A Scoping Review of Non-Structural Airway Disease as a Cause of Poor Performance in Racehorses.
Abstract: The association between poor performance and respiratory disease in Thoroughbred racehorses that do not have a structural abnormality of the respiratory tract, is often based on anecdotal evidence. The objective of this scoping review was to examine the scientific evidence for such associations. Publications were selected based on a search of three databases (PubMed, Scopus, and CAB Direct), in English and without date restriction, followed by a screening process to exclude non-relevant papers, duplicates, and reviews. This process identified 996 publications of which 20 were analysed using the Quality in Prognosis Studies (QUIPS) tool. The results indicated that the evidence supporting the relationship between proposed diagnostic indicators and poor performance is variable. There is a need for better quality evidence. In particular, there are conflicting reports relating to the impact of equine asthma and EIPH on athletic performance. Furthermore, a lack of standardisation in the measurement of racehorse performance makes it difficult to compare findings from different studies. The industry would benefit from high-level guidance concerning the design of controlled performance studies in Thoroughbred racehorses to collect comprehensive data and facilitate targeted interventions.
Publication Date: 2023-01-27 PubMed ID: 36766318PubMed Central: PMC9913315DOI: 10.3390/ani13030429Google Scholar: Lookup
The Equine Research Bank provides access to a large database of publicly available scientific literature. Inclusion in the Research Bank does not imply endorsement of study methods or findings by Mad Barn.
- Journal Article
- Review
- Asthma
- Athletic Performance
- Clinical Study
- Comparative Study
- Diagnosis
- Diagnostic Technique
- Disease Diagnosis
- Disease Etiology
- Epidemiology
- Equine Diseases
- Equine Health
- Equine Science
- Exercise Physiology
- Horse Training
- Performance Horses
- Respiratory Disease
- Thoroughbreds
- Veterinary Care
- Veterinary Medicine
- Veterinary Research
Summary
This research summary has been generated with artificial intelligence and may contain errors and omissions. Refer to the original study to confirm details provided. Submit correction.
The research article seeks to review scientific publications to determine the relationship between non-structural respiratory diseases and poor performance in Thoroughbred racehorses. With particular reference to the impact of equine asthma and EIPH (Exercise-Induced Pulmonary Hemorrhage), this research indicates conflicting evidence and calls for more solid, standardised studies.
Scoping Review Process
- The review began with a search through three databases, PubMed, Scopus, and CAB Direct, for relevant publications on the subject.
- The search wasn’t limited by date or language, making it broad and inclusive.
- A screening process was then employed to exclude non-relevant papers, duplicates, and review pieces, leaving only original studies and investigations.
- At the end of this process, 996 publications were identified.
Data Analysis
- Of the identified papers, only 20 met the criteria for the review and were therefore further analysed using a predetermined evaluation tool, the Quality in Prognosis Studies (QUIPS).
- The QUIPS tool is designed to assess the risk of bias in prognostic factor studies, providing a comprehensive and systematic approach to evaluating the quality of the evidence in these publications.
- By utilizing this tool, the researchers aimed to ensure an equitable and thorough examination of the available data.
Study Findings
- According to the results of the QUIPS tool analyses, the evidence supporting a link between diagnostic indicators of non-structural respiratory diseases and poor performance in racehorses is variable.
- This means that the strength and conviction of the evidence differed from study to study and was generally inconsistent.
- Specifically for equine asthma and Exercise-Induced Pulmonary Hemorrhage (EIPH), studies have been conflicted about their impact on athletic performance in racehorses.
- These conflicting results highlight a need for high-quality evidence to form a decisive conclusion.
Recommendations
- The authors recommend establishing standardised measures of racehorse performance to allow for easier comparison across different studies.
- They encourage the use of controlled performance studies in Thoroughbred racehorses with an aim to gather comprehensive, high-quality data that can inform targeted interventions to improve horse health and performance.
- These recommendations, if taken up by the industry, could help to resolve the current uncertainty in the literature about the impact of non-structural respiratory diseases on racehorse performance.
Cite This Article
APA
Cullinane A, Garvey M, Walsh C, Gibbons J, Creighton A.
(2023).
