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Unformatted text preview: MAXIMAL AEROBIC POWER I. DIRECT MEASUREMENT OF MAXIMAL AEROBICPOWER A. Physiological Determinants of V02max. The maximum oxygen uptake provides important information on the capacity of the oxygen transport system. The most important factors that determine V02 max. in a given person are: The ability to ventilate the lungs and oxygenate the blood passing through the lungs The ability of the heart to pump blood - cardiac output The oxygen carrying capacity of the blood The ability of the working muscles to accept a large blood supply The ability of muscle fibers to extract oxygen from the capillary blood and use it to produce energy - oxidative enzyme levels, etc. PUPPJN.” As the duration of events requiring heavy continuous energy expenditure becomes progressively greater than one minute, aerobic capacity becomes increasingly important as a determining factor for success. B. Typical Values for V02max (ml-kg'l-min'lz 1. Untrained Canadian male (20-29 years) 40-50 2. Untrained Canadian female (20-29 years) 30-40 3. World class endurance athlete (M) 80-90 4. World class endurance athlete (F) 65-75 5. Soccer, ice hockey, basketball (M) 54-60 6. Baseball, football, thrower, sprinter 40-50 C. mzmax. Test Protocols 1. The test protocol should exceed 6 minutes but be less than approximately 15 min. 2. Incorporate a warmup period - first stage of test 3. The test protocol should be arranged in stages, with each stage progressively increasing in intensity until the termination criteria is reached. D. Criteria For Attainment of V02max 1. The oxygen consumption ceases to increase linearly with increasing work rate and approaches a plateau, the last two values agreeing within + 2 ml/kg/min. 2. Heart rate should be close to the age-predicted maximum (220 - age). This is test and protocol dependent. 3. Blood lactate levels should be 8 millimoles/liter or greater, 3-5 minutes post exercise. ...
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