• Atkins, C.E., Curtis, M.B., McGuirk, S.M., Kittleson, M.D., Sato, T. and Snyder, P.S. (1992) The use of echocardiography in determining cardiac output in dogs with normal, low, and high output states: comparison to thermodilution method. Vet. Rod. Ultrasound. 33, 297304.
  • Eaton, M.D., Evans, D.L., Hodgson, R.L. and Rose, R.J. (1995) Maximal accumulated oxygen deficit in Thoroughbred horses. J. appl. Physiol. 78, 15641568.
  • Gauvreau, G.M., Staempfli, H., McCutcheon, L.J., Young, S.S. and McDonnell, W.N. (1995) Comparison of aerobic capacity between racing Standardbred horses. J. appl. Physiol. 78, 14471451.
  • Gross, D.R., Muir, W.W., Pipers, F.S. and Hamlin, R.L. (1974) Reevaluation of the equine heart score. Southwestern Vet. 27, 231233.
  • Harkins, J.D., Beadle, R.E. and Kamerling, S.G. (1993) The correlation of running ability and physiological variables in Thoroughbred racehorses. Equine vet. J. 25, 5360.
  • Illera, J.C. and Illera, M. (1986) Electrocardiography and heart score of horses competing in an endurance ride. Aust. vet. J. 64, 8889.
  • Jones, W.E. (1994) Echocardiography should be more than heart sizing. J. equine vet. Sci. 14, 415417.
  • Leadon, D.P., Cunningham, E.P., Mahon, G.A. and Todd, A.J. (1982) Heart score and performance ability in the United Kingdom. Equine vet. J. 14, 8990.
  • Leadon, D., McAllister, H., Mullins, E. and Osborne, M. (1991) Electrocardiographic and echocardiographic measurements and their relationships in Thoroughbred yearlings to subsequent performance. In: Exercise Physiology 3, Eds: S.G.B.Persson, A.Lindholm and L.B.Jeffcott, ICEEP Publications, Davis, California. pp 2229.
  • Long, K.J., Bonagura, J.D. and Darke, P.G.G. (1992) Standardised imaging technique for guided M-mode and Doppler echocardiography in the horse. Equine vet. J. 24, 226235.
  • Miller, P. (1989) Recording bipolar chest leads with an electrocardiograph. Aust. Equine vet. J. 7, 1719.
  • Moodie, E.W. and Sheard, R.P. (1980) The use of electrocardiography to estimate heart weight and predict performance in the racehorse. Aust. vet. J. 56, 557559.
  • Nielsen, K. and Vibe-Petersen, G. (1980) Relationship between QRS-duration (heart score) and racing performance in trotters. Equine vet. J. 12, 8184.
  • O'Callaghan, M.W. (1985) Comparison of echocardiographic and autopsy measurements of cardiac dimensions in the horse. Equine vet. J. 17, 361368.
  • Page, A., Edmunds, G. and Atwell, R.B. (1993) Echocardiographic values in the greyhound. Aust. vet. J. 70, 361364.
  • Physick-Sheard, P.W. and Hendren, C.M. (1983) Heart score: physiological basis and confounding variables. In: Equine Exercise Physiology, Eds: D.H.Snow, S.G.B.Persson and R.J.Rose, Granta Editions, Cambridge. p 121.
  • Rose, R.J., King, C.M., Evans, D.L., Tyler, C.M. and Hodgson, D.R. (1995) Indices of exercise capacity in horses presented for poor racing performance. Equine vet. J Suppl. 18, 418421.
  • Rose, R.J., Hodgson, D.R., Bayly, W.M. and Gollnick, P.D. (1990) Kinetics of Vo2 and Vco2 in the horse and comparison of five methods for determination of maximum oxygen uptake. Equine vet. J Suppl. 9, 3942.
  • Sampson, S.N., Jacobsen, R.L., Sande, R.D., Susumi, C.J., Larntz, K.J., Tucker, R.L. and Bayly, W.M. (1999) Reproducibility and repeatability of M-mode echocardiographic measurements collected from 25 normal horses. J. equine vet. Sci. 19, 5157.
  • Slater, J.D. and Herrtage, M.E. (1995) Echocardiographic measurements of cardiac dimensions in normal ponies and horses. Equine vet. J Suppl. 19, 2832.
  • Steel, J.D. and Stewart, G.A. (1974) Electrocardiography of the horse and potential performance ability. J. S. Afr. Ass. 45, 263268.
  • Steel, J.D., Beilharz, R.G., Stewart, G.A. and Goddard, M. (1977) The inheritance of heart score in racehorses. Aust. vet. J. 53, 306309.
  • Stewart, G.A. and Steel, J.D. (1970) Electrocardiography and the heart score concept. Proc. Am. Ass. equine Practnrs. 16, 363.