Effect of Exercise Conditioning on Countering the Effects of Obesity and Insulin Resistance in Horses-A Review.
Abstract: Obesity is an important health concern in horses, along with humans and companion animals. Adipose tissue is an inflammatory organ that alters the insulin-signaling cascade, ultimately causing insulin dysregulation and impaired glucose metabolism. These disruptions can increase the risk of metabolic disease and laminitis in horses and may also impact energy metabolism during exercise. A single bout of exercise, along with chronic exercise conditioning, increases insulin sensitivity and glucose disposal via both contraction- and insulin-mediated glucose uptake pathways. Regular exercise also increases calorie expenditure, which can facilitate weight (as body fat) loss. This paper explores the metabolic pathways affected by adiposity, as well as discusses the impact of exercise on insulin metabolism in horses.
Publication Date: 2024-02-26 PubMed ID: 38473112PubMed Central: PMC10931081DOI: 10.3390/ani14050727Google Scholar: Lookup
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Summary
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This research article explores the effects of exercise on combating obesity and insulin resistance in horses, by examining the role of adipose tissue and how physical activity can enhance insulin sensitivity and glucose metabolism.
Overview of adiposity and exercise
- The main focus of the paper is on the impact of obesity and insulin resistance in horses, common health issues that also affect humans and other companion animals.
- Adiposity, the state of being obese or having excess body fat, is studied in relation to metabolic disruptions it can cause in horses.
- The researchers examine how adipose tissue, known as an inflammatory organ, can alter the insulin-signaling cascade, leading to insulin dysregulation and impaired glucose metabolism. These changes can increase horses’ risk for metabolic diseases and laminitis.
Effects of Exercise on Horses
- Among the potential solutions examined here, exercise emerges as a significant factor in combating these issues. Particularly, the impact of a single bout and chronic exercise conditioning on insulin sensitivity and glucose disposal is discussed.
- Physical activity is suggested to enhance both contraction- and insulin-mediated glucose uptake pathways, resulting in improved energy metabolism during exercise and overall horse health.
- Exercise also boosts calorie expenditure, which can contribute to weight loss in terms of body fat reduction.
The Connection between Adiposity, Exercise and Insulin Metabolism
- This paper meticulously explores the complex metabolic pathways affected by adiposity, providing a comprehensive look at the potential harms of obesity in horses.
- The researchers also delve extensively into the role of exercise in insulin metabolism, illustrating how physical conditioning can help manage and even alleviate obesity and related disorders.
Conclusion
- Overall, this research offers valuable insights for equine health practitioners, providing evidence-backed strategies for tackling obesity and insulin resistance in horses through exercise.
- While the paper focuses on horses, it may also bear implications for understanding obesity and insulin resistance in a broader range of animals, including humans.
Cite This Article
APA
Pratt-Phillips S.
(2024).
Effect of Exercise Conditioning on Countering the Effects of Obesity and Insulin Resistance in Horses-A Review.
Animals (Basel), 14(5).
https://doi.org/10.3390/ani14050727 Publication
Researcher Affiliations
- Department of Animal Science, North Carolina State University, Raleigh, NC 27607, USA.
Conflict of Interest Statement
The author declares no conflicts of interest.
References
This article includes 126 references
- . Exercise. [(accessed on 12 February 2024)]. Available online: https://www.ama-assn.org/topics/exercise.
- . Exercise Is Medicine. [(accessed on 10 February 2024)]. Available online: https://www.exerciseismedicine.org/
- Pataky Z, Armand S, Müller-Pinget S, Golay A, Allet L. Effects of obesity on functional capacity. Obesity 2014;22:56–62.
- Durham A, Frank N, McGowan CM, Menzies-Gow NJ, Roelfsema E, Vervuert I, Feige K, Fey KE. ECEIM concensus statement on equine metabolic syndrome. J Vet Intern Med 2019;33:335–349.
- Argo CM, Dugdale AHA, McGowan CM. Considerations for the use of restricted, soaked grass hay diets to promote weight loss in the management of equine metabolic syndrome and obesity. Vet J 2015;206:170–177.
