Speed associated with plasma pH, oxygen content, total protein and urea in an 80 km race

Abstract

SummaryTo test the hypothesis that endurance performance may be related quantitatively to changes in blood, we measured selected blood variables then determined their reference ranges and associations with speed during an 80 km race. The plan had 46 horses in a 2 x 2 factorial design testing a potassium-free electrolyte mix and a vitamin supplement. (enabling then, perhaps, limiting). Stepwise regressions also included plasma urea concentration (limiting). The association of speed with less plasma acidity and urea suggests the potential for fat adaptation and protein restriction in endurance horses, as found previously in Arabians performing repeated sprints. Conditioning horses fed fat-fortified and protein-restricted diets may not only improve performance but also avoid grain-associated disorders.

Hydration and electrolyte balance in horses during an endurance season

“…2003). An association between plasma [Na + ] and TP and speed was also reported during a 80 km race (Hoffman et al . 2002).…”

Do hematologic constituents really increase due to endurance exercise in horses?

“…Endurance rides happen at a lower intensity than thoroughbred racing (Hoffman et al 2002). In endurance efforts, two physiological events can contribute to HT elevation.…”

Acid‐base imbalances during a 120 km endurance race compared by traditional and simplified strong ion difference methods

“…Recent studies of acid‐base balance in endurance horses have determined the alterations of some variables using a quantitative approach (Hoffman et al . 2002; Hess et al .…”