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The role of nutritional supplements and feeding strategies in equine athletic performance

Published online by Cambridge University Press:  09 March 2007

Raymond J Geor
Raymond J Geor*
Affiliation:
Department of Animal and Poultry Sciences, Virginia Polytechnic and State University, Blacksburg, VA 24061-0306, USA
*
*Corresponding author: [email protected]
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Abstract

In human and animal nutrition, much interest has been focused on the potential role of dietary supplements in promoting health, athletic performance and disease mitigation. Supplements may include essential nutrients provided in amounts greater than required to prevent a deficiency state, or substances purported to have a role in metabolism or tissue function but that are not recognized as an essential nutrient. This review aims to provide the rationale and scientific evidence for use (or not) of some of the supplements marketed for use in horses, with emphasis on supplements purported to directly boost performance, such as creatine, carnitine and branched-chain amino acids. It also discusses the so-called ‘joint supplements’ (or slow-acting, disease-modifying osteoarthritis agents), such as glucosamine and chondroitin sulphate. The effects of selected feeding strategies on performance, including fat supplementation, are also examined. It is concluded that although the use of nutritional supplements is commonly alleged to boost performance or health in horses, for most, if not all, of these supplements there is little or no scientific evidence of efficacy.

Keywords

horseexercisesupplementsdietary fatergogenic aids
Type
Research Article
Information
Equine and Comparative Exercise Physiology , Volume 3 , Issue 3 , August 2006 , pp. 109 - 119
Copyright
Copyright © Cambridge University Press 2006

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References

1Harris, PA (1999). Review of equine feeding and stable management practices in the UK concentrating on the last decade of the 20th century. Equine Veterinary Journal Supplement 28: 46–54.CrossRefGoogle Scholar
2Wagenmakers, A (1999). Nutritional supplements: effects on exercise performance and metabolism. In: Lamb, D & Murray, R (eds), Perspectives in Exercise Science and Sports Medicine. The Metabolic Basis of Performance in Exercise and Sport (pp. 207–260). Carmel, Indiana: Cooper Publishing.Google Scholar
3Harris, PA and Harris, RC (2005). Ergogenic potential of nutritional strategies and substances in the horse. Livestock Production Systems 95: 147–165.CrossRefGoogle Scholar
4Robertson, RJ (1991). Introductory notes on the validation and application of ergogenics. In: Lamb, D & Williams, M(eds), Perspectives in Exercise Science and Sports Medicine. Ergogenics: enhancement of Performance in Exercise and Sport (pp. 17–22). Camel, Indiana: Brown and Benchmark Press.Google Scholar
5Kronfeld, DS (1996). Dietary fat affects heat production and other variables of equine performance under hot and humid conditions. Equine Veterinary Journal Supplement 22: 24–34.CrossRefGoogle Scholar
6Kronfeld, DS, Custalow, SE, Ferrante, PL, Taylor, LE, Wilson, JA and Tiegs, W (1998). Acid–base responses of fat-adapted horses: relevance to hard work in the heat. Applied Animal Behavior 59: 61–72.CrossRefGoogle Scholar
7Pagan, JD, Geor, RJ, Harris, PA, Hoekstra, K, Gardner, S, Hudson, C and Prince, A (2002). Effects of fat adaptation on glucose kinetics and substrate oxidation during low intensity exercise. Equine Veterinary Journal Supplement 34: 33–38.CrossRefGoogle Scholar
8Dunnett, C, Marlin, DJ and Harris, RC (2002). Effect of dietary lipid on response to exercise: relationship to metabolic adaptation. Equine Veterinary Journal Supplement 34: 75–80.CrossRefGoogle Scholar
