The document discusses the overload principle, which is placing a greater than normal load on a body system to cause it to overcompensate and improve. It describes aerobic and anaerobic activities, utilizing the overload principle for weight training and cardiovascular exercise. It notes that muscle mass and size can increase through hypertrophy when using the overload principle regularly, but will atrophy with lack of use. Finally, it lists the five components of physical fitness and asks which is most critical for health.

1. DEFINITIONS
• Overload Principle- Placing a load on a
body system that is greater than what it
is used to causing overcompensation
• Body System- A group of organs or
tissues that have a common function.
(Skeletal, muscular, immune, nervous,
etc.)

2. Aerobic and Anaerobic
• Aerobic: long in duration and
moderate in intensity
• Anaerobic: short in duration and
high in intensity
• What are some examples of each
kind of activity?

3. UTILIZING THE
OVERLOAD PRINCIPLE
An anaerobic workout (the Weight Room)
Resistance
Reps/Sets
Recovery/Rest Time

4. UTILIZING THE
OVERLOAD PRINCIPLE
AN AEROBIC WORKOUT (FIT)
• Frequency = How OFTEN
• Intensity = How HARD (Pace)
– Decrease time, same distance
– Increase distance, same time
• Time = How LONG
– Same pace for longer time

5. THE OVERLOAD
PRINCIPLE
USE IT OR LOSE IT
ATROPHY- Decrease in muscle mass/size
HYPERTROPHY- Increase in muscle
mass/size

6. 5 COMPONENTS OF
PHYSICAL FITNESS
• CARDIOVASCULAR FITNESS - how
well the heart and lungs work over an
extended period of time
• MUSCULAR STRENGTH - the force a
muscle can exert
• FLEXIBILITY - the ability to take a joint
through a full range of motion

7. 5 COMPONENTS OF
PHYSICAL FITNESS
• MUSCLE ENDURANCE - the ability to
produce force over an extended period
of time
• BODY COMPOSITION - the ratio of
lean body mass/body fat
Which is most critical to health?