Topic 3: Cardio-respiratory physiology (14 marks) In Practical 5…
Question Answered step-by-step Topic 3: Cardio-respiratory physiology (14 marks) In Practical 5… Topic 3: Cardio-respiratory physiology (14 marks)In Practical 5 ‘Cardiovascular responses to exercise’, we had volunteers undertake upper and lower body exercise at different intensities. In a new experiment, we had one volunteer undertake an incremental exercise test to examine changes in both metabolic and respiratory variables. Each variable was measured at 4 different time points (%VO2max). Use the results from the Table below to discuss why the variables changed (increase, decrease or stayed same) from low intensity exercise (25% of VO2max) to high intensity exercise (100% of VO2max -exhaustion) (each variable (7) is worth 2 marks).For example, explain the physiological reason why PAO2 begins to increase at 50% VO2max. Similarly, but the opposite for PaO2, why does it decrease just after 50%? In addition, does an increase in PAO2 and decrease in PaO2 towards the end VO2 max have any impact on the performance of the individual? Table 3.Variable25% VO2max50%VO2max75%VO2max100%VO2maxExplanationPaO2 mmHg98989592 PAO2 mmHg104105110117 PaCO2 mmHg44443930 Pulmonary Ventilation (VE, l.min)355580140 Arterial pH 7.47.47.357.1 Femoral PVCO258616467 – Femoral PVO225222015 Biology Science Physiology HEALTH NTR20003 Share QuestionEmailCopy link Comments (0)