- Karikoski NP, McGowan CM, Singer ER, Asplin KE, Tulamo R-M, Patterson-Kane JC. Pathology of Natural Cases of Equine Endocrinopathic Laminitis Associated with Hyperinsulinemia. Vet Pathol 2015;52:945–956.
- de Laat M, McGowan C, Sillence M, Pollitt CC. Equine laminitis: Induced by 48 hr hyperinsulinemia in Standardbred horses. Equine Vet J 2010;42:129–135.
- Petersen MC, Shulman GI. Mechanisms of Insulin Action and Insulin Resistance. Physiol Rev 2018;98:2133–2223.
- Sakamoto K, Holman GD. Emerging role for AS160/TBC1D4 and TBC1D1 in the regulation of GLUT4 traffic. Am J Physiol-Endocrinol Metab 2008;295:E29–E37.
- Bird SR, Hawley JA. Update on the effects of physical activity on insulin sensitivity in humans. BMJ Open Sport Exerc Med 2017;2:e000143.
- Kojta I, Chacińska M, Błachnio-Zabielska A. Obesity, Bioactive Lipids, and Adipose Tissue Inflammation in Insulin Resistance. Nutrients 2020;12:1305.
- Yang Q, Vijayakumar A, Kahn BB. Metabolites as regulators of insulin sensitivity and metabolism. Nat Rev Mol Cell Biol 2018;19:654–672.
- Navale AM, Paranjape AN. Glucose transporters: Physiological and pathological roles. Biophys Rev 2016;8:5–9.
- Bruun JM, Lihn AS, Verdich C, Pedersen SB, Toubro S, Astrup A, Richelsen B. Regulation of adiponectin by adipose tissue-derived cytokines: In vivo and in vitro investigations in humans. Am J Physiol-Endocrinol Metab 2003;285:E527–E533.
- Hotamisligil GS, Peraldi P, Budavari A, Ellis R, White MF, Spiegelman BM. IRS-1-Mediated Inhibition of Insulin Receptor Tyrosine Kinase Activity in TNF-α- and Obesity-Induced Insulin Resistance. Science 1996;271:665–670.
- Hotamisligil GS. Molecular mechanisms of insulin resistance and the role of the adipocyte. Int J Obes 2000;24:S23–S27.
- Pehmøller C, Brandt N, Birk JB, Høeg LD, Sjøberg KA, Goodyear LJ, Kiens B, Richter EA, Wojtaszewski JF. Exercise alleviates lipid-induced insulin resistance in human skeletal muscle-signaling interaction at the level of TBC1 domain family member 4. Diabetes 2012;61:2743–2752.
- Qatanani M, Lazar M. Mechanisms of obesity-associated insulin resistance: Many choices on the menu. Genes Dev 2007;21:1443–1455.
- Kahn SE, Hull RL, Utzschneider KM. Mechanisms linking obesity to insulin resistance and type 2 diabetes. Nature 2006;444:840–846.
- Zdrojewicz Z, Popowicz E, Szyca M, Michalik T, Śmieszniak B. TOFI phenotype—Its effect on the occurrence of diabetes. Pediatr Endocrinol Diabetes Metab 2017;23:96–100.
- Sequeira IR, Yip W, Lu L, Jiang Y, Murphy R, Plank L, Zhang S, Liu H, Chuang C-L, Vazhoor-Amarsingh G. Visceral Adiposity and Glucoregulatory Peptides are Associated with Susceptibility to Type 2 Diabetes: The TOFI_Asia Study. Obesity 2020;28:2368–2378.
- DiNicolantonio JJ, Mehta V, Onkaramurthy N, O’Keefe JH. Fructose-induced inflammation and increased cortisol: A new mechanism for how sugar induces visceral adiposity. Prog Cardiovasc Dis 2018;61:3–9.
- Gorenko Z, Ocheretko B, Kovelskaya A. an interrelation of physical working capacity and body component composition indicators of amateur athletes. Slobozhanskyi Her Sci Sport 2017;60:33–37.
