Breathing
Inhale before or during the controlled descent, then exhale as you stand. Maintain trunk support without holding your breath for the whole repetition.
Strength movement using Machine.

1 / 2Muscle guide
The stronger highlight marks the main muscle associated with this movement. The lighter highlight marks supporting muscles.
Movement instructions
Position a Smith machine bar a couple feet off of the ground. Ensure that it is resting on the safeties. After loading the bar to an appropriate weight, lie underneath the bar. Place the middle of your feet on the bar, tucking your knees to your chest. This will be your starting position.
Begin the movement by driving through your feet to move the bar upward, extending the hips and knees. Do not lock out your knees.
At the top of the motion, pause briefly before returning to the starting position.
Technique guidance
Inhale before or during the controlled descent, then exhale as you stand. Maintain trunk support without holding your breath for the whole repetition.
General guidance matched from movement type and equipment; it is not individualized coaching or medical advice.
Related movements