(a(i))[2]
Write a suitable hypothesis for this investigation.
(a(ii))[2]
Describe a method the students could use to measure their pulse.
(b)[2]
Describe the effect a blockage in the coronary artery has on the heart.
(c)[6]
Describe and explain how exercise affected the average heart rate recovery of the coronary heart disease patients in group A and group B. Support your answer with data from Fig. 2.1.
(d)[1]
Exercise may lower the risk of coronary heart disease. State one other possible method of reducing the chance of developing coronary heart disease.