A Scoping Review of Non-Structural Airway Disease as a Cause of Poor Performance in Racehorses.
Animals (Basel), 13(3), 429.
https://doi.org/10.3390/ani13030429 Publication
Researcher Affiliations
- The Irish Equine Centre, Johnstown, Naas, Co., W91 RH93 Kildare, Ireland.
- The Irish Equine Centre, Johnstown, Naas, Co., W91 RH93 Kildare, Ireland.
- Department of Mathematics and Statistics, University of Limerick, V94 T9PX Limerick, Ireland.
- The Irish Equine Centre, Johnstown, Naas, Co., W91 RH93 Kildare, Ireland.
- The Irish Equine Centre, Johnstown, Naas, Co., W91 RH93 Kildare, Ireland.
Grant Funding
- Equine Technical Support & Equine Breeding Schemes 2019-2021. / Department of Agriculture, Food and the Marine, Ireland.
Conflict of Interest Statement
The authors declare no conflict of interest.
References
This article includes 56 references
- Jeffcott LB, Rossdale PD, Freestone J, Frank CJ, Towers-Clark PF. An assessment of wastage in thoroughbred racing from conception to 4 years of age.. Equine Vet J 1982 Jul;14(3):185-98.
- Rossdale PD, Hopes R, Digby NJ, offord K. Epidemiological study of wastage among racehorses 1982 and 1983.. Vet Rec 1985 Jan 19;116(3):66-9.
- Cardwell JM, Smith KC, Wood JL, Newton JR. Infectious risk factors and clinical indicators for tracheal mucus in British National Hunt racehorses.. Equine Vet J 2014 Mar;46(2):150-5.
- Cardwell JM, Smith KC, Wood JL, Newton JR. A longitudinal study of respiratory infections in British National Hunt racehorses.. Vet Rec 2013 Jun 15;172(24):637.
- Couëtil LL, Cardwell JM, Gerber V, Lavoie JP, Léguillette R, Richard EA. Inflammatory Airway Disease of Horses--Revised Consensus Statement.. J Vet Intern Med 2016 Mar-Apr;30(2):503-15.
- Kinnison T, Cardwell JM. Conflict Between Direct Experience and Research-Based Evidence Is a Key Challenge to Evidence-Based Respiratory Medicine on British Racing Yards.. Front Vet Sci 2020;7:266.
- Kinnison T, McGilvray TA, Couëtil LL, Smith KC, Wylie CE, Bacigalupo SA, Gomez-Grau E, Cardwell JM. Mild-moderate equine asthma: A scoping review of evidence supporting the consensus definition.. Vet J 2022 Aug;286:105865.
- Ivester KM, Couëtil LL, Moore GE, Zimmerman NJ, Raskin RE. Environmental exposures and airway inflammation in young thoroughbred horses.. J Vet Intern Med 2014 May-Jun;28(3):918-24.
- Mazan MR, Hoffman AM. Effects of aerosolized albuterol on physiologic responses to exercise in standardbreds.. Am J Vet Res 2001 Nov;62(11):1812-7.
- Saulez MN, Gummow B. Prevalence of pharyngeal, laryngeal and tracheal disorders in thoroughbred racehorses, and effect on performance.. Vet Rec 2009 Oct 10;165(15):431-5.
- Hinchcliff KW, Couetil LL, Knight PK, Morley PS, Robinson NE, Sweeney CR, van Erck E. Exercise induced pulmonary hemorrhage in horses: American College of Veterinary Internal Medicine consensus statement.. J Vet Intern Med 2015 May-Jun;29(3):743-58.
- Lyle CH, Uzal FA, McGorum BC, Aida H, Blissitt KJ, Case JT, Charles JT, Gardner I, Horadagoda N, Kusano K, Lam K, Pack JD, Parkin TD, Slocombe RF, Stewart BD, Boden LA. Sudden death in racing Thoroughbred horses: an international multicentre study of post mortem findings.. Equine Vet J 2011 May;43(3):324-31.
