Q: I’m a big fan of the SkiErg. When I workout I do a full crunch, bend at the waist and keep my legs straight, is this wrong? I notice from the videos that the demonstrators bend their knees and only half-crunch, so more arm involvement.
A: When using the SkiErg, following the description you outlined from the demonstration videos is the correct way to go. You want to have a slight bent in the knees – never locked legs. The legs and ankles should be soft and supple and the feet placed at hip-distance width. You want to initiate the crunch from the upper abdominals, so eliminate the bend at the waist.
It is important to use the core and arms in unison. Most of the power is going to come from the initial “pole” down when your hands are high, then follow through using the core (including the back muscles), lats and triceps. This is a more efficient way to double pole and will save you from back injury that can occur when you bend at the waist/hips. As you transition to this new technique, you may feel more involvlement from the arm, but over time you will become stronger and more efficient in the upper body.