How to Do the Perfect Machine Leg Extension (Complete Guide)

Build powerful quadriceps strength and definition with this isolated leg exercise that targets the front thigh muscles with controlled resistance.

Perfect Machine Leg Extension Technique

The machine leg extension provides isolated quadriceps strengthening with controlled resistance. ChAIron's AI coaching ensures proper machine setup and execution for maximum muscle activation and safety.

Step-by-Step Form Guide

Machine Setup:Adjust seat so knees align with machine's pivot point
Position:Sit with back flat against pad, ankles behind lower pad
Grip:Hold side handles for stability throughout movement
Extension:Lift weight by straightening legs in smooth, controlled motion
Peak Contraction:Pause briefly at top with legs fully extended
Lowering:Return to starting position with controlled resistance

Common Mistakes to Avoid

Using momentum or swinging legs during movement
Allowing knees to drift inward during extension
Lifting too much weight compromising form
Arching back or sliding forward in seat
Dropping weight too quickly on the descent

AI Coaching Benefits

Proper machine setup and body positioning
Range of motion optimization and control
Knee alignment and tracking throughout movement
Tempo and muscle activation patterns
Safety cues and progression recommendations

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