At least 350 injuries relating to trampoline accidents occurred in Hawke's Bay last year.
Figures from ACC show 350 injury claims were accepted in Hastings, Napier, Central Hawke's Bay and Wairoa for trampoline-related accidents.
District figures show most claims were from Hastings and Napier. Central Hawke's Bay and Wairoa registered only 37 injury claims between their districts.
Claims in the Hastings district jumped significantly in the past two years, up 22 per cent from 142 in 2011 to 173 in 2012.
Nationally, nearly 8400 injury claims relating to trampolines were accepted by ACC last year - about 160 a week - costing more than $2 million.
A regional breakdown of injury costs was unavailable.
Most of the victims (84 per cent) were children aged 14 and under. However, Kiwis in their twilight years also joined the fun - 16 injuries were logged for pensioners aged 70 and over.
The figures also indicate trampoline injuries are on the rise. Last year's national claim count was the highest in five years.
Jonathan Collins of Springfree Trampoline says children should be supervised at all times on trampolines.
"Broken bones are the most common injury followed by bruising, sprains, cuts, dislocation and dental injury.
"The one at a time rule is important - a large number of injuries occur when multiple jumpers are on the trampoline and the smaller person is almost always the one injured."
Springfree Trampolines are said to be the world's safest - of the five trampolines tested in Consumer NZ's latest trampoline report, the Springfree was the only one to pass safety tests.
Mr Collins said falls and hitting trampoline frames and springs were the leading cause of injuries.
"While you'd think a net and pads would stop those injuries, studies show they're not doing so."
When purchasing a trampoline, people should look at the quality of the net and ensure pads provide adequate protection.