- Hergenroeder AL, Brach JS, Otto AD, Sparto PJ, Jakicic JM. The Influence of Body Mass Index on Self-report and Performance-based Measures of Physical Function in Adult Women. Cardiopulm Phys Ther J 2011;22:11–20.
- Laurson KR, Eisenmann JC. Prevalence of Overweight Among High School Football Linemen. JAMA 2007;297:359–364.
- Michailidis Y. Physical condition differences between semi-professional and amateur soccer players. Int J Sport Cult Sci 2018;6:191–202.
- Ekkekakis P, Lind E. Exercise does not feel the same when you are overweight: The impact of self-selected and imposed intensity on affect and exertion. Int J Obes 2006;30:652–660.
- Mengeste AM, Rustan AC, Lund J. Skeletal muscle energy metabolism in obesity. Obesity 2021;29:1582–1595.
- Friedman JE, Caro J, Pories WJ, Azevedo JL, Dohm GL. Glucose metabolism in incubated human muscle: Effect of obesity and non-insulin-dependent diabetes mellitus. Metabolism 1994;43:1047–1054.
- Mondal H, Mishra SP. Effect of BMI, Body Fat Percentage and Fat Free Mass on Maximal Oxygen Consumption in Healthy Young Adults. J Clin Diagn Res 2017;11:cc17–cc20.
- Hulens M, Vansant G, Lysens R, Claessens AL, Muls E. Exercise capacity in lean versus obese women. Scand J Med Sci Sports 2001;11:305–309.
- Pratt-Phillips S, Munjizun A. Impacts of Adiposity on Exercise Performance in Horses. Animals 2023;13:666.
- Dugdale A, Curtis G, Harris P, Argo C. Assessment of body fat in the pony: Part I. Relationships between the anatomical distribution of adipose tissue, body composition and body condition. Equine Vet J 2011;43:552–561.
- Dugdale A, Curtis G, Milne E, Harris P, Argo C. Assessment of body fat in the pony: Part II. Validation of the deuterium oxide dilution technique for the measurement of body fat. Equine Vet J 2011;43:562–570.
- Henneke DR, Potter GD, Kreider JL, Yeates BF. Relationship between condition score, physical measurements and body fat percentage in mares. Equine Vet J 1983;15:371–372.
- Carter RA, Geor R, Staniar WB, Cubitt TA, Harris PA. Apparent adiposity assessed by standardised scoring systems and morphometric measurements in horses and ponies. Vet J 2009;179:204–210.
- Morrison PK, Harris PA, Maltin CA, Grove-White D, Argo CM. EQUIFAT: A novel scoring system for the semi-quantitative evaluation of regional adipose tissues in Equidae. PLoS ONE 2017;12:e0173753.
- Thatcher CD, Pleasant RS, Geor RJ, Elvinger F. Prevalence of overconditioning in mature horses in southwest Virginia during the summer. J Vet Intern Med 2012;26:1413–1418.
- Pratt-Phillips SE, Owens KM, Dowler LE, Cloninger MT. Assessment of Resting Insulin and Leptin Concentrations and Their Association With Managerial and Innate Factors in Horses. J Equine Vet Sci 2010;30:127–133.
- Pagan JD, Martin OA, Crowley NL. Relationship between Body Condition and Metabolic Parameters in Sport Horses, Pony Hunters and Polo Ponies. J Equine Vet Sci 2009;29:418–420.
- Pratt-Phillips S, Munjizun A, Janicki K. Visual Assessment of Adiposity in Elite Hunter Ponies. J Equine Vet Sci 2023;121:104199.
- Bamford NJ, Potter SJ, Harris PA, Bailey SR. Breed differences in insulin sensitivity and insulinemic responses to oral glucose in horses and ponies of moderate body condition score. Domest Anim Endocrinol 2014;47:101–107.
- Giles SL, Rands SA, Nicol C, Harris P. Obesity prevalence and associated risk factors in outdoor living domestic horses and ponies. PeerJ 2014;121:e299.
