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There are many types of strength training and the different types can determine the results you achieve:
  • Isometric - is force against resistance, but does not move. Therefore does not shorten or lengthen the muscles or cause joint movement. Core muscles react extremely well.
  • Isokenetic - is dynamic action kept at a constant velocity, shortening and lengthening of muscles is constant. A good example is using machine weights that use a pulley.
  • Dynamic Constant External Resistance (DCER) - is generally weight training where there is a sticking point and varying resistance during motion.
  • Concentric - when a muscle overcomes a load and shortens e.g. upward motion of bicep curl.
  • Eccentric - muscle is overcome by a load and lengthens, e.g. bicep letting go and downward motion of a bicep curl. This is thought to be the most important part of the exercise.
Just a little more on Concentric and Eccentric, it is now believed that the eccentric motion is the most important part of the exercise and people are working on a 1:3 ratio. So again using the bicep curl as an example, it is basically allowing 1 second for the upward movement and then 3 seconds to bring it back down. This has proven to increase results. This is due to the muscle letting go at a slow steady rate which increase the micro tears which occur deep in the muscle to generate hypertrophy. 







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