NHL players who are playing in the 2017 Stanley Cup Playoffs have had at least one concussion in each of the past four years.

In the first five seasons, a player had five concussion-related concussions, according to a study published by the American Journal of Sports Medicine.

The average was five.

This year, the average is eight.

The research also shows that the number of concussions is on the rise.

A player can get three concussions in the first week of the season, the most recent time for which data is available.

The highest number of concussion- related concussions came in 2016-17, when there were six.

In that year, only five players had five or more concussions.

The trend will continue this season, with only five concussions per game in the playoffs.

The NHL Players Association (NHLPA) has set a goal of reducing concussions among its members by 50 percent by 2020.

The organization will present its new concussion guidelines in November.

The new guidelines will include a list of guidelines, including a number of steps players should take to reduce concussions while playing, as well as a set of rules and measures to address concussions during the playoffs and in the regular season.

The guidelines will also require players to undergo annual physical examinations, which can include a physical examination at the end of the regular-season or playoff season.

There are some changes in the league’s concussion policy that players will have to accept.

Players can’t wear helmets during games during the regular seasons, but the NHLPA is pushing players to wear full-face masks at all times during games.

The NHLPA also is working on a concussion protocol that would allow players to submit data regarding concussions at the start of the playoffs to a medical doctor.

The protocol would also be designed to monitor and address concussive injuries during the preseason, before a player’s team is selected to the NHL playoffs.

There are a few changes in how the NHL is managing concussions and how the league responds to concussions to avoid a repeat of last year’s incident.

Last year, three players received a total of 20 concussions for a total loss of 23 games for the New York Islanders, and six players suffered the loss of 12 games for a loss of 19 games for Ottawa.

In 2016-2017, there were 13 NHL players with concussions who suffered a total injury total of 19, according the research by the researchers at the University of New South Wales.

The data shows that two of those players had multiple concussions that required hospitalization.

In 2016- 2017, the NHL suspended seven players for their role in the incident.

Last season, there was no suspension.

In 2017-18, the N.H.L. has suspended four players for the incident that resulted in the deaths of goalie Corey Tropp and defenseman Mark Stuart.

The suspensions were for one game each.

The suspension was lifted after the N,H.C. agreed to a new collective bargaining agreement that requires players to report concussions on a daily basis to a doctor.