What does the F.I.T.T acronym stand for in the context of developing aerobic fitness?

The F.I.T.T. acronym stands for Frequency, Intensity, Time, and Type, and it is a foundational principle for developing an effective aerobic fitness program. The correct choice provides appropriate recommendations that reflect optimal parameters for improving cardiovascular health and endurance.

In this context, Frequency refers to the number of exercise sessions per week. Engaging in aerobic activities 3 to 5 times a week is consistent with established guidelines that promote fitness gains while allowing for adequate recovery.

Intensity is crucial in determining how hard an individual works during exercise. The stated range of 60-90% of Maximum Heart Rate (MHR) represents a moderate to vigorous intensity level, which is effective for improving cardiovascular fitness and is commonly recommended for individuals looking to enhance their aerobic capacity.

Time refers to the duration of each exercise session. The guidance of 20 minutes aligns with recommendations for sustained aerobic activity that helps to improve endurance and overall cardiovascular health. Shorter durations may be less effective in maintaining and enhancing aerobic capacity.

Type refers to the kind of exercise performed, and aerobic activities may include running, cycling, swimming, or any exercise that elevates the heart rate for an extended period.

By adhering to these parameters—3 to 5 times a week, at an intensity of