09/04/2026
Your quads are four muscles. Only one of them crosses your hip. 🧠
Three of them start on your femur, so your hip position is irrelevant to them. The re**us femoris starts on your pelvis, which means every time you change your hip angle you change how long it is. 🦵
22 men, 10 weeks. One leg did leg extensions leaned back, the other did them sitting upright. Same knee range of motion both sides.
The leaned back leg grew significantly more re**us femoris. The vastus lateralis? No difference at all. 🔥
Your backrest is a training variable.
Comment GAINS for the full leg block.
