• Anon (1999) SAS User's Guide: Statistics (Version 8.0 Ed.). SAS Inst. Inc., Cary, North Carolina.
  • Denoix, J.D. (1999) Spinal biomechanics and functional anatomy. Vet. Clin. N. Am.: Equine Pract. 15, 2760.
  • Dobec, R.L., Borger, M.L. and Foye, D.B. (2000) Correlation of real-time ultrasonic measurement of longissimus muscle area of thoroughbred horses with lifetime earnings and average earnings per win. J. anim. Sci. 78, Suppl. 1) 47.
  • Freeman, D.W., Potter, G.D., Schelling, G.T. and Kreider, J.L. (1988) Nitrogen metabolism in mature horses at varying levels of work. J. anim. Sci. 66, 407412.
  • Gottlieb, M., Essen-Gustavsson, B., Lindholm, A. and Persson, S.G.B. (1986) Cardio-respiratory and muscle metabolic responses to draught work on a treadmill in Standardbred horses. In: Equine Exercise Physiology 2, Eds: J.R.Gilespie and N.ERobinson, ICEEP Publications, San Diego, California. pp 384392.
  • Heck, R.W., McKeever, K.H., Always, S.E., Auge, W.K., Whitehead, R., Bertone, A.L. and Lombardo, J.A. (1996) Resistance training-induced increases in muscle mass and performance in ponies. Med. Sci. sports Exerc. 28, 877883.
  • Henneke, D.R., Potter, D.G. and Kreider, J.L. (1981) A condition score relationship to body fat content of mares during gestation and lactation. In: Proceedings of the 7th Equine Nutrition and Physiology Society. Warrenton, Virginia.
  • Khumsap, S., Clayton, H.M. and Lanovaz, J.L. (2001) Effect of walking velocity on hind limb kinetics during stance in normal horses. Equine vet. J., Suppl. 33, 2126.
  • McMann, J.S., Heird, J.C., Ramsey, C.B. and Long, R.A. (1988) Skeletal bone and muscle proportionality in small and large framed horses of different muscle thickness. J. equine vet. Sci. 8, 255261.
  • Myles, W.S. and Saunders, P.L. (1979) The physiological cost of carrying light and heavy loads. Eur. J. appl. Physiol. 42, 125131.
  • Anon (1989) Nutrient Requirements of Horses, National Research Council, National Academy Press, Washington, DC.
  • Saastamoinen, M.T. and Koskinen E. (1993) Influence of quality of dietary protein supplement and anabolic steroids on muscular and skeletal growth of foals. Anim. Prod. 56, 135144.
  • Sack, W.O. (1992) Pelvis. In: Rooney's Guide to the Dissection of the Horse. 6th edn. Veterinary Textbooks, Ithaca, New York. pp 5280.
  • Starkey, D.B., Pollock, M.L., Ishida, Y., Welsh, M.A., Brechue, W.F., Graves, J.E. and Feigenbaum, M.S. (1996) Effect of resistance training volume on strength and muscle thickness. Med. Sci. sports Exerc. 28, 13111320.
  • Wall, L.H., Potter, G.D., Gibbs, P.G. and Brumbaugh, G.W. (1998) Growth of yearling fillies fed alfalfa or soybean meal. J. equine vet. Sci. 18, 266269.
  • Weiss, L.W., Coney, H.D. and Clark, F.C. (2000) Gross measures of exercise-induced muscular hypertrophy. J. Orthop. sports Phys. Ther. 30, 143148.
  • Wentink, G.H. (1978). Biokinetical analysis of the movements of the pelvic limb of the horse and the role of the muscles in the walk and the trot. Anat. Embryol. 152, 261272.
  • Wickler, S.J., Hoyt, D.F., Cogger, E.A. and Hall, K.M. (2001) Effect of load on preferred speed and cost of transport. J. appl. Physiol. 90, 15481551.
  • Young, A., Stokes, M. and Crowe, M. (1984) Size and strength of the quadriceps muscles of old and young women. Eur. J. clin. Invest. 14, 2827.
  • Young, A., Stokes, M. and Crowe, M. (1985) Size and strength of the quadriceps muscles of old and young men. Clin. Physiol. 5, 14554.