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Iso hook - the extra tension strap for new and additional exercises with the Isokinator

A spring hook with a long tension strap (mountain-climbing quality) for 5 professional exercises
The Iso hook strap lengthens the standard straps of the Isokinator, creating many new possibilities for workouts. The following five special exercises are officially tested and authorized by Koelbel Training Research:

- defining chest muscles (M2E)
- combat training of upper against lower body (M6C)
- upper back muscles (M5E)
- workout of upper back (M5F)
- shoulder and cap muscles (M4D)

These exercises are included in the current, enclosed training manual. The manual is included in every new Isokinator and Iso hook. The individual exercises can also be viewed on the Isokinator film "in Action" on YouTube. Headword: "Isokinator Training - Health by muscles - the film"

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