      Heart rate Resting Heart Rate Working Heart Rate Maximum Heart Rate Target Heart Rate/Target zone Recovery Rate ◦ Pg 78-79

Event 100m 200m 400m 800m 1500m 3000m Predicted time if we could work at the same pace throughout the event Current World Record (to nearest second) 10 secs 19 secs 40 secs 1 min 20 secs 2 mins 30 secs 5 mins 10 secs 19 secs 43 secs 1 min 41 secs 3 mins 26 secs 7 mins 21 secs

 ◦ ◦ Aerobic Activity Working with oxygen If exercise is not too fast and is steady, the heart can supply all the oxygen muscles need  ◦ ◦ ◦ Anaerobic Activity Working without oxygen If exercise is done in short, fast bursts, the heart cannot supply the muscles with the blood and oxygen they need to release energy for exercise.

Muscles work without oxygen and repay the oxygen debt once the exercise has been completed.

Glucose (from Carbohydrates) is broken down in our tissues in the presence of Oxygen to release energy.

Glucose Oxygen Carbon Dioxide Water Energy

 If the level of exercise is too intense, oxygen cannot be supplied quickly enough to release energy aerobically.

Glucose Energy Lactic Acid   During recovery from anaerobic exercise the performer will still be breathing heavily even if they are not working hard.

This is so that they can pay back the oxygen debt that they have developed.

 ‘The amount of oxygen consumed during recovery, above that which would normally have been used at rest. It results from a shortfall in availability of oxygen during exercise.’

200 180 160 140 120 100 80 60 40 20 0 0 2 4 6 8 10 12 14 16 18 20 Time (mins) Session 1 Session 2

180 160 140 120 100 80 60 40 20 0 TARGET ZONE Upper threshold Lower threshold 0 1 2 3 4 5 Time (mins) 6 7 8 9 10 11 12

      Heart rate Resting Heart Rate Working Heart Rate Maximum Heart Rate Target Heart Rate/Target zone Recovery Rate   Aerobic Anaerobic