Leg Press

The Leg Press is a fundamental machine-based lower body pressing exercise that develops quadriceps, glute, and hamstring strength while providing a safe, stable training environment. This movement is ideal for all fitness levels and those seeking lower body strength development without the balance demands of barbell squats. The leg press machine provides a guided path and variable loading options suitable for progressive strength development.

NASM’s evidence-based approach recognizes machine-based leg training as effective for isolating leg muscles and building bilateral leg strength. The leg press improves leg strength, supports muscle development, and translates to improved functional leg capability and athletic performance.

How to Perform Leg Press

Step 1: Setup

Sit on the leg press machine with your back and head firmly against the backrest. Position your feet on the platform hip-width apart with your knees bent at approximately 90 degrees.

Step 2: Brace/Position

Place your hands on the handles for stability and release the safety bars. Engage your core and position yourself for controlled pressing movement.

Step 3: Execute/Drive

Press the platform forward by extending your legs, driving through your feet without locking out your knees. Focus on balanced quadriceps and glute contraction throughout the pressing phase.

Step 4: Return/Descent

Lower the platform back toward your body with control, returning to approximately 90 degrees of knee flexion. Maintain tension throughout the movement and avoid jerky or uncontrolled descent.

Muscles Worked

Primary Muscles:

• Quadriceps -- primary mover for knee extension and leg pressing power
• Glutes -- assist in hip extension and provide pressing power

Secondary Muscles:

• Hamstrings
• Hip Adductors
• Core Stabilizers

Common Mistakes

• Using excessive weight that compromises form or allows knees to collapse inward
• Allowing knees to cave inward (valgus), which indicates poor motor control
• Locking out knees at full extension, which removes tension and stresses the joint
• Descending too far beyond 90 degrees of knee flexion, which reduces control
• Losing postural control or allowing hips to shift during the movement

Leg Press Variations

• Single-Leg Press
• Leg Press Calf Raise
• Goblet Squat

As part of NASM's evidence-based approach to movement and strength training, the leg press reinforces proper movement mechanics essential to long-term performance and injury prevention. NASM-certified personal trainers use the Optimum Performance Training (OPT) model to integrate exercises like the leg press into individualized programs based on each client's assessment results.

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