- Tricco AC, Lillie E, Zarin W, O'Brien KK, Colquhoun H, Levac D, Moher D, Peters MDJ, Horsley T, Weeks L, Hempel S, Akl EA, Chang C, McGowan J, Stewart L, Hartling L, Aldcroft A, Wilson MG, Garritty C, Lewin S, Godfrey CM, Macdonald MT, Langlois EV, Soares-Weiser K, Moriarty J, Clifford T, Tunçalp Ö, Straus SE. PRISMA Extension for Scoping Reviews (PRISMA-ScR): Checklist and Explanation.. Ann Intern Med 2018 Oct 2;169(7):467-473.
- Ouzzani M, Hammady H, Fedorowicz Z, Elmagarmid A. Rayyan-a web and mobile app for systematic reviews.. Syst Rev 2016 Dec 5;5(1):210.
- Hayden JA, van der Windt DA, Cartwright JL, Côté P, Bombardier C. Assessing bias in studies of prognostic factors.. Ann Intern Med 2013 Feb 19;158(4):280-6.
- Cochrane Quality in Prognosis Studies Tool. [(accessed on 30 November 2022)]. Available online: http://methods.cochrane.org/sites/methods.cochrane.org.prognosis/files/uploads/QUIPS%20tool.pdf.
- Page MJ, McKenzie JE, Bossuyt PM, Boutron I, Hoffmann TC, Mulrow CD, Shamseer L, Tetzlaff JM, Akl EA, Brennan SE, Chou R, Glanville J, Grimshaw JM, Hróbjartsson A, Lalu MM, Li T, Loder EW, Mayo-Wilson E, McDonald S, McGuinness LA, Stewart LA, Thomas J, Tricco AC, Welch VA, Whiting P, Moher D. The PRISMA 2020 statement: an updated guideline for reporting systematic reviews.. BMJ 2021 Mar 29;372:n71.
- Nolen-Walston RD, Harris M, Agnew ME, Martin BB, Reef VB, Boston RC, Davidson EJ. Clinical and diagnostic features of inflammatory airway disease subtypes in horses examined because of poor performance: 98 cases (2004-2010).. J Am Vet Med Assoc 2013 Apr 15;242(8):1138-45.
- Kusano K, Ishikawa Y, Seki K, Kusunose R. Characteristic of inflammatory airway disease in Japanese thoroughbred racehorses.. J Equine Sci 2008;19(2):25-9.
- Allen KJ, Tremaine WH, Franklin SH. Prevalence of inflammatory airway disease in national hunt horses referred for investigation of poor athletic performance.. Equine Vet J Suppl 2006 Aug;(36):529-34.
- McKane SA, Rose RJ, Evans DL. Comparison of bronchoalveolar lavage findings and measurements of gas exchange during exercise in horses with poor racing performance.. N Z Vet J 1995 Oct;43(5):179-82.
- Fogarty U, Buckley T. Bronchoalveolar lavage findings in horses with exercise intolerance.. Equine Vet J 1991 Nov;23(6):434-7.
- Holcombe SJ, Robinson NE, Derksen FJ, Bertold B, Genovese R, Miller R, de Feiter Rupp H, Carr EA, Eberhart SW, Boruta D, Kaneene JB. Effect of tracheal mucus and tracheal cytology on racing performance in Thoroughbred racehorses.. Equine Vet J 2006 Jul;38(4):300-4.
- Ivester KM, Couëtil LL, Moore GE. An observational study of environmental exposures, airway cytology, and performance in racing thoroughbreds.. J Vet Intern Med 2018 Sep;32(5):1754-1762.
- Salz RO, Ahern BJ, Boston R, Begg LM. Association of tracheal mucus or blood and airway neutrophilia with racing performance in Thoroughbred horses in an Australian racing yard.. Aust Vet J 2016 Apr;94(4):96-100.
- Crispe EJ, Lester GD, Secombe CJ, Perera DI. The association between exercise-induced pulmonary haemorrhage and race-day performance in Thoroughbred racehorses.. Equine Vet J 2017 Sep;49(5):584-589.
- Preston SA, Riggs CM, Singleton MD, Troedsson MH. Descriptive analysis of longitudinal endoscopy for exercise-induced pulmonary haemorrhage in Thoroughbred racehorses training and racing at the Hong Kong Jockey Club.. Equine Vet J 2015 May;47(3):366-71.