9Oldham, SL, Potter, GD, Evans, JW, Smith, SB, Taylor, TS and Barnes, WS (1990). Storage and mobilization of muscle glycogen in exercising horses fed a fat-supplemented diet. Journal of Equine Veterinary Science 10: 353–359.CrossRefGoogle Scholar
10MacLeay, JM, Valberg, SJ, Pagan, JD, Billstrom, A and Roberts, J (2000). Effect of diet and exercise intensity on serum CK activity in Thoroughbreds with recurrent exertional rhabdomyolysis. American Journal of Veterinary Research 61: 1390–1395.CrossRefGoogle Scholar
11Nicol, CJ, Badwell-Waters, AJ, Rice, R, Kelland, A, Wilson, AD and Harris, PA (2005). The effects of diet and weaning method on the behavior of young horses. Applied Animal Behavioral Science 95: 205–221.CrossRefGoogle Scholar
12Orme, CE, Harris, RC, Marlin, DJ and Hurley, JS (1997). Metabolic adaptation to a fat supplemented diet in the Thoroughbred horse. British Journal of Nutrition 78: 443–458.CrossRefGoogle ScholarPubMed
13Burke, LM, Angus, DJ, Cox, GR, Cummings, NK, Febbraio, MA, Gawthron, K, Haley, JA, Minehan, M, Martin, DT and Hargreaves, M (2000). Effects of fat adaptation and carbohydrate restoration on metabolism and performance during prolonged cycling. Journal of Applied Physiology 80: 2413–2421.CrossRefGoogle Scholar
14Burke, LM and Hawley, JA (2002). Effects of short-term fat adaptation on metabolism and performance of prolonged exercise. Medicine and Science in Sports and Exercise 34: 1492–1498.CrossRefGoogle ScholarPubMed
15Helge, JW, Richter, EA and Kiens, B (1996). Interaction of training and diet on metabolism and endurance during exercise in man. Journal of Physiology 492: 293–306.CrossRefGoogle ScholarPubMed
16Burke, LM and Kiens, B (2006). ‘Fat adaptation’ for athletic performance: the nail in the coffin?'. Journal of Applied Physiology 100: 7–8.CrossRefGoogle ScholarPubMed
17Stellingwerff, T, Spriet, LL, Watt, MJ, Kimber, NE, Hargreaves, M, Hawley, JA and Burke, LM (2006). Decreased PDH activation and glycogenolysis during exercise following fat adaptation with carbohydrate restoration. American Journal of Physiology Endocrine Metabolic 290: E380–E388.CrossRefGoogle ScholarPubMed
18Eaton, MD, Hodgson, DR, Evans, DL, Bryden, WL and Rose, RJ (1995). Effect of a diet containing supplemental fat on the capacity for high intensity exercise. Equine Veterinary Journal Supplement 18: 353–356.CrossRefGoogle Scholar
19Harkins, JD, Morris, GS, Tulley, RT, Nelson, AG and Kamerling, SG (1992). Effect of added dietary fat on racing performance in Thoroughbred horses. Journal of Equine Veterinary Science 12: 123–129.CrossRefGoogle Scholar
20Topliff, DR, Potter, GD, Kreider, JL, Dutson, TR and Jessup, GT (1985).. Diet manipulation, muscle glycogen metabolism, and anaerobic work performance in the equine. Proceedings of the 9th Conference of the Equine Nutrition and Physiology Society, pp. 119–124.Google Scholar
21Essen-Gustavsson, B, Blomstrand, E, Karlstrom, K and Persson, SGB (1991). Influence of diet on substrate metabolism during exercise. In: Persson, S, Lindholm, A & Jeffcott, LB(eds), Equine Exercise Physiology 3 (pp. 288–298). Davis, California: ICEEP Publications.Google Scholar
22Pagan, JD, Essen-Gustavsson, B, Lindholm, A and Thornton, J (1987). The effect of dietary energy source on exercise performance in Standardbred horses. In: Robinson, N(ed.), Equine Exercise Physiology 2 (pp. 686–700). Davis, CA: ICEEP Publishing.Google Scholar
23Hyyppä, S, Saastamoinen, M and Pösö, AR (1999). Effect of a post-exercise fat-supplemented diet on muscle glycogen repletion. Equine Veterinary Journal Supplement 30: 493–498.CrossRefGoogle Scholar
24Meyers, MC, Potter, GD, Evans, JW, Greene, LW and Crouse, SF (1989). Physiologic and metabolic responses of exercising horses fed added dietary fat. Journal of Equine Veterinary Science 9: 218–223.CrossRefGoogle Scholar