- Van Den Wollenberg L, Vandendriessche V, van Maanen K, Counotte GHM. Comparison of Two Diagnostic Methods to Detect Insulin Dysregulation in Horses under Field Conditions. J Equine Vet Sci 2020;88:102954.
- Coleman MC, Whitfield-Cargile CM, Madrigal RG, Cohen ND. Comparison of the microbiome, metabolome, and lipidome of obese and non-obese horses. PLoS ONE 2019;14:e0215918.
- Biddle AS, Tomb J-F, Fan Z. Microbiome and Blood Analyte Differences Point to Community and Metabolic Signatures in Lean and Obese Horses. Front Vet Sci 2018;5:225.
- Frank N, Tadros E. Insulin dysregulation. Equine Vet J 2014;46:103–112.
- Pratt-Phillips SE, Geor RJ, McCutcheon LJ. Comparison among the euglycemic-hyperinsulinemic clamp, insulin-modified frequently sampled intravenous glucose tolerance test, and oral glucose tolerance test for assessment of insulin sensitivity in healthy Standardbreds. Am J Vet Res 2015;76:84–91.
- Kronfeld DS, Treiber KH, Geor RJ. Comparison of nonspecific indications and quantitative methods for the assessment of insulin resistance in horses and ponies. J Am Vet Med Assoc 2005;226:712–719.
- Treiber KH, Kronfeld DS, Hess TM, Boston RC, Harris PA. Use of proxies and reference quintiles obtained from minimal model analysis for determination of insulin sensitivity and pancreatic beta-cell responsiveness in horses. Am J Vet Res 2005;66:2114–2121.
- Schuver A, Frank N, Chameroy K, Elliott SB. Assessment of insulin and glucose dynamics by using an oral sugar test in horses. J Equine Vet Sci 2014;34:465–470.
- Box JR, McGowan CM, Raekallio MR, Mykkänen AK, Carslake H, Karikoski NP. Insulin dysregulation in a population of Finnhorses and associated phenotypic markers of obesity. J Vet Intern Med 2020;34:1599–1605.
- Reynolds A, Keen JA, Fordham T, Morgan RA. Adipose tissue dysfunction in obese horses with equine metabolic syndrome. Equine Vet J 2019;51:760–766.
- d’Fonseca NMM, Gibson CME, van Doorn DA, de Ruijter-Villani M, Stout TAE, Roelfsema E. Effect of long-term overfeeding of a high-energy diet on glucose tolerance in Shetland pony mares. J Vet Intern Med 2020;34:1339–1349.
- Ribeiro RM, Ribeiro DS, Paz CFR, Gobesso AA, Faleiros RR. Insulin dysregulation in horses with induced obesity. Pesqui Veterinária Bras 2020;40:39–45.
- Pratt SE, Geor RJ, McCutcheon LJ. Effects of dietary energy source and physical conditioning on insulin sensitivity and glucose tolerance in Standardbred horses. Equine Vet J 2006;38:579–584.
- Hoffman RM, Boston RC, Stefanovski D, Kronfeld DS, Harris PA. Obesity and diet affect glucose dynamics and insulin sensitivity in Thoroughbred geldings. J Anim Sci 2003;81:2333–2342.
- de Laat MA, Reiche DB, Sillence MN, McGree JM. Incidence and risk factors for recurrence of endocrinopathic laminitis in horses. J Vet Intern Med 2019;33:1473–1482.
- Suagee JK, Corl B, Crisman M, Pleasant RS, Thatcher CD, Geor RJ. Relationships between body condition score and plasma inflammatory cytokines, insulin and lipids in a mixed population of light-breed horses. J Vet Intern Med 2013;27:157–163.
- Harris PA, Bamford NJ, Bailey SR. Equine metabolic syndrome: Evolution of understanding over two decades: A personal perspective. Anim Prod Sci 2020;60:2103–2110.
