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duo extension



The Duo-Extension: A New “Arthur Jones” Machine in 2019

Half a century ago Nautilus inventor, Arthur Jones’ mind was focused on attempting to solve yet another challenge to improve exercise: how to make the squat safer and more effective. When the solution to doing just this became apparent to him, he referred to it in his IronMan magazine column of November 1970 as “The Final Breakthrough”.   What’s the problem with barbell squats that inspired Jones to look to better such a classic exercise? Squats are a relatively high-skill exercise, some people’s knees don’t get on with them and those with low back issues may well find squats uncomfortable …

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