25Scott, BD, Potter, GD, Greene, LW, Hargis, PS and Anderson, JG (1992). Efficacy of a fat-supplemented diet on muscle glycogen concentration in exercising Thoroughbred horses maintained in various body conditions. Journal of Equine Veterinary Science 12: 109–113.CrossRefGoogle Scholar
26Webb, SP, Potter, GD and Evans, JW (1987). Physiologic and metabolic response of race and cutting horses to added dietary fat. Proceedings of the 10th Conference of the Equine Nutrition and Physiology Society, pp. 115–118.Google Scholar
27Hawley, J, Schabort, EJ and Noakes, TD (1997). Carbohydrate-loading and exercise performance. An update. Sports Medicine 24: 73–81.CrossRefGoogle ScholarPubMed
28Hargreaves, M (1999). Metabolic responses to carbohydrate ingestion: effects on exercise performance. In: Lamb, D & Murray, R(eds), Perspectives in Exercise Science and Sports Medicine. The Metabolic Basis of Performance in Exercise and Sport (pp. 93–124). Carmel, Indiana: Cooper Publishing.Google Scholar
29Bergstrom, J, Hermansen, L, Hultman, E and Saltin, B (1967). Diet, muscle glycogen and physical performance. Acta Physiologica Scandinavica 71: 140–150.CrossRefGoogle ScholarPubMed
30Lacombe, VA, Hinchcliff, KW, Geor, RJ and Baskin, CA (2001). Muscle glycogen depletion and subsequent replenishment affect anaerobic capacity of horses. Journal of Applied Physiology 91: 1782–1790.CrossRefGoogle ScholarPubMed
31Farris, JW, Hinchcliff, KW, McKeever, KH and Lamb, D (1995). Glucose infusions during prolonged exercise in standardbred horses. Equine Veterinary Journal Supplement 18: 357–361.CrossRefGoogle Scholar
32Farris, JW, Hinchcliff, KW, McKeever, KH, Thompson, DL and Lamb, D (1998). Effect of tryptophan and of glucose on exercise capacity of horses. Journal of Applied Physiology 85: 807–816.CrossRefGoogle ScholarPubMed
33Kiens, B (2001). Diet and training in the week before competition. Canadian Journal of Applied Physiology Supplement 26: S56–S63.CrossRefGoogle ScholarPubMed
34Burke, LM (2000). Preparation for competition. In: Burke, L, Deakin, V(eds), Clinical Sports Nutrition (pp. 341–368). Roseville, NSW: McGraw-Hill.Google Scholar
35Hyyppa, S, Rasanen, LA and Pösö, AR (1997). Resynthesis of glycogen in skeletal muscle from Standardbred trotters after repeated bouts of exercise. American Journal of Veterinary Research 58: 162–166.CrossRefGoogle ScholarPubMed
36Lacombe, VA, Hinchcliff, KW, Kohn, CW, Devor, ST and Taylor, LE (2004). Effects of feeding meals with various soluble carbohydrate content on muscle glycogen synthesis after exercise in horses. American Journal of Veterinary Research 65: 916–923.CrossRefGoogle ScholarPubMed
37Snow, DH, Harris, RC, Harman, JC and Marlin, DJ (1987). Glycogen repletion following different diets. In: Robinson, N(ed.), Equine Exercise Physiology 2 (pp. 701–706). Davis, CA: ICEEP Publishing.Google Scholar
38Davie, A, Evans, DL, Hodgson, DR and Rose, RJ (1995). Effects of intravenous dextrose infusion on muscle glycogen resynthesis after intense exercise. Equine Veterinary Journal Supplement 18: 195–198.CrossRefGoogle Scholar
39Davie, A, Evans, DL, Hodgson, DR and Rose, RJ (1994). The effects of an oral glucose polymer on muscle glycogen resynthesis in Standardbred horses. Journal of Nutrition 124: 2740S–2741S.CrossRefGoogle ScholarPubMed
40Snow, DH and Harris, RC (1991). Effects of daily exercise on muscle glycogen in the Thoroughbred racehorse. In: Persson, S, Lindholm, A & Jeffcott, LB(eds), Equine Exercise Physiology 3 (pp. 299–304). Davis, California: ICEEP Publishing.Google Scholar
41Jose-Cunilleras, E, Hinchcliff, KW, Sams, RA and Devor, ST (2002). Glycemic index of a meal fed before exercise alters substrate use and glucose flux in horses. Journal of Applied Physiology 92: 117–128.CrossRefGoogle Scholar
