Interpett your results: a Start with the basic: What happens to the metabolic rate during exercise? What is generated as a waste product of glucose catabolism? b What does this waste product do to the pH of the blood? Why? e What sort of ventilatory response does this change in pH cause (increase or decrease in rate/depth of ventilation)? Why? d Now apply this information to your results: (1) What happened to the respiratory rate during and affer exercise? Why? (2) What happened to the pH of the water after exercise? Why? (3) What happened to the respiratory rate and the pH of the water after resting? Why?