- Ragno VM, Zello GA, Klein CD, Montgomery JB. From Table to Stable: A Comparative Review of Selected Aspects of Human and Equine Metabolic Syndrome. J Equine Vet Sci 2019;79:131–138.
- Morgan R, Keen J, McGowan C. Equine metabolic syndrome. Vet Rec 2015;177:173–179.
- Carter RA, Treiber KH, Geor RJ, Douglass L, Harris PA. Prediction of incipient pasture-associated laminitis from hyperinsulinaemia, hyperleptinaemia and generalised and localised obesity in a cohort of ponies. Equine Vet J 2009;41:171–178.
- Banse HE, Frank N, Kwong GP, McFarlane D. Relationship of oxidative stress in skeletal muscle with obesity and obesity-associated hyperinsulinemia in horses. Can J Vet Res 2015;79:329–338.
- Adams AA, Katepalli MP, Kohler K, Reedy SE, Stilz JP, Vick MM, Fitzgerald BP, Lawrence LM, Horohov DW. Effect of body condition, body weight and adiposity on inflammatory cytokine responses in old horses. Vet Immunol Immunopathol 2009;127:286–294.
- Vick MM, Adams AA, Murphy BA, Sessions DR, Horohov DW, Cook RF, Shelton BJ, Fitzgerald BP. Relationships among inflammatory cytokines, obesity, and insulin sensitivity in the horses. J Anim Sci 2007;85:1144–1155.
- Zak A, Siwinska N, Elzinga S, Barker VD, Stefaniak T, Schanbacher BJ, Place NJ, Niedzwiedz A, Adams AA. Effects of equine metabolic syndrome on inflammation and acute-phase markers in horses. Domest Anim Endocrinol 2020;72:106448.
- Girardi FM, da Fonseca LA, Ribeiro Filho JD, Souto PC, Ferreira DAC, Dornelas L, Bento LD, de Carvalho Filho WP. Influence of Obesity on Serum Concentrations of Acute-Phase Proteins in Horses. J Equine Vet Sci 2019;83:102810.
- Pleasant RS, Suagee JK, Thatcher CD, Elvinger F, Geor RJ. Adiposity, plasma insulin, leptin, lipids, and oxidative stress in mature light breed horses. J Vet Intern Med 2013;27:576–582.
- Ungru J, Blüher M, Coenen M, Raila J, Boston R, Vervuert I. Effects of body weight reduction on blood adipokines and subcutaneous adipose tissue adipokine mRNA expression profiles in obese ponies. Vet Rec 2012;171:528.
- Daradics Z, Crecan CM, Rus MA, Morar IA, Mircean MV, Cătoi AF, Cecan AD, Cătoi C. Obesity-Related Metabolic Dysfunction in Dairy Cows and Horses: Comparison to Human Metabolic Syndrome. Life 2021;11:1406.
- Hurrle S, Hsu WH. The etiology of oxidative stress in insulin resistance. Biomed J 2017;40:257–262.
- Carter R, McCutcheon LJ, George L, Smith T, Frank N, Geor RJ. Effects of diet-induced weight gain on insulin sensitivity and plasma hormone and lipid concentrations in horses. Am J Vet Res 2009;70:1250–1258.
- Quinn RW, Burk AO, Hartsock TG, Petersen ED, Whitley NC, Treiber KH, Boston RC. Insulin Sensitivity in Thoroughbred Geldings: Effect of Weight Gain, Diet, and Exercise on Insulin Sensitivity in Thoroughbred Geldings. J Equine Vet Sci 2008;28:728–738.
- Blaue D, Schedlbauer C, Starzonek J, Gittel C, Brehm W, Einspanier A, Vervuert I. Effects of body weight gain on insulin and lipid metabolism in equines. Domest Anim Endocrinol 2019;68:111–118.
- Burrows AM. Relationship between Live Body Condition Score and Internal Kidney, Pelvic, and Heart Fat Measurements in Equine Carcasses. Ph.D. Thesis. West Texas A&M University; Canyon, TX, USA: 2017.
