Isolation · Quadriceps
Leg Extensions is the one isolation (single-joint) exercise for the quadriceps in the GymStreak library, all beginner level, using leg extension machine.
Written by the GymStreak coaching teamUpdated
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Isolation quadriceps exercises move a single joint, so the quadriceps do most of the work. Use them after your compound lifts, with moderate to high reps and controlled form, to add focused volume. The loads are lighter, so they're a good place to practise a slow lowering phase and a full range of motion, and they add little fatigue to the rest of your workout.
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Squat patterns train the quads together with the glutes and adductors. Front and goblet squats, which hold the load in front, keep the torso more upright and tend to put more emphasis on the quads. Lunges and split squats train one leg at a time. Machines such as the leg press and hack squat let you push hard without balancing a bar, and leg extensions isolate the quads. Let the knees travel forward naturally over the toes, in line with the feet, and use a depth you can control.
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Build around one squat or leg-press pattern, add a single-leg move such as lunges, and finish with leg extensions if you have a machine. Bodyweight and goblet squats are the best starting points for beginners.
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Free GymStreak calculators that go with quadriceps training.
Guides from the GymStreak blog on this topic.
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