Exercise Physiology and Kinesiology

Question 1

ATP-PC or Phosphagen system

Answer 1

 ATP production during high intensity, short duration exercise like sprinting 100m.
 Provides energy for muscle contraction for up to 15 seconds.

Question 2

Anaerobic glycolysis or lactic acid system

Answer 2

 ATP production during high intensity, short duration exercise like sprinting 400-800m.
 Stored glycogen is split into glucose through glycolysis, split into pyruvic acid, which releases energy and forms ATP.
 Results in lactic acid.
 50% slower than ATP-PC system.
 Can provide 30-40 seconds of muscle contraction.

Question 3

Aerobic or oxygen system

Answer 3

 Used during low intensity, long duration exercise.
 Provides energy through the oxidation of food.
 Combination of fatty acids, amino acids, and glucose with oxygen releases energy that forms ATP.

Question 4

Class 1 Lever

Answer 4

Axis of rotation (fulcrum) is between the effort (force) and resistance (load). Example: seesaw or biceps curl

Question 5

Class 2 Lever

Answer 5

Load is between the axis of rotation and effort. Examples: Wheelbarrow or push up

Question 6

Class 3 Lever

Answer 6

Effort between axis of rotation and resistance. Example: shoulder abduction with weight at wrist