Seated leg curl with leg extension machine || irontech fitness 01857427848 #irontech_fitness #bangladesh #gym #multifunctional #reels | Johny Khan

Seated Leg Curl vs Lying Leg Curl for Hamstring Hypertrophy: Biomechanics & Research-Based Answer Biomechanics & Muscle Length Principle: 👉🏼The hamstrings cross both the hip and knee joints, except the short head of the biceps femoris, which only crosses the knee. 👉🏼Lying Leg Curl: Performed in hip extension (neutral), so hamstrings are not fully lengthened. 👉🏼Seated Leg Curl: Performed in hip flexion (~90°), which pre-stretches the hamstrings at the hip joint, especially the semimembranos