Explain the physiological mechanisms which cause Bertha respiratory rate to change during exercise Cues vital signs before exercise: Rr 14bpm  Sp02 98%, BP 130/70,Hr 74 After exercise Rr 20bpm, HR 90,BP 140bpm

Discuss and conclude the results given for the effects of exercise on breathing and heart rate.

The functional parameters of respiration change with aerobic training True O False

Consider the graph below showing the effect of altitude on ventilation rate in 25 healthy, non-smoking males after different exercise intensities. Ventilation rate / dm³ min-1 601 50- 40- 30- 20- 10- 0+ PREGNALI DOM Sea level 4000 m Key: rest 20% of maximal aerobic power 30% of maximal aerobic power 40% of maximal aerobic power a. Identify the independent and dependent variables. [1] b. Compare and contrast the effect of increasing exercise intensity at sea level and at an altitude of 4000 m. Refer specifically to the graph. [2] C. At 4000m the availability of oxygen is lower than at sea level. Explain why the pattern seen in ventilation rate occurs by referring to external respiration. [2]