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Leg Extension (Standard)

Primary target: Vastus Intermedius (股中间肌)

Exercise Details

Equipment
Leg extension machine
Sets & Reps
3-4 sets × 12-15 reps · rest 60-90 s
How to do it
Knee aligned with the pivot; the whole quadriceps (including the deep vastus intermedius) kicks to full extension with a top squeeze; 3-second negative; glutes stay on the seat.
Common mistakes
Swinging the legs, partial reps, hips lifting

Muscles Worked

Vastus Intermedius

Other Exercises for the Same Muscle

Barbell Back Squat · Leg Press · Hack Squat · Front Squat

See the Vastus Intermedius in the 3D anatomy tool →