Review of the X3 Bar by Dr John Jaquish: Is It Good for Building Muscle?

Thing is, there’s a growing body of evidence that when we challenge our muscles at longer muscle lengths, we stimulate more muscle growth. And the effects are quite dramatic, too. If we look at a systematic review of 26 studies, we see that challenging our muscles at longer muscle lengths stimulates almost three times as much muscle growth: (View Highlight)

So, what we see with this research is that the more stress we put on our muscles when they’re stretched, the more muscle we build. This seems to apply to traditional weight training and exercise machine lifts, too. For example, if we look at a study on hamstring curls, we see that training the hamstrings at longer muscle lengths produced a more than twice as much muscle growth as training them at shorter muscle lengths. (View Highlight)