Relationship between body composition, blood volume and maximal oxygen uptake

• DOI: 10.1111/j.2042-3306.2002.tb05470.x
• Publication Date: 2010-06-15T04:34:57Z
• Authors: C. F. KEARNS; K. H. McKEEVER; H. JOHN‐ALDER; T. ABE; W. F. BRECHUE
• Keywords: Rump

Summary It has long been known that body mass and, more specifically, lean are strongly correlated with maximal oxygen uptake (V̇O 2max ) in man and animals. However, there no data to date describing this phenomenon the horse. The purpose of paper is examine relationship between composition V̇O Twenty‐three healthy unfit Standardbred mares performed an incremental exercise test (GXT) measure . Rump fat thickness (RTH), a covering, was measured using B‐mode ultrasound. Plasma volume, total blood volume red cell were determined, Evan's Blue dye dilution technique packed volume. (r = 0.541; P<0.01) haematocrit (exHCT; r 0.407; P<0.05) but not RTH or other haematological variables. To eliminate influence on individual variables, regression analysis mass‐residuals , RTH, plasma exHCT. residuals negatively −0.687; P 0.0003) positively exHCT 0.422; 0.045) could be predicted from linear combination 0.767; P<0.0001). These indicate horse significantly related fat‐free (FFM), independent mass. Red cells splenic reserve constitute important factor horse's ability achieve high Therefore, may appropriate basis for assessing metabolic function athletic