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The Mann-Whitney U-test is used to test whether two independent samples of observations are drawn from the same or identical distributions. An advantage with this test is that the two samples under consideration do not necessarily need to have the same number of observations or instances.
Maximal Stress Test and YMCA Bike Test. The purpose of this section of the lab is to: Perform a maximal stress test with an ECG on another student. Determine a prediction of peak oxygen consumption determined by the time on the GXT. 3 The student should perform at least 1 submaximal YMCA protocol. Treadmill Test: Bruce Protocol. When deciding on the mode by which to administer a graded maximal exercise test (GXT), the treadmill generally produces the best outcomes for most populations.