벤치프레스 할 때 다리 들고 하는 몸짱들은 뭘까

#벤치프레스
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[참고자료]
-Evaluation and comparison of electromyographic activity in bench press with feet on the ground and active hip flexion
-Electromyographic Activity of the Trunk Stabilizers During Stable and Unstable Bench Press
-Not All Instability Training Devices Enhance Muscle Activation in Highly Resistance-Trained Individuals
-Muscle Force Output and Electromyographic Activity in Squats With Various Unstable Surfaces
-Electromyographic Activity and 6RM Strength in Bench Press on Stable and Unstable Surfaces