As a trainer, you need to be able to see movement. In the push jerk, the telltale sign of improper movement in the dip is forward inclination of the shoulder, Russell Berger says during this CrossFit Level 1 Seminar breakout group.
The second movement to look for is the opening of the hips, he adds before having an athlete demonstrate the push jerk with a PVC pipe. The athlete is leaning forward in the bottom of the dip and isn’t getting full hip extension, Berger notes.
“I don’t worry about the shoulders if I’ve got the hips not open,” he says.
Next, Berger himself shows the athlete how the movement should look.
Once the athlete starts to open his hips, he doesn’t drive his arms up.
“Did he open his hips? Hell, yes. What happened when he did? He had no idea what to do next. Why? He got to a new spot where he had no wiring to tell him what to do next,” Berger explains.
Next he has the athlete simply jump without the PVC pipe.
“Keep your cues simple,” Berger says. “Focus on one thing at a time. Don’t try to impress your athlete with how much you know about a movement.”
Video by Matt Krautstrunk.
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Additional reading: Mastering the Jerk by Bill Starr, published June 15, 2009.