Aerobic Exercise Prescription

Question 1

Aerobic Exercise Indications

Answer 1

1) Reduced cardiorespiratory endurance

2) Primary/secondary prevention of cardiovascular disease

Question 2

Mode of Aerobic Exercise

Answer 2

Rhythmic activities taht use large muscle groups that can be performed continuously and safely: i.e. walking, hiking, running, biking, cross-country skiing, skating, stair climbing, swimming, etc)

Question 3

How is appropriate Intensity of Aerobic Exercise determined? (aka Target HR Zone, THR)

Answer 3

Established from lower and upper HR limits depending on pt’s age, fitness level, health status, and goals using 1 of 2 formulas: HRmax or HRR/Karvonen Formula

Question 4

HR max formula for Target HR

Answer 4

Lower THR = HRmax * 55%

Upper THR = HRmax * 90%

Question 5

HRR aka Karvonen Formula for Target HR

Answer 5

Lower THR = [(HRmax-HRrest) x 40%)] + HRrest

Upper THR = [(HRmax-HRrest) x 85%)] + HRrest

Question 6

Duration of Aerobic Exercise

Answer 6

20-60 minutes depending on intensity (moderate is recommended)

Question 7

Frequency of Aerobic Exercise

Answer 7

3-5 days per week

Question 8

Normal Cardiorespiratory Response to acute Aerobic Exercise (4)

Answer 8

1) Inc O2 consumption from inc CO, inc blood flow, and inc O2 utilization in skeletal muscles
2) Linear increase in SBP wit increasing workload (8-12 mmHg per MET)
3) No change or moderate decrease in DBP
4) Inc RR and tidal volume