Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.5/7179
Título: The relationship between body composition, training and race performance in a group of Thoroughbred flat racehorses
Autor: Fonseca, R.G.
Kenny, D.A.
Hill, E.W.
Katz, L.M.
Palavras-chave: Horse
Racehorse
Training
Body composition
Fat-free mass
Performance
Data: Set-2013
Editora: Equine Veterinary Journal
Citação: Fonseca, R.G., Kenny, D.A., Hill, E.W., & Katz, L.M. (2013). The relationship between body composition, training and race performance in a group of Thoroughbred flat racehorses. Equine Veterinary Journal, 45(5), 552–557. doi: 0.1111/evj.12024
Resumo: Reasons for performing study: Few noninvasive measures associated with performance assessment are available for racehorse trainers. Evaluation of body composition of superior human sprinters has revealed a lower fat mass (FM), percentage (%) fat and greater fat-free mass (FFM), but to date there have been few studies evaluating this in racehorses. Objectives: To determine the effects of age, gender and training on body composition and the relationship between body composition, physiological measurements and performance in Thoroughbred racehorses. Methods: At 2, 5 and 8 months of training, rump fat thickness (RFT)was ultrasonographically measured in 1-, 2- and 3-year-old Thoroughbreds (n = 148), with FM, % fat and FFM calculated. Speed, heart rate, plasma lactate and serum creatine kinase concentrations were recorded during each fast work session. Training duration (number of training days) and intensity (number of fast work sessions) were collated for each training period. Retrospective racing performance was used to categorise horses as elite or nonelite. Results: FFMwas greater in males (P = 0.006) at all training stages. Therewere no interactions between training duration, intensity, gender and age (P>0.05); all effects were linear. Training duration had a negative effect on RFT (P = 0.0002), FM (P<0.0001) and % fat (P<0.0001) and a positive effect on FFM (P = 0.01). Training intensity had a negative effect on RFT (P = 0.009),FM(P<0.0001), % fat (P<0.0001) and FFM (P<0.0001). FFMwas greater for elite vs. nonelite horses at all training stages (P = 0.003), for males (P = 0.05) and females (P = 0.04) and for 2- (P = 0.002) and 3-year-olds (P = 0.02). Conclusions: While age and training affect body composition, FFM is associated with performance. Potential relevance: Body composition assessment may assist fitness and performance evaluation.
Descrição: Articles in International Journals
Peer review: yes
URI: http://hdl.handle.net/10400.5/7179
DOI: 0.1111/evj.12024
ISSN: 0425-1644
Aparece nas colecções:CIISA - Artigos em revistas internacionais



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