LC BIOLOGY EXPERIEMENTS: BREATHING/PULSE RATE

State two dietary changes that would help to prevent coronary heart disease!

Decrease salt intake
Decrease alchol consumption

At the start of the investigation the resting rate is established.
What is the purpose of this step?

comparison with later rates

Explain how the resting rate was measured!

(3 points)

• locate pulse/ observe breathing

• count heartbeats/ breaths

• repeat and find the average

Describe the effect of ten minutes of intense exercise on the resting rate!

increase in rate

How is recovery time measured?

time how long it takes breathing/pulse rate to return to resting rate

What effect would regular exercise have on recovery time?

reduce it