Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Plasma cortisol and ACTH concentrations in the warmblood horse in responseto a standardized treadmill exercise test as physiological markers for evaluation of training status
Autore:
Marc, M; Parvizi, N; Ellendorff, F; Kallweit, E; Elsaesser, F;
Indirizzi:
Fed Agr Res Ctr, Inst Anim Sci & Anim Behav, D-31535 Neustadt, Germany FedAgr Res Ctr Neustadt Germany D-31535 ehav, D-31535 Neustadt, Germany
Titolo Testata:
JOURNAL OF ANIMAL SCIENCE
fascicolo: 7, volume: 78, anno: 2000,
pagine: 1936 - 1946
SICI:
0021-8812(200007)78:7<1936:PCAACI>2.0.ZU;2-H
Fonte:
ISI
Lingua:
ENG
Soggetto:
PITUITARY VENOUS-BLOOD; ARGININE-VASOPRESSIN; ADRENAL AXIS; ADRENOCORTICOTROPIN; METABOLITES; SECRETION; INSULIN; STRESS;
Keywords:
corticotropin; fitness; horses; hydrocortisone; performance; training;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
26
Recensione:
Indirizzi per estratti:
Indirizzo: Elsaesser, F Fed Agr Res Ctr, Inst Anim Sci & Anim Behav, D-31535 Neustadt, Germany Fed Agr Res Ctr Neustadt Germany D-31535 Neustadt, Germany
Citazione:
M. Marc et al., "Plasma cortisol and ACTH concentrations in the warmblood horse in responseto a standardized treadmill exercise test as physiological markers for evaluation of training status", J ANIM SCI, 78(7), 2000, pp. 1936-1946

Abstract

Reliable physiological markers for performance evaluation in sport horses are missing. To determine the diagnostic value of plasma ACTH and cortisol measurements in the warmblood horse, 10 initially 3-yr-old geldings of the Hannovarian breed were either exposed to a training schedule or served as controls. During experimental Phase 1, horses were group-housed, and half ofthe horses were trained for 20 wk on a high-speed treadmill. During Phase 2, groups were switched and one group was trained for 10 wk as during PhaseI, whereas the control group was confined to boxes. During Phase 3 horses were initially schooled far riding. Thereafter, all horses were regularly schooled for dressage and jumping, and half of the horses received an additional endurance training for 24 wk. During all phases horses were exposed atregular intervals to various standardized treadmill exercise tests. Duringand after the tests frequent blood samples were taken from an indwelling jugular catheter for determination of ACTH and cortisol. Treadmill exercise increased both hormones. Maximum ACTH concentrations were recorded at the end of exercise, and maximum cortisol levels were recorded 20 to 30 min later. Except for one test there were no differences in ACTH levels between trained horses and controls. There was no significant effect of training on the cortisol response (net increase) to treadmill exercise in any of the tests during Phase 1. During Phase 2 higher cortisol responses were recorded incontrols than in trained horses (P less than or equal to .05) after 10 wk of training (controls confined to boxes). During Phase 3 plasma cortisol responses were also higher in controls than in trained horses (P less than orequal to .05 after 6, 18, and 24, P less than or equal to .07 after 12 wk of training) when the inclination of the treadmill was 5%, but not at 3%. There was no overlap in net cortisol responses at 30 min between trained anduntrained horses. An ACTH application after 24 wk of braining resulted in higher cortisol responses in controls than in trained horses (P less than or equal to .05), without any overlap between the groups at 30 min after ACTH. Plasma cortisol responses to either treadmill exercise or ACTH injectionmay be a reliable physiological marker for performance evaluation. Prerequisites are sufficient differences in training status and sufficient intensity of exercise test conditions.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 26/11/20 alle ore 19:46:07