Long Length vs 90 Deg Training. Which is Better? I’ve had a lot of questions recently about research regarding comparison of different muscles lengths & partial range of motion exercises with much of the research pointing to longer muscle lengths as being optimal for hypertrophy. So I’m giving the actual science based on research as I always do. Best shoes Vivobarefoot code JOEL20. Many of the studies actually define the lengthened or long length position as roughly 90 degree joint angles and th

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Dr. John Rusin - Training 90-degree angles all the time...