Ex Phys Lab 2 - Laboratory 2 Peak Oxygen Uptake David Jones...

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Laboratory 2: Peak Oxygen Uptake David Jones
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INTRODUCTION: Researchers have studied the oxygen uptake of subject’s in order to accurately measure the oxygen and carbon dioxide content. By measuring this one can determine a subject’s cardiopulmonary fitness. The open-circuit method is one of the most extensively used procedures to measure this. This involves the subject to inhale the air in the room and exhale into a collection device. The contents in the collection devise are later analyzed for the pre-mentioned data. This procedure will be performed while the subject is doing a maximal cycle ergo meter test. METHODS: Data collected within this study were Actual VO2 Max, Predicted VO2 Max, body weight (kg), height (cm), Heart Rate (bpm), and Rate of Perceived Exhaustion (RPE). The Predicted VO2 Max is calculated by the use of a cycle ergo meter chart previously constructed as it relates to bodyweight. Height and body weight is measured just as it was in lab 1. All same protocols were followed. To administer the cycle ergo meter test the subject stood beside the seat on the machine so we could adjust the seat accordingly. The seat height should be approximately at the level of the hips. Once seat was adjusted the subject was placed on the machine and his feet were securely fastened into the toe clips. Head gear was placed on the subject and then fitted with a mouthpiece to aid in the collection of oxygen uptake.
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The headgear is then adjusted to the subject’s comfort level. Once everything is set and comfortable the subject was instructed to begin pedaling keeping the rpm’s above 60, but below 75. The power output when started was 75 watts. This power output is used as a two minute warm-up prior to the start of the test. Once the test was started we increased the wattage by 25 watts every two minutes. This procedure is followed until the subject has reached total exhaustion. At every two minute stage heart rate and RPE measurements were taken and recorded. The heart rate is measured through electronic telemetry sensors within the handles of the bike. These
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