PORT Adelaide captain Tom Jonas is at least a couple of weeks away from returning to full training with an ankle injury, while emerging midfielder Dan Houston copped a knock to his knee in match simulation.

Jonas was restricted to running laps of the ground at the Power's training session at Alberton Oval on Wednesday.

The 29-year-old – who has taken over as the Power's sole skipper this year after sharing the captaincy with Ollie Wines in 2019 – suffered the injury late last year and was in the rehab group at the club's training camp on the Sunshine Coast in December.

"Full training, not too sure, but he'll certainly train next week and do some load," Power assistant coach Brett Montgomery said.

"It's a syndesmosis ankle (injury), it takes time for those two bones to stiffen up and get nice and tight.

"We'd expect he'd be back into full training the week after next, but I certainly don't want to put a day on it with him."

The Power were put through a taxing three-hour session, which included plenty of physical match simulation drills.

Houston – third in the Power's best and fairest after switching from half-back to the midfield last year – copped a knock to his knee, but was able to get to the next stoppage.

"Generally, when they're really bad they're out of there as quick as they can," Montgomery said.

"We haven't had time to get over that one, but it is some type of knee knock.

"In seeing it iced before, he was pretty happy that it wasn't anything significant."

Of the other players in the rehab group, ex-Cat Wylie Buzza ran laps as he continues to be managed from a groin injury, Willem Drew was on light duties after having heel surgery in November and defenders Ryan Burton and Jack Watts swam laps of the pool and trained on the bike indoors.

Burton's workloads are being carefully managed after having two separate hamstring injuries last year and Watts is recovering from a badly broken leg in round two.

"(Watts) is going good, he's going really well," Montgomery said.

"Like a couple of our other guys, he needs space between his big sessions."

Veterans Robbie Gray, Travis Boak and Justin Westhoff didn't take part in the session, but ran strong times in the time trial on Monday.

Vice-captains Ollie Wines and Hamish Hartlett, key forward Charlie Dixon, Tom Clurey and Todd Marshall warmed up with the rehab group, but took part in the majority of the session, including full-ground match simulation.

Dixon looked threatening up forward, hitting up a teammate with a pinpoint kick before using his strength to outmuscle his opponent to take a strong mark.

"We need that competitive beast in the forward line," Montgomery said.

"We don't put expectations around leading goalkicker or being our only target, he's one of an outfit down there, but we do need a competitive beast.

"Every time I've seen a willing and able Charlie Dixon, he's been able to deliver that in spades."

Young gun Connor Rozee impressed playing through the midfield in match simulation, as did fellow second-year talents Zak Butters and Xavier Duursma.

First-round draftees Mitch Georgiades and Miles Bergman were lively in attack and half-forward Kane Farrell's tackling pressure was a standout as he attempts to fill the forward spot vacated by Sam Gray joining Sydney.

Experienced midfielder Tom Rockliff was back into full training after having shoulder surgery in September.

Rookie-listed defender Martin Frederick had his right knee looked at during a training drill, but was able to jog on the sidelines and run side to side.