• Alp, P.R., Newsholme, E.A. and Zammit, V.A. (1976) Activities of citrate synthase and NAD linked and NADP linked isocitrate dehydrogenase in muscle from vertebrates and invertebrates. Biochem. J 154, 689700.
  • Bergmeyer, H.U. (1986) Methods of Enzymatic Analysis. Deerfield Beach, Florida, USA. Verlag Chem. International.
  • Bergstrom, J. (1962) Muscle electrolytes in man determined by neutron activation analysis on needle biopsy specimens. A study on normal subjects, kidney patients and patients with chronic diarrhoea. Scand. J. clin. lab. Invest 14, 1110.
  • Carlson, L.A. and Pernow, B. (1959) Studies on blood lipids during exercise. I. Arterial and venous plasma concentrations of unesterified fatty acids. J. lab. clin. Med 58, 833841.
  • Costill, D.L. (1972) Physiology of marathon running. J. Am. med. Ass 221, 10241029.
  • Costill, D.L., Coyle, E., Dalsky, G., Evans, W., Fink, W. and Hoopes, D. (1977) Effects of elevated plasma FFA and insulin on muscle glycogen usage during exercise. J. appl. Physiol 43, 695699.
  • Costill, D.L., Fink, W.J., Getchell, L.H., Ivy, J.L. and Witzmann, F.A. (1979) Lipid metabolism in endurance-trained males and females. J. appl. Physiol 47, 787791.
  • Duren, S.E., Jackson, S.G., Baker, J.P. and Aaron, D.K. (1986) Effect of dietary fat on blood parameters in exercised thoroughbred horses In: Equine Exercise Physiology 2 Eds: J.R.Gillespie and N.E.Robinson ICEEP Publications, Davis, California. pp 674685.
  • Essen, B. and Henriksson, J. (1974) Glycogen content of individual muscle fibres in man. Acta. physiol. Scand 90, 645647.
  • Foster, C.V.L. and Harris, R.C. (1992) Total carnitine content of the middle gluteal muscle of thoroughbred horses: normal values, variability and effect of acute exercise. Equine vet. J 24, 5257.
  • Gollnick, P.D. and Saltin, B. (1988) Fuel for muscular exercise: role of fat In: Exercise, Nutrition and Energy Metabolism Eds: E.S.Horton and R.L.Terjung Macmillan, New York. pp 7288.
  • Heath, E.M., Wilcox, A.R. and Quinn, C.M. (1993) Effects of nicotinic acid on respiratory exchange ratio and substrate levels during exercise. Med. Sci. sports Exer 25, 10181023.
  • Hickson, R.C., Rennie, M.J., Conlee, R.K., Winder, W.W. and Holloszy, J.O. (1977) Effects of increased plasma fatty acids on glycogen utilization and endurance. J. appl Physiol 43, 829833.
  • Ladu, M.J., Kapsas, H. and Palmer, W.K. (1991) Regulation of lipoprotein lipase in muscle and adipose tissue during exercise. J. appl. Physiol 71, 404409.
  • Pagan, J.D., Essen-Gustavsson, B., Lindholm, A. and Thornton, J. (1987) The effect of dietary energy source on exercise performance in Standardbred horses In: Equine Exercise Physiology 2 J.R.Gillespie and N.E.Robinson ICEEP Publications, Davis, California. pp 686700.
  • Ravussin, E., Bogardus, C., Scheidegger, K., La Grange, B., Horton, E.D. and Horton, E.S. (1986) Effect of elevated FFA on carbohydrate and lipid oxidation during prolonged exercise in humans. J. appl. Physiol 60, 893900.
  • Renuka-Prasad, M., Jones, R.M., Young, H.S., Kaplinsky, L.B. and Das, D.K. (1988) Analysis of tissue free fatty acids isolated by aminopropyl bonded-phase columns. J. Chromat 428, 221228.
  • Rose, R., Hodgson, D.R., Bayly, W.M. and Gollnick, P.D. (1987) Kinetics of V̇O2 and V̇CO2 in the horse and comparison of five methods for determination of maximum oxygen uptake In: Equine Exercise Physiology 2 Eds: J.R.Gillespie and N.E.Robinson ICEEP Publications, Davis, California. pp 3942.
  • Snow, D.H. and Guy, P.S. (1976) Percutaneous needle muscle biopsy in the horse. Equine vet. J 8, 150155.
  • Walker, M., Cooper, B.G., Elliott, C., Reed, J.W., Orskov, H. and Albert, K.G.M. (1991) Role of plasma non-esterified fatty acids during and after exercise. Clin. Sci 81, 319325.
  • Watson, T.D.G., Burns, L., Packard, C.J. and Shepherd, J. (1992) Selective measurement of lipoprotein lipase and hepatic lipase in heparinized plasma from horses. Am. J. vet. Res 53, 771775.
  • Woakes, A.J., Butler, P.J. and Snow, D.H. (1987) The measurement of respiratory airflow in exercising horses In: Equine Exercise Physiology 2 Eds: J.R.Gillespie and N.E.Robinson ICEEP Publications, Davis, California. pp 194205.
  • Wolfe, R.R. (1992) Assessment of substrate cycling in humans using tracer methodology In: Energy Metabolism: Tissue Determinants and Cellular Corollaries Eds: J.M.Kinney and H.N.Tucker Raven Press Ltd, New York. pp 495523.