Changing up your lifting tempos can be a great and simple
way to add more variety to your lifting program. You can achieve this by
adjusting the time of your eccentric, concentric, and isometric muscle
contractions during an exercise.
First, a quick recap of the three types of muscle
contractions listed above:
Concentric: Muscle shortening. For example, the initial
motion of a bicep curl.
Isometric: A static muscle contraction. For example, if you
were to hold your elbow at 90 degrees of flexion during a bicep curl.
Eccentric: A muscle lengthening contraction. For example,
the lowering of the weight during a bicep curl.
I apologize for using the bicep curl as an example, because
it is the most standard and boring one, but it is also the easiest to do while sitting
down and reading this. Now back to the point of this article… tempos.
The tempo of a lift is the duration of each contraction
during an exercise. For a squat, the first movement comprises the eccentric
phase. This could range from 1-6 seconds depending on the results you desire.
The bottom position of a squat, before you start standing up, is the isometric
portion. An isometric contraction can be performed at the bottom of the squat,
halfway down when descending, or halfway up when ascending. You can add in an
isometric wherever you want during the movement.
Lastly, we now have the concentric phase, seen when you
stand back up from the squat. These contractions can be adjusted a variety of ways
for different exercises. This way, you can add more variety to your exercise
program without the need for more equipment. Change up some of your tempos and
spice it up. A little more variety will probably do you some good and get you
some more of them gains!
Ryan Goodell, CSCS
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