New Zealand Warriors captain Roger Tuivasa-Sheck is relishing the NRL's restart after a "tough" return to training on Tuesday.

The Auckland-based Warriors arrived in the regional New South Wales town of Tamworth on Sunday ahead of the NRL's planned return on May 28 following the coronavirus pandemic.

NRL teams are scheduled to resume training activities on Wednesday, but the Warriors trained in small groups on Tuesday.

Providing an insight into the Warriors' quarantine training, Tuivasa-Sheck said: "It's a different type of training to training on your own back home, inside your house or your little backyard.

"Scully Park is a beautiful park and when you try to measure 60 metres to run back home compared to the real 60 metres, there's a lot of difference!

"It was a tough day today, but I'm glad to be back into it."

While NRL rivals are due back for physical training on Wednesday, the @NZWarriors' quarantine camp in Tamworth has already swung into gear at Scully Park.https://t.co/dkJ5IXdGzx

— NRL (@NRL) May 5, 2020

Tuivasa-Sheck, whose team lost their opening two games before the competition was suspended on March 23, added: "Day one training ran pretty smoothly.

"I'm pretty sure the coaches and trainers all sat in a meeting yesterday trying to figure it all out, because we got new biosecurity rules come through and new protocols.

"We trained in groups today. One group was up early, had breakfast, they did their mobility, got ready and then they were on the field.

"Then the next group would have breakfast and then so on. So it's almost like a chain, we're in the breakfast hall, then it's into the gym and that group stays together and we move along like that, in a little circuit."