- Siwinska N, Janus I, Zak-Bochenek A, Noszczyk-Nowak A. Influence of Obesity on Histological Tissue Structure of the Cardiovascular System in Horsess. Animals 2022;12:732.
- Cho K-H, Son S-K, Cho B-W, Lee H-K, Kong H-S, Jeon G-J, Park K-D. Effects of change of body weight on racing time in Thoroughbred racehorses. J Anim Sci Technol 2008;50:741–746.
- Powell DM, Bennett-Wimbush K, Peeples A, Duthie M. Evaluation of Indicators of Weight-Carrying Ability of Light Riding Horses. J Equine Vet Sci 2008;28:28–33.
- Munjizun A, Gluck C, Walston L, High K, Hunter R, Pratt-Phillips S. Effect of weight carriage on work effort in horses. Comp Exerc Physiol 2023;19:511–516.
- Stefánsdóttir GJ, Gunnarsson V, Roepstorff L, Ragnarsson S, Jansson A. The effect of rider weight and additional weight in Icelandic horses in tölt: Part I. Physiological responses. Animal 2017;11:1558–1566.
- Jansson A, Gunnarsson VÞ, Ringmark S, Ragnarsson S, Söderroos D, Ásgeirsson E, Jóhannsdóttir TR, Liedberg C, Stefánsdóttir GJ. Increased body fat content in horses alters metabolic and physiological exercise response, decreases performance, and increases locomotion asymmetry. Physiol Rep 2021;9:e14824.
- Webb SP, Potter GD, Evans JW, Webb GW. Influence of body fat content on digestible energy requirements of exercising horses in temperate and hot environments. J Equine Vet Sci 1990;10:116–120.
- Sanderson S. The epidemic of canine obesity and its role in osteoarthritis. Isr J Vet Med 2012;67:195–202.
- Frye CW, Shmalberg JW, Wakshlag JJ. Obesity, exercise and orthopedic disease. Vet Clin Small Anim Pract 2016;46:831–841.
- Jaqueth AL, Iwaniuk ME, Burk AO. Characterization of the Prevalence and Management of Over-Conditioned Ponies and Horses in Maryland. J Equine Vet Sci 2018;68:26–32.
- Gleeson M, Bishop NC, Stensel DJ, Lindley MR, Mastana SS, Nimmo MA. The anti-inflammatory effects of exercise: Mechanisms and implications for the prevention and treatment of disease. Nat Rev Immunol 2011;11:607–615.
- Magkos F, Tsekouras Y, Kavouras SA, Mittendorfer B, Sidossis LS. Improved insulin sensitivity after a single bout of exercise is curvilinearly related to exercise energy expenditure. Clin Sci 2008;114:59–64.
- Steenberg DE, Jørgensen NB, Birk JB, Sjøberg KA, Kiens B, Richter EA, Wojtaszewski JFP. Exercise training reduces the insulin-sensitizing effect of a single bout of exercise in human skeletal muscle. J Physiol 2019;597:89–103.
- Kjøbsted R, Munk-Hansen N, Birk JB, Foretz M, Viollet B, Björnholm M, Zierath JR, Treebak JT, Wojtaszewski JFP. Enhanced Muscle Insulin Sensitivity After Contraction/Exercise Is Mediated by AMPK. Diabetes 2016;66:598–612.
- Jensen TE, Sylow L, Rose AJ, Madsen AB, Angin Y, Maarbjerg SJ, Richter EA. Contraction-stimulated glucose transport in muscle is controlled by AMPK and mechanical stress but not sarcoplasmatic reticulum Ca(2+) release. Mol Metab 2014;3:742–753.
- Burke LM, Loon LJC van, Hawley JA. Postexercise muscle glycogen resynthesis in humans. J Appl Physiol 2017;122:1055–1067.
- DiMenna FJ, Arad AD. The acute vs. chronic effect of exercise on insulin sensitivity: Nothing lasts forever. Cardiovasc Endocrinol Metab 2021;10:149–161.
