MAXIMAL ACCUMULATED OXYGEN DEFICIT OF RESISTANCE TRAINED MEN 404

Abstract

The primary purpose of the study was to compare maximal accumulated oxygen deficit (MAOD) in resistance trained (RT, N=11), endurance trained (ET, N=10) and untrained men (UT, N=12). A secondary purpose was to determine the influence of leg muscle mass (MM) on MAOD by examining the relationship between MM and MAOD and by comparing MAOD expressed relative to MM between the groups. MAOD was determined during 2-4 min of constant-load fatiguing cycling. Leg muscle mass was estimated via anthropometric measurements(Mean±SE). Table # significant (p<0.05) difference compared to UT and ET, * significant difference compared to UT. A significant positive correlation was observed between MAOD (l O2 eq) and MM (kg) for RT only (RT r=0.85, ET r=0.55, UT r=0.20). Based on the correlational and mean MM data, the higher MAOD (l O2 eq) in RT relative to ET and UT is predominantly the result of their larger leg muscle mass. The mean data for the relative expression of MAOD (ml O2 eq·kg-1 MM) suggest that there are also anaerobic metabolic adaptations that may contribute to the higher MAOD in RT and ET compared to UT.