The free amino acid profile in the middle gluteal before and after fatiguing exercise in the horse

Miller-Graber, Peggy A.; Lawrence, L.M.; Kurcz, E; Kane, R. A.; Bump, K.D.; Fisher, M; Smith, J. L.

doi:10.1111/j.2042-3306.1990.tb04249.x

Cited by 23 publications

(23 citation statements)

References 17 publications

(6 reference statements)

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“…The increased alanine and decreased glutamate and aspartate concentrations in muscle after exercise indicates that amino acid metabolism played an important role during this type of work. These changes in amino acid concentrations in muscle agree with earlier studies on horses performing treadmill exercise (Miller‐Graber et al . 1990; Pösö et al .…”

Section: Discussionsupporting

confidence: 91%

“…2006). Most of the increase in plasma amino acid levels is, however, due to exercise and the alterations seen on both diets agree with earlier observations on horses performing intense exercise (Miller‐Graber et al . 1990; Essén‐Gustavsson et al .…”

Section: Discussionsupporting

confidence: 91%

“…However, it has been shown that glutamate concentrations decrease and alanine concentrations increase in muscle after intense exercise in both man (Bergström et al . 1985; Essén‐Gustavsson and Blomstrand 2002) and horses (Miller‐Graber et al . 1990; Pösö et al .…”

Section: Introductionmentioning

confidence: 99%

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Effects of crude protein intake from forage‐only diets on muscle amino acids and glycogen levels in horses in training

Essén‐Gustavsson

Connysson

Jansson

2010

Equine Veterinary Journal

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SummaryReasons for performing study: There is little information about the influence of crude protein (CP) intake on glycogen and free pool amino acid concentrations in the muscle of horses in training. High energy forage-only diets may be an alternative to concentrate rich diets and may provide high levels of CP. Objective: To study the effect of feeding 2 forage-only diets, containing either high or moderate CP concentrations on glycogen and free pool amino acid concentrations in the muscle.

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Section: Discussionsupporting

confidence: 91%

Section: Discussionsupporting

confidence: 91%

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Effects of crude protein intake from forage‐only diets on muscle amino acids and glycogen levels in horses in training

Essén‐Gustavsson

Connysson

Jansson

2010

Equine Veterinary Journal

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“…Furthermore, it is a quantitatively important ammonia acceptor during heavy exercise (Bergstrom et al., 1985). Miller‐Graber et al. (1990) reported that glutamine concentrations remained constant in muscles after fatiguing treadmill exercises.…”

Section: Discussionmentioning

confidence: 98%

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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“…Plasma concentrations of amino acids also decrease during chronic submaximal exercise, which may indicate greater need for protein during exercise (McKeever et al 1986; cited by Custalow, 1991). Other studies have shown an increase in free lysine and phenylalanine concentrations after exercise (Poso et al 1991 ;Miller-Graber et al 1990). As these are essential amino acids not normally catabolized for energy, it indicated that net protein catabolism was taking place.…”

Section: P R O T E I N R E Q U I R E M E N T S a N D M E T A B O L I S Mmentioning

confidence: 90%

A Review of Recent Research on Nutrition and Metabolism in the Athletic Horse

Hiney

Potter

1996

Nutr. Res. Rev.

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The free amino acid profile in the middle gluteal before and after fatiguing exercise in the horse

Cited by 23 publications

References 17 publications

Effects of crude protein intake from forage‐only diets on muscle amino acids and glycogen levels in horses in training

Effects of crude protein intake from forage‐only diets on muscle amino acids and glycogen levels in horses in training

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

A Review of Recent Research on Nutrition and Metabolism in the Athletic Horse

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