The Recommended Cardiorespiratory Endurance Exercise Training Program for Older Individuals

The recommended cardiorespiratory endurance exercise training program for older individuals should be __________.

A) 40% to 60% of maximum HR, 20 to 30 minutes continuously, 3 days per week.
B) 50% to 70% of HRR, 20 to 30 minutes (multiple sessions of 5-10 min) , 3 days per week.
C) 40% to 60% of maximum HR, 20 to 30 minutes (multiple sessions of 5-10 min) , 3 days per week.
D) 50% to 70% of HRR, 20 to 30 minutes continuously, 3 days per week.