I would like to add:

My daughter was kicked hard, directly in her helmeted head when she fell off her horse going over a jump, with no head injury sustained.

The same child, not wearing a helmet, while riding double with her cousin, just taking the horse for a drink while camping, so thinking a helmet wasn't necessary, sustained a concussion by falling off the walking horse and hitting her head on the ground.

The same child, wearing a helmet (obviously a bad luck kid!) _flew_ off a horse at a gallop, hitting a metal fence hard enough to knock her boots off! No head injury. When told not to tell Grandma how she scraped her ankle, she promptly said to Grandma when we got to her house "I'm not supposed to tell you how this happened!"

Nanci