Billy Jones has told Sunderland's official website that training under Dick Advocaat has been very intense so far.
Advocaat took charge of Sunderland at the start of last month and has looked to make a number of changes in a short space of time.
As a result, the Black Cats squad have had to work hard on the training pitch, and Jones has enjoyed the demanding schedule.
“Training has been very intense under the new head coach so it has been a good test for me coming back," he said.
“The international break has also given the new coaching staff a good opportunity to bed in and training has been a little bit different, and I think as you saw we had a different shape against West Ham United so if we use that once more hopefully we can build on our performance and pick up three points.”
Jones has been out through injury since February, but he is close to making his comeback and could be involved against Newcastle United this weekend.
He will be looking to impress, as the former West Bromwich Albion man has not had the desired impact at the Stadium of Light since signing last summer.
Jones was expected to be one of Sunderland's key players this season, but he has made just 10 appearances in a campaign blighted by injury.
A good performance against Newcastle would go some way to ending the frustrations for the right-back, and his display could be crucial for his side.
Sunderland have struggled in attacking situations this season, so keeping a clean sheet is likely to be crucial to picking up three points against the Magpies.
Sunderland are currently just one point above the drop zone, but a win against their arch-rivals would make their position in the Premier League table much more secure and the mood around the Stadium of Light would be lifted considerably.