普段のフリーウェイトでは効かせられない体幹の鍛錬に効いているようです。you tubeには、強いゴムを使用して、張力に負けて倒れる痩せた人の動画が投稿されていてますが、強度的には、体重がたぶん70キロ以上ある人なら、もってかれる事はないと思います。普通に真面目なトレーニーの方々には強すぎると言った心配は不要です。スターターセットには、張力の弱いゴムが標準装備ですが、これはさすがに非力な女性や高齢者向けの弱さでした。

The rip trainer, like the original TRX system, represents a great functional workout. The beauty is the simplicity, which for some could be a criticism if you are looking to lug around heavy weights. Having had the original TRX for about 6 years, I was actually surprised by the 20 minute video which you can download upon purchase -- it's very useful, and goes through a number of excellent exercises. Additionally, the trx website and youtube are excellent resources for additional ways to punish yourself.For those you mentioned the "serious flaw" about being unable to thread the cable through the eyelet -- consider this a bit of a darwinian challenge. If you can't figure that out, perhaps lugging around the big heavy weights represents the highest order accomplishment. Hint, thread thru webbing, not the eyelet. To make it even easier, buy a couple of caribiner to very quickly switch between the various strength cords.Again, I highly recommend a quick peek at some of the exercise videos out there - while it looks deceptively simple, the workouts can be incredibly difficult. And, the true advantage is the portability which is second to none -- nothing like packing two small bags (trx and rip trainer) for the trip to the cottage, and the gym comes with me.Enjoy!

Original de TRX el rip trainer para trabajar bien el cuerpo , lo recomiendo para los que nos gusta trabajar junto con trx

Excelente producto

Product is great