Sled Closer Hack Squat

Cómo hacer el Sled Closer Hack Squat

1. 1Load the sled machine to your working weight, then stand on the platform with your feet hip-width apart or closer — heels roughly 6–10 inches apart and toes pointed forward or angled out no more than 15°.
2. 2Position your back flat against the padded backrest and place your shoulders squarely under the shoulder pads. Your spine should maintain neutral contact with the pad throughout the movement.
3. 3Grip the handles firmly on both sides of the sled to anchor your upper body and prevent your torso from pitching forward during the descent.
4. 4Release the safety handles and brace your core by taking a deep breath into your belly to create intra-abdominal pressure before you begin each rep.
5. 5Bend your knees and hips simultaneously to lower the sled in a controlled manner over 2–3 seconds, aiming to reach a depth where your thighs are at least parallel to the platform — or deeper if your mobility allows without your lower back rounding away from the pad.
6. 6At the bottom, keep your heels pressed firmly into the platform and your knees tracking in line with your toes, with your lower back maintaining contact with the backrest.
7. 7Drive through your heels and midfoot to press the sled back up, extending your hips and knees at the same rate until your legs are nearly straight. Exhale through the concentric phase.
8. 8Stop just short of full knee lockout at the top to keep tension on the quadriceps and gluteus maximus. Re-engage the safety handles after your final rep before stepping off the platform.

Consejos de técnica

• Keep your heels flat against the platform for the entire rep. If your heels rise during the descent, reduce the depth or the weight until ankle mobility improves.
• Press your lower back firmly into the backrest on the way down. Any gap between your lumbar spine and the pad signals you have reached the limit of your current mobility — do not force further depth.
• Let your knees travel forward over your toes as the squat deepens rather than blocking their path. The close stance naturally drives the knees forward more than a wide stance does.
• Brace your core fully before unracking the sled on each rep, not partway through the descent, to maintain spinal stability under load.
• Start lighter than you would on a standard hack squat — the close stance increases the mechanical demand on the quadriceps and requires more ankle and hip mobility.

Errores comunes

• Allowing the lower back to peel away from the backrest at the bottom of the rep, which transfers compressive load from the legs to the lumbar spine and increases injury risk.
• Setting the feet too wide for the intended variation — a wider stance shifts work toward the adductor magnus and away from the quadriceps, turning the movement into a standard hack squat rather than the close-stance version.
• Bouncing out of the bottom by using the sled's momentum rather than muscular control, which unloads the target muscles at the point of greatest potential activation.
• Locking the knees out forcefully at the top of each rep, which shifts stress onto the joint rather than keeping tension in the quadriceps and gluteus maximus.
• Rushing the descent without bracing between reps, which allows intra-abdominal pressure to drop and reduces spinal stability under load.

Preguntas frecuentes