We have a trampoline too. My oldest is almost 10 and Joshua is 5. We had it before Joshua was born and so how do you tell one he can't jump and the other that he can; or the oldest knows it's there and wants to play with it but we can't set it up because they both can't? (both rhetorical questions) What we do with Josh is let him bounce by himself for a few minutes... he can't bounce hard, then let his brother go at it. I don't believe it's enough for him to do any damage, but enough to get the craving out of his system... kind of like that nicorette gum. :)
God, my poor little boy! It seems he doesn't get to do anything that other boys do and he is so desperate to do. And my girls have to miss out as well because some shit of a disease decided to infiltrate my poor little boy's body! This disease makes me so angry! Is there any exercise/activity they can do? Apart from swimming, which is not really an easy thing to do in a London winter?
my son jumped on a trampoline last year and was unable to walk later that day. I had to carry him from a friends house to the car. He was fine the next day, but I won't let him on one again. I then found the attached file.
He has not experienced problems in a bouncie, maybe because they are more firm? So, these, i still let him enjoy.
On page 8 of the attached PDF:
Fun but not recommended
Safety –fracture risk
Ok to sit and be bounced but not ok to stand and jump
Risk of myoglobinurea caused by working the muscles too much which can lead to kidney damage (coca cola/dark coloured wee)