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F.I.T.T Principle

F. I. T. T. Principle
 
Frequency: how often a person performs the targeted Health-related physical activity. For each component of health-related  fitness, a safe frequency is three to five times a week.
 
Intensity: how hard a person exercises during a physical activity period. Intensity can be measured in different ways, depending on the health-related component. For example monitoring heart rate is one way to gauge intensity during aerobic endurance activities, but gives no indication of intensity during flexibility activities.
 
Time: the length of the physical activity. Time varies depending on the health-related fitness component targeted. (sets and reps, seconds, minutes, hours, etc)
 
Type: type or specificity, refers to the specific physical activity chosen to improve a component of Health-related physical activity.
 
Perceived Exertion
 
 

Health Related

Skill Related

Preparing for Exercise

Target Heart Rate

Cardiovascular System

Exercise Specifics

Body Composition