Recent studies have found that the leg extension activates the rectus femoris muscle more as compared to squats.
This includes the vastus medialis, the vastus lateralis, the vastus intermedius and the rectus femoris. The primary muscles worked during the leg extension are the quadriceps, the muscles on the front of the thigh. Some people would benefit greatly from this exercise, especially bodybuilders, while others, due to orthopedic issues, would be prudent to take a pass. The same thing is true for the leg extension. But for some people, due to pre-existing injuries and or unfavorable biomechanics, barbell squats are actually not a good choice at all. The squat is widely considered the king of lower body exercises, much favored over the leg extension. "Bad" or "dangerous" exercises make good headlines and clickbait, but the best coaches today will tell you that no exercise is completely good or completely bad, there is only poor application and poor performance of any movement. No exercise should either be put on a pedestal or condemned without considering the context, including each individual's goals, needs and orthopedic condition. The truth is, almost every exercise has pros and cons, risks and benefits and should be evaluated and prescribed on that basis. This exercise has ended up on lists of "machines that hurt you," it has been called "non-functional," and has even been criticized as utterly ineffective.Īll of these statements are false. Leg extensions have gotten a bad rap in recent years. Skip to bottom of page for leg extension video demos
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