In a release, the Titan announced that Jordan Boyd was skating during an individual training session when he suffered discomfort and collapsed on the ice.
The hockey team's medical unit tried to revive him several times, according to a statement from the team.
Boyd, from Bedford, N.S., was taken to hospital, where he was pronounced dead.
The team said Boyd had a complete medical evaluation prior to the training camp. He did not seem to have any medical problems that would have prevented him from participating.
An autopsy will be performed to determine the exact cause of death.
Boyd was the third Nova Scotian selected in the Q-league draft in June. Last year, he played for Rothesay Netherwood prep school and was the 66th overall pick in this year's draft.
Boyd had 17 goals and 22 assists in 41 games for Rothesay this past season.