Regular exercise plays an important role in the prevention of heart disease. Exercise also helps control blood-related health problems like diabetes and high blood pressure. Exercise benefits the heart by helping it work more efficiently while you exercise and while you rest.
You can improve your physical fitness by using the FIT formula. The best programs for improving physical fitness take into account frequency (how often), intensity (how strenuous), and time (how long).
Here is the FIT formula:
FIT = F x I x T
F = frequency (days per week)
I = intensity (percent of heart rate increase)
T = time (minutes for each session or day)
The American Heart Association recommends that exercise programs for the heart, lungs and circulation should include any vigorous activity that is done 3-4 days each week, increases the heart rate 50-75%, and lasts for 30-60 minutes.
Activities that are especially beneficial when performed regularly include
brisk walking, hiking, stair-climbing, aerobic exercise, jogging, running, bicycling, rowing and swimming.
Jamie decided to calculate minimum and maximum FIT numbers using the formula given above.
For the FIT minimum, she assumed the activity is done 3 days each week, increases the heart rate by 50%, and lasts for 30 minutes per session. She converted 50% to the decimal number 0.50 and made the following calculation:
Use the information you’ve been given to calculate the FIT maximum.