Hand Very Sore (not muscle)
Ive been using the powerball for about 30 minutes (I just got it today.) My hand just below my middle finger is extreemly sore. It is not being worked out, so its not the muscle thats sore, it feels like I held out my hand and had someone punch it about 50 times. its also right where my hand contacts the digital couter thing. Maybe I'm holding it wrong? Also, I cant seem to get it past 8k RPM, im making small fast circles but it doesn't go any faster...but thats besides the point I guess. Is there any real picture of how to hold it other than the one in the instructions that donest really show anything?
I've had similar problems in the past...I've ended up with slight bone-bruising or perhaps minor tendon damage. I've always put it down to "not holding the Powerball in a comfortable fashion and.or over-doing it".
There's no "proper" way to hold it, but if it causes pain then you should try adjusting your grip.
I kind of hold mine a bit like I would hold a ball I'm about to throw to someone. With the counter towards my palm, but not literally pressed flat into my palm. The edge of the counter does tend to rub a bit and it's caused hard bits of skin on my palm.
I would suggest resting for a bit, or only using on very slow (3000 to 5000 rpm) speeds.
As for your top speed, don't worry...it takes a while to make speed improvements. I started on around 9000 and took about a week to get to 10000, a months to get to 11000, several months to get to 12000, and about another year to get to 13579.
When i first started powerballing i had this as well. Normally, the palm of your hand isn't use to such exercise, and the fact you have a ball spinning at over 9000RPM in your hand, will cause bruising along the muscle and bone of the palm of the hand in some cases, not all, although the bruise is not visible as it is not very big at all, It's exactly like when someone gives you a dead arm, it bruises the muscle, and sometimes the bone, and is very painful when something puts pressure onto it , hence your pain when using the powerball.
What i suggest is carry on using it, your muscles will build up and get used to the high spinning powerball, and the pain will go away.
I have had this before, it's nothing to worry about.
Hope that helped.