1. Types of Muscle Contractions A REALLY bad Cramp Pushing the Wall Bicep Curl Landing from a high place How Muscles Generate Force

2. Twitch Contractions A quick, jerky response to a stimulus –Play a minimal role in normal muscle activity

3. Tetanic Contraction Produced by a series of stimuli bombarding the muscle in rapid succession Contractions melt together and result in a sustained contraction or tetanus A BAD Cramp

4. Isometric The muscle if fired against a load, but DOES NOT Shorten or Lengthen Fires at a constant Length Carrying an object in front of you without dropping it

5. Concentric ShortensA muscle firing against a load Shortens causing movement at the joint Isotonic –R–R–R–Resistance through most of the ROM –R–R–R–Resistance decreases after a certain point –G–G–G–Gravity Assists Isokinetic –R–R–R–Resistance through the full ROM

6. Eccentric Muscle fibers are lengthening WHILE they are firingMuscle fibers are lengthening WHILE they are firing Controlling MovementControlling Movement Lowering a heavy weightLowering a heavy weight Landing from a jumpLanding from a jump DeceleratingDecelerating