42Geor, RJ, Hinchcliff, KW, McCutcheon, LJ and Sams, RA (2000). Epinephrine inhibits exogenous glucose utilization in exercising horses. Journal of Applied Physiology 88: 1777–1790.CrossRefGoogle ScholarPubMed
43Rice, O, Geor, R, Harris, P, Hoekstra, K, Gardner, S and Pagan, J (2001).. Effects of restricted hay intake on body weight and metabolic responses to high-intensity exercise in Thoroughbred horses. Proceedings of the 17th Conference of the Equine Nutrition and Physiology Society, pp. 273–279.Google Scholar
44Greenhaff, P (2000). Creatine. In: Maughan, R(ed.), Nutrition in Sport (pp. 367–378). Oxford: Blackwell Science.CrossRefGoogle Scholar
45Maughan, R (2002). The athlete's diet: nutritional goals and dietary strategies. Proceedings of the Nutrition Society 61: 87–96.CrossRefGoogle ScholarPubMed
46Harris, R, Soderlund, K and Hultman, E (1992). Elevation of creatine in resting and exercised muscle in normal subjects by creatine supplementation. Clinical Science 83: 367–374.CrossRefGoogle ScholarPubMed
47Green, A, Simpson, EJ and Littlewood, JJ (1996). Carbohydrate ingestion augments creatine retention during creatine feeding in man. Acta Physiologica Scandinavica 158: 195–202.CrossRefGoogle Scholar
48Sewell, D and Harris, RC (1995). Effect of creatine supplementation in the Thoroughbred horse. Equine Veterinary Journal Supplement 32: 239–242.CrossRefGoogle Scholar
49Schuback, K, Essen-Gustavsson, B and Persson, SGB (2000). Effect of creatine supplementation on muscle metabolic response to a maximal treadmill exercise test in Standardbred horses. Equine Veterinary Journal 32: 533–540.CrossRefGoogle ScholarPubMed
50Brass, E (2000). Supplemental carnitine and exercise. American Journal of Clinical Nutrition Supplement 77: 618S–623S.CrossRefGoogle Scholar
51Forster, C, Harris, RC and Snow, DH (1992). Total carnitine content of the middle gluteal muscle of Thoroughbred horses: normal values, variability and effect of acute exercise. Equine Veterinary Journal 24: 52–57.CrossRefGoogle Scholar
52Ceretelli, P and Marconi, C (1990). L -carnitine supplementation in humans: the effects on physical performance. International Journal of Sports Medicine 11: 1–14.CrossRefGoogle Scholar
53Forster, C, Harris, RC and Snow, DH (1988). The effect of oral L-carnitine supplementation on the muscle and plasma concentration in the Thoroughbred horse. Comparative Biochemistry and Physiology A 91: 827–835.CrossRefGoogle Scholar
54Harris, R, Forster, CV and Snow, DH (1995). Plasma carnitine concentration and uptake into muscle with oral and intravenous administration. Equine Veterinary Journal Supplement 18: 382–387.CrossRefGoogle Scholar
55Rivero, J, Sporleder, HP, Quiroz-Rothe, E, Vervuert, I, Coenen, M and Harmeyer, J (2002). Oral L -carnitine combined with training promote changes in skeletal muscle. Equine Veterinary Journal Supplement 34: 269–274.CrossRefGoogle Scholar
56Niemeyer, A, Vervuert, I, Appelt, K, Kluge, H, Jacobs, S, Baumgartner, M and Coenen, M (2005). Effects of L -carnitine supplementation on heart rate and selected metabolic responses in resting and exercising horses: a placebo-controlled double blind study. Pferdeheilkunde 21: 107–109.CrossRefGoogle Scholar
57Davis, J (1995). Carbohydrates, branched-chain amino acids and endurance: the central fatigue hypothesis. International Journal of Sports Medicine Supplement 5: S29–S38.Google ScholarPubMed
58Blomstrand, E, Ek, S and Newsholme, EA (1996). Influence of ingesting a solution of branched-chain amino acids on plasma and muscle concentrations of amino acids during prolonged submaximal exercise. Nutrition 12: 485–490.CrossRefGoogle ScholarPubMed
