Grant Hackett will aim to continue his resurgence, and Jodie Henry will try to begin hers when they kick off the Olympic year at the Victorian swimming championships.

Hackett has entered the men's 100m, 200m, 400m and 800m freestyle at the five-day meet, and is scheduled to make his first appearance on Friday in the 200m heats at the Melbourne Sports and Aquatic Centre.

The 27-year-old, who had a disappointing world championships last year, is fresh from a successful foray into open water swimming last month, winning the 10km Olympic Games qualifier in Penrith.

But Henry, who is aiming to defend her Olympic 100m freestyle title in Beijing later this year, is coming off a disastrous Queensland championships last month.

She fell off the blocks in the 200m heats and was disqualified, then pulled out of her 100m freestyle final with a mystery illness.

It came after Queenslander Henry splitting with long-term coach Shannon Rollason and quitting their Canberra base to return to Brisbane.

Henry has entered the 100m and 50m freestyle in Melbourne, where she will take on American star Natalie Coughlin.

Coughlin and fellow US world champion Kate Ziegler add high power to a meet which has also attracted Australian stars Leisel Jones, Matt Welsh and Kenrick Monk.

All the Australians are using the championships as preparation for the upcoming Olympic selection trials in Sydney from March 22 to 29.

Ziegler, world champion in the women's 800m and 1,500m, has signed up for a full program of 50m, 100m, 200m, 400m and her pet 800m freestyle events in Melbourne.

The Victorian championships continue until Tuesday.

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