Tuesday, October 27, 2009

WOD 102709

For time of:
10 KB Clean & Jerk @ 24kg/16kg, L&R
50 Double Unders
8 KB Clean & Jerk @ 24kg/16kg, L&R
40 Double Unders
6 KB Clean & Jerk @ 24kg/16kg, L&R
30 Double Unders
4 KB Clean & Jerk @ 24kg/16kg, L&R
20 Double Unders
2 KB Clean & Jerk @ 24kg/16kg, L&R
10 Double Unders

The Kettlebell Jerk
The jerk is one of the three main exercises utilized in kettlebell competition(the other two being the snatch and the Long Cycle). Primary muscles involved are the quadriceps, calves, shoulders and core.

The jerk develops strength, explosiveness, endurance, work capacity and core strength. In terms of functionality, the jerk is a fantastic exercise for developing explosiveness in a vertical plane using a short range of motion.

In a kettlebell competition, male athletes will jerk two 32kg bells continuously for 10 minutes. With the goal being to complete as many reps as possible, the competition is physically and mentally challenging as placing the bells on the floor is not allowed during the 10 minutes. The jerk, being a competition lift where efficiency is key, utilizing anatomical breathing is a must. Thus, inhale as the bells are thrust up, exhale/inhale at the top and then exhale/de-pressurize as you lower the bells back to the rack position. Since pacing is important variable in this exercise, you may take several breaths in the rack position and even overhead to facilitate recovery between reps.

Key points:
- After cleaning the bell to a racked position, the bell is accelerated overhead via an explosion of the legs.
- The bell travels upward close to the body's centerline - a different groove from a military press.
- After using initial leg drive to bump the bell upward, add in a second knee dip to get under the weight and lock the elbows.
- The upward movement is finalized with the both the arms and legs locked.
- The arm/shoulder position should be rotated medially(towards the body's centerline) at approximately 45 degrees.

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