- Dela F, Ploug T, Handberg A, Petersen LN, Larsen JJ, Mikines KJ, Galbo H. Physical training increases muscle GLUT4 protein and mRNA in patients with NIDDM. Diabetes 1994;43:862–865.
- Richter EA, Hargreaves M. Exercise, GLUT4, and skeletal muscle glucose uptake. Physiol Rev 2013;93:993–1017.
- Greiwe JS, Hickner RC, Hansen PA, Racette SB, Chen MM, Holloszy JO. Effects of endurance exercise training on muscle glycogen accumulation in humans. J Appl Physiol 1999;87:222–226.
- Duncan GE, Perri MG, Theriaque DW, Hutson AD, Eckel RH, Stacpoole PW. Exercise Training, Without Weight Loss, Increases Insulin Sensitivity and Postheparin Plasma Lipase Activity in Previously Sedentary Adults. Diabetes Care 2003;26:557–562.
- Ross R. Does exercise without weight loss improve insulin sensitivity?. Diabetes Care 2003;26:944–946.
- Campbell PT, Gross MD, Potter JD, Schmitz KH, Duggan C, McTiernan A, Ulrich CM. Effect of exercise on oxidative stress: A 12-month randomized, controlled trial. Med Sci Sports Exerc 2010;42:1448–1453.
- Nojima H, Watanabe H, Yamane K, Kitahara Y, Sekikawa K, Yamamoto H, Yokoyama A, Inamizu T, Asahara T, Kohno N. Effect of aerobic exercise training on oxidative stress in patients with type 2 diabetes mellitus. Metabolism 2008;57:170–176.
- Whillier S. Exercise and Insulin Resistance. Physical Exercise for Human Health 2020:137–150.
- Gonzalez-Ortiz M, Robles-Cervantes J, Cardenas-Camarena L, Bustos-Saldana R, Martinez-Abundis E. The effects of surgically removing subcutaneous fat on the metabolic profile and insulin sensitivity in obese women after large-volume liposuction treatment. Horm Metab Res 2002;34:446–449.
- Giugliano G, Nicoletti G, Grella E, Giugliano F, Esposito K, Scuderi N, D’Andrea F. Effect of liposuction on insulin resistance and vascular inflammatory markers in obese women. Br J Plast Surg 2004;57:190–194.
- Brennan AM, Standley RA, Anthony SJ, Grench KE, Helbling NL, DeLany JP, Cornnell HH, Yi F, Stefanovic-Racic M, Toledo FGS. Weight Loss and Exercise Differentially Affect Insulin Sensitivity, Body Composition, Cardiorespiratory Fitness, and Muscle Strength in Older Adults With Obesity: A Randomized Controlled Trial. J Gerontol Ser A 2021;77:1088–1097.
- Ryan AS, Ge S, Blumenthal JB, Serra MC, Prior SJ, Goldberg AP. Aerobic Exercise and Weight Loss Reduce Vascular Markers of Inflammation and Improve Insulin Sensitivity in Obese Women. J Am Geriatr Soc 2014;62:607–614.
- Gallo G, Candilio G, De Luca E, Iannicelli A, Sciaudone G, Pellino G, Sacco R, Selvaggi F, Sammarco G. Bariatric surgery and rheumatic diseases: A literature review. Rev Recent Clin Trials 2018;13:176–183.
- Edwards C, Rogers A, Lynch S, Pylawka T, Silvis M, Chinchilli V, Mosher T, Black K. The effects of bariatric surgery weight loss on knee pain in patients with osteoarthritis of the knee. Arthritis 2012;2012:504189.
- Powell DM, Reedy SE, Sessions DR, Fitzgerald BP. Effect of short-term exercise training on insulin sensitivity in obese and lean Mares. Equine Vet J 2002;34:81–84.
- Stewart-Hunt L, Pratt-Phillips S, McCutcheon LJ, Geor RJ. Dietary energy source and physical conditioning affect insulin sensitivity and skeletal muscle glucose metabolism in horses. Equine Vet J 2010;42:355–360.