59Van Hall, G, Raaymakers, JSH and Saris, WHM (1995). Ingestion of branched-chain amino acids and tryptophan during sustained exertion: failure to affect performance. Journal of Physiology 486: 789–794.CrossRefGoogle Scholar
60Glade, M (1989).. Effects of specific amino acid supplementation on lactic acid production by horses exercised on a treadmill. Proceedings of the 11th Conference of the Equine Nutrition and Physiology Society, pp. 244–248.Google Scholar
61Stefanon, B, Bettini, P and Guggia, P (2000). Administration of branched-chain amino acids to Standardbred horses in training. Journal of Equine Veterinary Science 20: 115–119.CrossRefGoogle Scholar
62Casini, L (2000). Gatta L and Magni B Effect of prolonged branched-chain amino acid supplementation on metabolic response to anaerobic exercise in Standardbreds. Journal of Equine Veterinary Science 20: 120–123.CrossRefGoogle Scholar
63Rennie, M and Tipton, KD (2000). Protein and amino acid metabolism during and after exercise and the effects of nutrition. Annual Review of Nutrition 20: 457–483.CrossRefGoogle ScholarPubMed
64Rose, RJ, Schlierf, HA, Knight, PK and Evans, DL (1989). Effects of N, N-dimethylglycine on cardiorespiratory function and lactate production in thoroughbreds performing incremental treadmill exercise. Veterinary Record 125: 268–271.CrossRefGoogle Scholar
65Warren, LL, Lawrence, LM and Thompson, KN (1999). The influence of betaine on untrained and trained horses exercising to fatigue. Journal of Animal Science 77: 677–684.CrossRefGoogle ScholarPubMed
66Caron, JP and Genovese, RL (2003). Principles and practice of joint disease treatment. In: Ross, MW & Dyson, SJ(eds), Diagnosis and Management of Lameness in the Horse (pp. 673–746). Philadelphia: Elsevier Science.Google Scholar
67Fenton, JI, Chlebek-Brown, KA, Peters, TA, Caron, JP and Orth, MW (2000). Effects of glucosamine derivatives on equine articular degradation in explant culture. Osteoarthritis and Cartilage 8: 444–445.CrossRefGoogle ScholarPubMed
68Orth, MW, Peters, TL and Hawkins, JN (2002). Inhibition of articular cartilage degradation by glucosamine-HCl and chondroitin sulphate. Equine Veterinary. Journal Supplement 34: 224–229.CrossRefGoogle Scholar
69Chan, PS, Caron, JP, Rosa, GJ and Orth, MW (2005). Glucosamine and chondroitin sulfate regulate gene expression and synthesis of nitric oxide and prostaglandin E(2) in articular cartilage explants. Osteoarthritis and Cartilage 13: 387–394.CrossRefGoogle ScholarPubMed
70Denchant, JE, Baxter, GM, Frisbie, DD, Trotter, GW and McIlraith, CW (2005). Effects of glucosamine hydrochloride and chondroitin sulphate, alone or in combination, on normal and interleukin-1 conditioned equine articular cartilage explant metabolism. Equine Veterinary Journal 37: 227–231.CrossRefGoogle Scholar
71Keil, KM, Caron, JP and Orth, MW (2005). The role of glucosamine and chondroitin sulfate in treatment for and prevention of osteoarthritis in animals. Journal of the American Veterinary Medical Association 226: 1079–1088.Google Scholar
72McIlraith, CW (2004). Licensed medications ‘generic’ medications, compounding, and nutraceuticals - What has been scientifically validated, where do we encounter scientific mistruth, and where are we legally?'. Proceedings of the American Association of Equine Practitioners 50: 459–475.Google Scholar
73Eddington, ND, Du, J and White, N (2001). Evidence of the oral absorption of chondroitin sulfate as determined by total disaccharide content after oral and intravenous administration to horses. Proceedings of the American Association of Equine Practitioners 47: 326–328.Google Scholar
74Ramey, DW, Eddington, N and Thonar, E (2002). An analysis of glucosamine and chondroitin sulfate content in oral joint supplement products. Journal of Equine Veterinary Science 22: 125–127.CrossRefGoogle Scholar