of short intensive exercise on plasma free amino acids in standardbred trotters

Hackl

Hoven

Zickl

et al. 2009

Animal Physiology Nutrition

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The aim of this study was to investigate the effect of short intense exercise on plasma amino acid concentrations in trotters and to test the repeatability of plasma amino acids concentration in samples obtained on two independent days under field conditions. Plasma amino acid concentrations were analysed in blood samples of 36 standardbred trotters before and after intense exercise over a distance of 2000 m. Sampling was repeated in 20 horses after 35 days. Exercise intensity was estimated from post-exercise lactate levels. Horses were divided in two groups according to a cut-off lactate concentration at 15 mmol/l. The plasma concentrations of alanine, aspartate, glutamate, isoleucine, leucine, lysine and taurine increased and arginine, asparagine, citrulline, glutamine, glycine, histidine, methionine, serine, tryptophan and 3-methylhistidine decreased after exercise. Ornithine, threonine, tyrosine, phenylalanine and valine concentrations remained constant. Higher intensity of exercise significantly decreased tryptophan and increased taurine concentrations. Sampling day had a significant effect on the absolute pre- and post-exercise amino acid concentrations. Exercise had a significant influence on the concentrations of most plasma amino acids in trotters. These changes could reflect shifts between the free amino acid compartments, but there were also some indications for muscle catabolism. The amino acid supply of sporting horses could be of specific significance for maintaining muscle integrity and for the improvement of post-exercise recovery of competition horses.

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“…During standard exercise test on Quarter Horses, plasma alanine and glutamine increased, irrespectively to the dietary protein level (Miller and Lawrence, 1988). A prolonged branched chain amino acids (BCAA) supplementation was not found to be effective in the amelioration of the performances of Standardbreds (Casini et al., 2000). In a study by Vervuert et al.…”

Section: Introductionmentioning

confidence: 99%

Amino acid concentrations in blood serum of horses performing long lasting low‐intensity exercise

Bergero

Assenza

Schiavone

et al. 2005

Animal Physiology Nutrition

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The aim of this work was to evaluate the changes in the concentrations, after two rides different for distance covered, of different amino acids in endurance horses. Blood samples have been collected from horses just before the start, at the top of a steep slope (819 m difference in height) and just at the end of a 32-km endurance ride. A second group, competing in a 72 km endurance ride, has also been sampled immediately before and after the race. In serum samples, the concentrations of alanine, arginine, asparagine, glycine, isoleucine, histidine, leucine, lysine, methionine, ornithine, phenylalanine, tryptophan, tyrosine and valine have been measured by high-performance liquid chromatography (HPLC). anova and t-test have been used to study the differences in the concentrations of the amino acids. The pre-ride concentrations of the free amino acids were different between the two races, except for methionine and leucine. Differences between start and end race have been found for both groups for all the considered parameters except asparagine, isoleucine, leucine and lysine for the 72 km ride. Increases have been recorded for the shorter and decreases for the longer ride in the blood serum concentrations. Significant increases have also been found between the starting sampling and the second, at the top of the slope, only for alanine, arginine, asparagines, phenylalanine and lysine. The ride length has a significant impact on blood serum amino acids mobilization and uptake; in the shorter race the increases stand only for mobilization, whereas in the longer the decrease can be considered the effect of the onset of the amino acids catabolism.

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Effect of prolonged branched-chain amino acid supplementation on metabolic response to anaerobic exercise in standardbreds

Cited by 19 publications

References 11 publications

Changes in intramuscular amino acid levels in submaximally exercised horses - a pilot study

Changes in intramuscular amino acid levels in submaximally exercised horses - a pilot study

The effects of short intensive exercise on plasma free amino acids in standardbred trotters

Amino acid concentrations in blood serum of horses performing long lasting low‐intensity exercise

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