- Stewart-Hunt L, Geor RJ, McCutcheon LJ. Effects of short-term training on insulin sensitivity and skeletal muscle glucose metabolism in Standardbred horses. Equine Vet J Suppl 2006;36:226–232.
- Carter RA, McCutcheon LJ, Valle E, Meilahn EN, Geor RJ. Effects of exercise training on adiposity, insulin sensitivity, and plasma hormone and lipid concentrations in overweight or obese, insulin-resistant horses. Am J Vet Res 2010;71:314–321.
- Freestone JF, Beadle R, Shoemaker K, Bessin RT, Wolfsheimer KJ, Church C. Improved insulin sensitivity in hyperinsulinaemic ponies through physical conditioning and controlled feed intake. Equine Vet J 1992;24:187–190.
- Turner SP, Hess TM, Treiber K, Mello EB, Souza BG, Almeida FQ. Comparison of Insulin Sensitivity of Horses Adapted to Different Exercise Intensities. J Equine Vet Sci 2011;31:645–649.
- de Laat MA, Hampson BA, Sillence MN, Pollitt CC. Sustained, Low-Intensity Exercise Achieved by a Dynamic Feeding System Decreases Body Fat in Ponies. J Vet Intern Med 2016;30:1732–1738.
- Moore JL, Siciliano PD, Pratt-Phillips SE. Effects of Diet Versus Exercise on Morphometric Measurements, Blood Hormone Concentrations, and Oral Sugar Test Response in Obese Horses. J Equine Vet Sci 2019;78:38–45.
- Bamford NJ, Potter SJ, Baskerville CL, Harris PA, Bailey SR. Influence of dietary restriction and low-intensity exercise on weight loss and insulin sensitivity in obese equids. J Vet Intern Med 2019;33:280–286.
- Gordon M, Jerina M, Raub R, Davison K, Young J, Williamson K. The effects of dietary manipulation and exercise on weight loss and related indices of health in horses. Comp Exerc Physiol 2009;6:33–42.
- Van Weyenberg S, Hesta M, Buyse J, Janssens GPJ. The effect of weight loss by energy restriction on metabolic profile and glucose tolerance in ponies. J Anim Physiol Anim Nutr 2008;92:538–545.
- Dugdale AHA, Curtis GC, Cripps P, Harris PA, Argo CM. Effect of dietary restriction on body condition, composition and welfare of overweight and obese pony mares. Equine Vet J 2010;42:600–610.
- Gill JC, Pratt-Phillips SE, Mansmann R, Siciliano PD. Weight Loss Management in Client-Owned Horses. J Equine Vet Sci 2016;39:80–89.
- Argo CM, Curtis G, Grove-White D, Dugdale A, Barfoot CF, Harris P. Weight loss resistance: A further consideration for the nutritional management of obese Equidae. Vet J 2012;194:179–188.
- Frank N, Elliott S, Boston RC. Effects of long-term oral administration of levothyrozine sodium on glucose dynamics in healthy adult horses. Am J Vet Res 2008;69:76–81.
- Lacombe VA, Hinchcliff KW, Geor RJ, Baskin CR. Muscle glycogen depletion and subsequent replenishment affect anaerobic capacity of horses. J Appl Physiol 2001;91:1782–1790.
- Geor RJ, Larsen L, Waterfall HL, Stewart-Hunt L, McCutcheon LJ. Route of carbohydrate administration affects early post exercise muscle glycogen storage in horses. Equine Vet J 2006;38:590–595.
- Pratt SE, Geor RJ, Spriet LL, McCutcheon LJ. Time course of insulin sensitivity and skeletal muscle glycogen synthase activity after a single bout of exercise in horses. J Appl Physiol 2007;103:1063–1069.
- Valberg SJ, Velez-Irizarry D, Williams ZJ, Pagan JD, Mesquita V, Waldridge B, Maresca-Fichter H. Novel Expression of GLUT3, GLUT6 and GLUT10 in Equine Gluteal Muscle Following Glycogen-Depleting Exercise: Impact of Dietary Starch and Fat. Metabolites 2023;13:718.
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