Muscle Contractions

• Name the 2 types of muscle contractions.

  Isotonic and Isometric
• Define isotonic.


  Isotonic muscle contractions are those that result in movement.
• Define isometric.

  Isometric muscle contractions are where the muscles contract but there is no visible movement.
• During isotonic muscle contractions the type of contraction is either concentric or eccentric.
• Define a concentric muscle contraction.

  Concentric muscle contraction is when the muscle shortens during the contraction e.g. bicep muscle contracting to lift a weight during bicep curls.
• Define an eccentric muscle contraction.

  Eccentric muscle contraction is when the muscle lengthens during the contraction e.g. bicep muscle contracting to lower the weight during bicep curls.