NUTRITION IN SPORT
According to the original formulation of the glucose–alanine cycle, the pyruvate used for alanine production in muscle either wa ...
summary, these data suggest that after consump- tion of protein-containing meals, BCAA and glu- tamate are taken up by muscle an ...
used as a fuel in the gut (Souba 1991) or for gluco- neogenesis in the liver (Ross et al. 1967), and the other half is released ...
ferase reaction towards a new equilibrium with production of a-ketoglutarate and alanine from pyruvate (continuously supplied by ...
glycogen is available and the muscle pyruvate concentration is kept high (Fig. 9.3). However, as activation of the BCKADH comple ...
substantially increase the glycolytic rate during exercise due to the glycogen breakdown defect in muscle and they therefore do ...
anaplerotic reactions are not as effective as the alanine aminotransferase reaction and only allow muscular work at 40–50% of Wm ...
Banister, E.W. & Cameron, B.J. (1990) Exercise-induced hyperammonemia: peripheral and central effects. International Journal ...
Matthews, D.E., Marano, M.A. & Campbell, R.G. (1993) Splanchnic bed utilization of glutamine and glu- tamic acid in humans. ...
Wagenmakers, A.J.M., Van Hall, G. & Saltin, B. (1996a) Excessive muscle proteolysis during one leg exercise is exclusively a ...
Introduction For at least 150 years, scientists have studied fuel use during various types of physical exercise. Over this time, ...
134 nutrition and exercise protein requirements after 1977 (US Food and Nutrition Board 1989). As a great many studies have exam ...
which all amino acids must pass) is indicated by the size and central location of its sphere in Fig. 10.2. Physiologically, ther ...
estimated), and then calculating the difference between the two. Estimating the miscellaneous nitrogen losses is usually appropr ...
have measured a 113% increase in the active muscle urea nitrogen content (268±68 to 570± 89 mg·g–1muscle wet mass) of rodents im ...
1991; Layman et al. 1994) and inversely propor- tional to glycogen availability (Lemon & Mullin 1980; Wagenmakers et al. 199 ...
suggesting that dietary protein needs are ele- vated with both endurance and strength exercise. The data of Gontzea et al. (1974 ...
lower relative exercise intensity, and perhaps as a result, an improved nitrogen status. To examine this possibility, we decided ...
required for nitrogen balance. Finally, inclusion of the sedentary group in this study is note- worthy because any methodologica ...
142 nutrition and exercise recommended intakes of 1.7 and 1.8 g protein · kg–1· day–1, respectively. Moreover, Fern et al. (1991 ...
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