Hi all,
I recently purchased this
NSD Spinner Hand/Grip Strengthener on a total impulse buy during an Amazon lightning deal (hey the reviews make it sound amazing!)
According to some reviewers, this product helped them with RSI or carpal tunnel symptoms! I could see this being the case as you are definitely strengthening your muscles with this tool.
Thoughts:
It is a super cool gadget as it's powered completely by a gyroscopic spinner. It is so odd to use, but you start it up by winding up the ball in the middle with your thumbs. You let go and it starts spinning. You hold it in your hand then move your hand in a motion like you are stirring a pot of soup. If your hand motions sync up with the gyroscopic mechanism, the resistance increases!
You can start feeling the burn all through your arm (including your wrist and forearm)... speed up your hand all while keeping in sync and it starts to get tough to keep a hold on the thing due to the force!!
I've only had it for 2 days but I could definitely see this helping those of us who experience RSI/carpal tunnel symptoms-- at this price I really think it's worth checking out. If you are consistent in using it I'm sure you could get some muscle definition going. Also it's just an interesting gadget that's really fun to use and challenge yourself to getting it to a super high rpm. Two thumbs up!