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Titolo:
EFFECTS OF HYPERHYDRATION ON CARDIORESPIRATORY AND METABOLIC RESPONSES TO EXERCISE IN HORSES DURING A SIMULATED 2ND DAY OF THE 3-DAY-EVENT
Autore:
LEON LAS; HODGSON DR; EVANS DL; CARLSON GP; ROSE RJ;
Indirizzi:
UNIV SYDNEY,DEPT VET CLIN SCI SYDNEY NSW 2006 AUSTRALIA UNIV CALIF DAVIS,SCH VET MED,DEPT MED DAVIS CA 95616 UNIV SYDNEY,DEPT ANIM HLTH SYDNEY NSW 2006 AUSTRALIA UNIV SYDNEY,DEPT ANIM SCI SYDNEY NSW 2006 AUSTRALIA
Titolo Testata:
Pferdeheilkunde
fascicolo: 4, volume: 12, anno: 1996,
pagine: 459 - 462
SICI:
0177-7726(1996)12:4<459:EOHOCA>2.0.ZU;2-I
Fonte:
ISI
Lingua:
ENG
Keywords:
FLUID; ELECTROLYTES; HYPERHYDRATION; PLASMA VOLUME; HORSES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
10
Recensione:
Indirizzi per estratti:
Citazione:
L.A.S. Leon et al., "EFFECTS OF HYPERHYDRATION ON CARDIORESPIRATORY AND METABOLIC RESPONSES TO EXERCISE IN HORSES DURING A SIMULATED 2ND DAY OF THE 3-DAY-EVENT", Pferdeheilkunde, 12(4), 1996, pp. 459-462

Abstract

We hypothesised that hyperhydration before prolonged exercise would increase and maintain plasma volume (PV), assisting thermoregulation and cardiorespiratory function. In a cross-over design, 7 horses received approximate to 26 L (6% bodyweight) of isotonic fluid or nothing (control). Horses undertook 98 min of treadmill exercise at intensities eliciting 20-60% VO2max (24.5 degrees C and 60% RH) to simulate 2nd dayof a 3-day event. Results (mean+/-sem, P<0.05) at the end of the testin the treated group when compared with control showed: a lower TP (69+/-2 vs 77+/-2 g/L) indicating PV expansion; a higher HR but no differences in Q and SV; and lower venous pH, HCO3-. Core temperature remained unchanged despite higher bodyweight losses (25.7+/-1.7 vs 17.1+/-0.9 kg), mainly as sweat. Hyperhydration does maintain PV during prolonged exercise but does not assist thermoregulation and may adversely affect acid-base balance.

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Documento generato il 27/05/20 alle ore 15:40:20