Olympic Weightlifting: A Complete Guide for Athletes & Coaches
Keeping the 315-pound bar directly over the mid-foot through the complete range of motion (ROM) constitutes the most efficient way the work should be done during the lift.
Mark Rippetoe • Starting Strength
The lift should be initiated by the hips and thighs and finished with the assistance of the low back muscles. Stabilizing the weight and controlling one’s body position also calls upon the traps, scapulae retractors, lats, forearms, and hamstrings.”
Pavel Tsatsouline • Power to the People!: Russian Strength Training Secrets for Every American
Weightlifting: Assuming you've met some minimum threshold and are doing reasonably effective exercises (like these) with reasonably effective form, the details don't really matter that much. Once you've passed this basic threshold, what makes 95% of the difference is this: Are you showing up to the gym and putting in your reps?
James Clear • How Smart Do You Have to Be to Succeed?
Which is why I recommend quickly pushing your hips back, dropping down with the barbell after each repetition, and resetting for each rep as if it is the first one in Power to the People!