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Did the Implementation of a Bye Week Decrease Injury Rates in the National Hockey League?

Ibraheem Qureshi¹, Hans Drawbert², Christopher Flowers²

¹New York Institute of Technology College of Osteopathic Medicine, Glen Head, New York, USA.

Orthopaedic Journal of Sports Medicine

|February 13, 2026

Summary

The National Hockey League (NHL) bye week significantly reduced overall player injuries and specific injury types like muscle and knee issues. This suggests scheduled breaks can lower injury rates in professional sports.

Keywords:

NHL break hockey ice injury muscle

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Area of Science:

Sports Medicine
Epidemiology
Biomechanics

Background:

The National Hockey League (NHL) introduced a mid-season bye week in 2016-2017, a practice common in other professional sports.
This initiative aimed to provide players with a period of rest during the demanding season.

Purpose of the Study:

To compare injury rates, games missed due to injury, and multiple injury occurrences between NHL seasons before and after bye week implementation.
To analyze the impact of bye weeks on different types of player injuries.

Main Methods:

A retrospective descriptive epidemiology study analyzed NHL injury data from 2000 to 2023.
Injury data was collected from publicly available online sports databases.
Multivariate regression models were used to compare injury rates and evaluate the effect of bye weeks, adjusting for player position.

Main Results:

Overall injury rates per season decreased significantly from 763.7 to 646.7 after bye week implementation (P = .005).
Defensemen experienced a significant decrease in the proportion of injuries (P < .001).
Significantly decreased odds were observed for muscle injuries (OR, 0.26), knee injuries (OR, 0.41), and arm/shoulder injuries (OR, 0.39) post-bye week. Games missed due to injury increased slightly from 9.02 to 10.53 (P < .001).

Conclusions:

The introduction of a bye week in the NHL is associated with a reduction in overall player injuries.
Scheduled mid-season breaks appear to positively influence injury patterns, potentially decreasing the incidence of specific injury types.