- Sullivan SL, Anderson GA, Morley PS, Hinchcliff KW. Prospective study of the association between exercise-induced pulmonary haemorrhage and long-term performance in Thoroughbred racehorses.. Equine Vet J 2015 May;47(3):350-7.
- Hinchcliff KW, Jackson MA, Morley PS, Brown JA, Dredge AE, O'Callaghan PA, McCaffrey JP, Slocombe RE, Clarke AE. Association between exercise-induced pulmonary hemorrhage and performance in Thoroughbred racehorses.. J Am Vet Med Assoc 2005 Sep 1;227(5):768-74.
- Morley PS, Bromberek JL, Saulez MN, Hinchcliff KW, Guthrie AJ. Exercise-induced pulmonary haemorrhage impairs racing performance in Thoroughbred racehorses.. Equine Vet J 2015 May;47(3):358-65.
- Couetil L, Ivester K, Barnum S, Pusterla N. Equine respiratory viruses, airway inflammation and performance in thoroughbred racehorses.. Vet Microbiol 2021 Jun;257:109070.
- Back H, Weld J, Walsh C, Cullinane A. Equine Rhinitis A Virus Infection in Thoroughbred Racehorses-A Putative Role in Poor Performance?. Viruses 2019 Oct 18;11(10).
- Araneda OF, Cavada G. Atmospheric Pollutants Affect Physical Performance: A Natural Experiment in Horse Racing Studied by Principal Component Analysis.. Biology (Basel) 2022 Apr 30;11(5).
- Ainsworth DM, Erb HN, Eicker SW, Yeagar AE, Viel L, Sweeney CR, Lavoie JP. Effects of pulmonary abscesses on racing performance of horses treated at referral veterinary medical teaching hospitals: 45 cases (1985-1997).. J Am Vet Med Assoc 2000 Apr 15;216(8):1282-7.
- Seltzer KL, Byars TD. Prognosis for return to racing after recovery from infectious pleuropneumonia in thoroughbred racehorses: 70 cases (1984-1989).. J Am Vet Med Assoc 1996 Apr 15;208(8):1300-1.
- Kusano K, Hobo S, Ode H, Ishikawa Y. Tracheal Endoscopic and Cytological Findings and Blood Examination Results in Thoroughbred Racehorses Suspected to have Lower Respiratory Tract Disease.. J Equine Sci 2008;19(4):97-102.
- Gerber V, Straub R, Marti E, Hauptman J, Herholz C, King M, Imhof A, Tahon L, Robinson NE. Endoscopic scoring of mucus quantity and quality: observer and horse variance and relationship to inflammation, mucus viscoelasticity and volume.. Equine Vet J 2004 Nov;36(7):576-82.
- Raker C, Boles CL. Pharyngeal lymphoid hyperplasia in the horse. J Equine Med Surg 1978;2:202–207.
- McKane SA, Canfield PJ, Rose RJ. Equine bronchoalveolar lavage cytology: survey of thoroughbred racehorses in training.. Aust Vet J 1993 Nov;70(11):401-4.
- Bonsignore MR, Morici G, Vignola AM, Riccobono L, Bonanno A, Profita M, Abate P, Scichilone N, Amato G, Bellia V, Bonsignore G. Increased airway inflammatory cells in endurance athletes: what do they mean?. Clin Exp Allergy 2003 Jan;33(1):14-21.
- Wylie CE, Newton JR. A systematic literature search to identify performance measure outcomes used in clinical studies of racehorses.. Equine Vet J 2018 May;50(3):304-311.
- Depecker M, Richard EA, Pitel PH, Fortier G, Leleu C, Couroucé-Malblanc A. Bronchoalveolar lavage fluid in Standardbred racehorses: influence of unilateral/bilateral profiles and cut-off values on lower airway disease diagnosis.. Vet J 2014 Jan;199(1):150-6.
- Christley RM, Hodgson DR, Rose RJ, Hodgson JL, Wood JL, Reid SW. Coughing in thoroughbred racehorses: risk factors and tracheal endoscopic and cytological findings.. Vet Rec 2001 Jan 27;148(4):99-104.
