SPEX 210 Lab Stuff exam 2023 with 100% correct answers

For a 63kg adult female performing a 30 second anaerobic power (Wingate) test and a 90 second anaerobic capacity test (on separate days!), what will be the correct flywheel resistance(s) to use? - correct answer5.4kp (power) & 3.2kp (capacity) True or false: during a 90 second anaerobic capacity test, it is important that the subject does not pedal too fast at the start of the test or they risk fatiguing excessively towards the end of the test. - correct answerFalse The Wingate 30 second sprint test is - correct answerA predominantly anaerobic test, but with significant contribution from the aerobic system During a 30 sec Wingate test the resistance is set at 7.0 kp. During the first 5 seconds of the test the average pedal revolution rate is 120rpm. What is the peak power output achieved during this 5s period? (Remember one pedal revolution on the Monark cycle ergometer is equivalent to 6 metres of travel on the flywheel.) - correct answerThe correct answer is 824 Watts!! PO = F x d / t PO = (7.0 x 9.81) x (120 x 6 x 1) / 60 = 824 Watts Lactate accumulation is the main cause of fatigue in skeletal muscle (True or False) - correct answerFalse Which of the following plays a significant role in the production of lactate during repeated high intensity muscle contractions? - correct answerPhosphofructokinase - PFK and LDH are both important glycolytic enzymes that lead to lactate production. Sympathetic neurohormonal activation essentially refers to the release of epinephrine during intense exercise which activates glycolysis ("fight or flight"). Release of insulin is in fact suppressed during exercise and has no role in glycolysis and the production of lactate.