1. Heart rate response

2. Questions you might have: How does the heart rate respond to exercise? Does it respond differently to maximal and submaximal exercise? If so, how? How does the heart rate differ between the rest, exercise and recovery phases of movement?

3. Maximal exercise What do the letters represent? Discuss with your partner. A = B = C = E = F =

4. Submaximal exercise A = B = D = E = F = TRY THESE ON YOUR OWN AND WRITE A BRIEF DESCRIPTION OF WHAT EACH LETTER REPRESENTS

5. Discuss with your partner why the graphs look so different? Use the words that letters A-F represent, to help you with your answer.

6. Jan 05 - Qu 2: During physical performance, the nervous system controls the body’s responses. (c) A 17-year-old runs 400 metres with maximum effort in 60 seconds. Describe the variations in heart rate and how these changes are achieved during the: (i)Rest period immediately prior to the start of the 400 metres.(3 marks) ___________________________________________________________________________________________________________________ ___________________________________________________________________________________________________________________ (ii)The 400 metre race (exercise period)(4 marks) ___________________________________________________________________________________________________________________ ___________________________________________________________________________________________________________________ ___________________________________________________________________________________________________________________ ___________________________________________________________________________________________________________________ __________________________________________________________________________________________________________________ (iii) Five-minute recovery period after the 400 metres.(3 marks) ___________________________________________________________________________________________________________________ ___________________________________________________________________________________________________________________

7. REST PHASE Anticipatory rise ……………… …..…………… due to …………………. which is released by the sympathetic nervous system. This leads to a decrease in activity of the ……………………………….. nervous system.

8. EXERCISE PHASE During exercise, the heart rate increases rapidly. Proprioceptors detect....................... Production of ……… increases blood acidity which is detected by …………………………. in the aorta. There are increased ……………………………… nerve stimulations which in turn stimulate the SAN.

9. RECOVERY PHASE The heart rate is ……………….. and this stimulates ………………………. There are increased parasympathetic nerve impulses and therefore decreased …………………………… stimulation The heart rate is maintained then …………… rapidly.

10. Jun 2001 - Qu 4: Performance may develop as a result of exercise and learning. (a)(i) Explain what happens to your heart rate prior to exercise. (2 marks) _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ (ii) Exercise causes the heart rate to change. Explain what causes these changes.(4 marks) _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________