'https://fitdir.com/shop-by-brand/tuffstuff/ Each of the Bio-Arc line’s machines were tested, following initial design positioning, by an independent exercise consulting company. Pilot research studies combining joint positioning – using goniometry testing, along with muscle recruitment and activity measurements – through electromyographic (EMG) testing were performed to determine the optimal dimensions of each unit for final production. Every detail and design modifications were executed to exact specifications and re-tested. The end results, a patented Bio-Arc Technology that allows full body linear arc trajectory motion during execution of the exercise! Design position of head pad and foot support allows you to be in a neutral position allowing users to optimize muscle activation during Bio-Arc motion. The user’s entire body moves along a linear arc trajectory with the machine to optimize muscle recruitment. #FitnessDirect'
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