Netball New Zealand operations manager Kate Agnew said netball was "not a non-contact sport" and she did "not necessarily think that netball across the board is getting more physical".
"In the ANZ Championship, the elite level, the players are pushing themselves more, they're better prepared, they're stronger, fitter, faster, they can jump higher, they are in the air longer."
The ACC statistics did not necessarily show that the game had become more aggressive, Ms Agnew said.
She pointed to the reduction in the cost of claims, to $15.12 million last year from $17.37 million in 2008.
Ms Agnew said the reducing costs indicated the netball injury prevention programme run with ACC was paying dividends.
Contact
Netball injuries 2008-2012
ACC claims accepted: Up 22 per cent
(from 21,504 to 26,321)
Numbers playing: Up 4 per cent
(from 138,510 to 144,040)