Aaron I know you're new here, but let me explain something to you, this is a COMBAT forum. Why the hell would I need a "credentials" to say everyone shadowboxes with dumbbells and I know of no one getting injured? Why would I need "credentials" to say explain that I personally have used theese for many years with no injury? Would you go into an mma gym or boxing gym and tell people to stop shadow boxing with dumbbells unless they can show you "credentials"?
The facts are that shadowboxing with dumbbells is extremely common. If you disagree with this then say so, untill otherwise, stfu with your corny ass "credential" talk. Go into a boxing gym and ask for their credentials to use 2lb dumbbells. Hell, you mise well go into an aerobics class and tell the woman they need to stop shadowing with dumbbells. Dumbass. This is the last I post on this thread. My point remains this. It is quite common to shadow with dumbbells. I have never been injured doing so and know not of anyone who has. Many of the top fighters you root for use them as well. Perhaps you should stick with kung fu where things are different.
This is my last post in this thread. I'm tired of repeating myself. No that does not mean that I got called on something. Dont try and play intenet bully here and stop saying I passed myself off as an "authority". My points are very clear. If your so afraid your shoulders will be ruined using dumbbells then dont do them. If you want to continue this via pm rather than taking up the forum, pm me with YOUR "credentials", dumbass.
You are not tired of repeating yourself, you are tired of being proven wrong and being incapable of backing up your (self contradicting) statements.
You need "credentials" to to back up your OPINION that shadow boxing with dumbells can cause no injuries. This is imopssible due to the laws of physics (you know, the laws that govern everything in the universe?). Check out Sir Isaac Newton (among others) and some of his writings.
For every action there is an equal and opposite reaction. In order to accellerate / decellerate an object requires force. The amount of force is multiplied with the addition of mass (weights). The force would be pushing / pulling from a stationary object (your body) and this force would be transferred in varying amounts to various areas of your skeletal & muscular systems. there are several other variables involved. Mechanics- remeber the fulcrum & lever from your physics class? The longer your ulna / radius, phalanges, the supination / pronation of your hand, angle of attack, etc. Velocity- the speed of accelleration / decelleration would effect the transmission of loads to your body.
Then there's the physiological aspect. Overall condition of the subject in question. Flexibility. Strength. Strenght of tendons, ligatures.
Accellerating / decellerating an object is going to transfer stress to the individual. There is no way around this fact (unless you have managed to suspend the laws of physics that govern everything in existence). If this is enough to injure someone is open to debate due to the many variables involved. Is the chance for injury there? Without a doubt, as has been proven both physically & physiologically. Repetative stress injuries are very common and result from multiple small trauma that by themselves would do no damage but cumulatively do (think tennis elbow).
The basis of your arguement boils down to 2 items (per your posts)
1) You don't know of anyone who has been injured.
This arguement is really not worth addressing but I will quote you again (actually paraphrase since I will have to change one word, which I will put in parenthases)
"How many (Doctors) Boxers have you met and asked this specific question, and why?"
2) It's OK because that is the way it has always been done.
This arguement is also a fallacy. As I pointed out earlier training methods change as exersize physiologists learn correct ways to do things without injury (rememer the hurdlers stretch?).
Your continued attempts to drag me into your juvenile name calling only reiterate the fact that you lack any kind of corraborating data to back up your erroneous statements and are forced to degenerate into name calling in an attempt to deflect the topic.
As to your PM's I have no need to sneak around and try to resolve your issues. I am a full grown man and I have no problem facing up to anything and everything I post. If I am wrong I will readily admit it and publicly issue an apology, I have long since learned not to expect the same from internet "experts".
Also per you PM's I don't know sssmashing any better than I know you. I have no idea what style he trains in, nor do I particularly care. Your continued referrence to "McDojo's" is but another futile attempt to deflect the topic.
I will eagerly await either proof that you have managed to suspend the laws of Physics or your retraction of your claims..........................