- Burrell MH, Wood JL, Whitwell KE, Chanter N, Mackintosh ME, Mumford JA. Respiratory disease in thoroughbred horses in training: the relationships between disease and viruses, bacteria and environment.. Vet Rec 1996 Sep 28;139(13):308-13.
- Chapman PS, Green C, Main JP, Taylor PM, Cunningham FM, Cook AJ, Marr CM. Retrospective study of the relationships between age, inflammation and the isolation of bacteria from the lower respiratory tract of thoroughbred horses.. Vet Rec 2000 Jan 22;146(4):91-5.
- Newton JR, Wood JL, Chanter N. A case control study of factors and infections associated with clinically apparent respiratory disease in UK Thoroughbred racehorses.. Prev Vet Med 2003 Jul 30;60(1):107-32.
- Couetil L, Cardwell JM, Leguillette R, Mazan M, Richard E, Bienzle D, Bullone M, Gerber V, Ivester K, Lavoie JP, Martin J, Moran G, Niedźwiedź A, Pusterla N, Swiderski C. Equine Asthma: Current Understanding and Future Directions.. Front Vet Sci 2020;7:450.
- Hansbro NG, Horvat JC, Wark PA, Hansbro PM. Understanding the mechanisms of viral induced asthma: new therapeutic directions.. Pharmacol Ther 2008 Mar;117(3):313-53.
- Houtsma A, Bedenice D, Pusterla N, Pugliese B, Mapes S, Hoffman AM, Paxson J, Rozanski E, Mukherjee J, Wigley M, Mazan MR. Association between inflammatory airway disease of horses and exposure to respiratory viruses: a case control study.. Multidiscip Respir Med 2015;10:33.
- Millerick-May ML, Karmaus W, Derksen FJ, Berthold B, Holcombe SJ, Robinson NE. Local airborne particulate concentration is associated with visible tracheal mucus in Thoroughbred racehorses.. Equine Vet J 2013 Jan;45(1):85-90.
- Costa MF, Thomassian A. Evaluation of race distance, track surface and season of the year on exercise-induced pulmonary haemorrhage in flat racing thoroughbreds in Brazil.. Equine Vet J Suppl 2006 Aug;(36):487-9.
- Dauvillier J, Ter Woort F, van Erck-Westergren E. Fungi in respiratory samples of horses with inflammatory airway disease.. J Vet Intern Med 2019 Mar;33(2):968-975.
- Hough KP, Curtiss ML, Blain TJ, Liu RM, Trevor J, Deshane JS, Thannickal VJ. Airway Remodeling in Asthma.. Front Med (Lausanne) 2020;7:191.
- Bessonnat A, Hélie P, Grimes C, Lavoie JP. Airway remodeling in horses with mild and moderate asthma.. J Vet Intern Med 2022 Jan;36(1):285-291.
- Wilsher S, Allen WR, Wood JL. Factors associated with failure of thoroughbred horses to train and race.. Equine Vet J 2006 Mar;38(2):113-8.
- Uprety T, Sreenivasan CC, Hause BM, Li G, Odemuyiwa SO, Locke S, Morgan J, Zeng L, Gilsenan WF, Slovis N, Metcalfe L, Carter CN, Timoney P, Horohov D, Wang D, Erol E, Adam E, Li F. Identification of a Ruminant Origin Group B Rotavirus Associated with Diarrhea Outbreaks in Foals.. Viruses 2021 Jul 9;13(7).
Citations
This article has been cited 1 times.- Lo Feudo CM, Stucchi L, Stancari G, Conturba B, Bozzola C, Zucca E, Ferrucci F. Associations between Medical Disorders and Racing Outcomes in Poorly Performing Standardbred Trotter Racehorses: A Retrospective Study.. Animals (Basel) 2023 Aug 9;13(16).
Use Nutrition Calculator
Check if your horse's diet meets their nutrition requirements with our easy-to-use tool Check your horse's diet with our easy-to-use tool
Talk to a Nutritionist
Discuss your horse's feeding plan with our experts over a free phone consultation Discuss your horse's diet over a phone consultation
Submit Diet Evaluation
Get a customized feeding plan for your horse formulated by our equine nutritionists Get a custom feeding plan formulated by our nutritionists