TABLE 1.

Physical Activity Scale Ratings Completed by Participants at Each Visit to the Clinic^a

Physical Activity Scale	Description
1 = rest	No athletic activity except walking.
2 = minimal athletic activity	Light aerobic activity such as vigorous walking or light stationary bicycle riding, such that you barely break a sweat.
3 = moderate athletic activity	Moderate aerobic activity such as jogging or brisk cycling, such that you are sweating but are able to carry on a conversation.
4 = sport-specific activity	Sport-specific or full aerobic activity such as running, ice skating, swimming, throwing, dribbling a ball, or cycling.
5 = noncontact activity only	Noncontact training drills such as passing, shooting, and/or resistance training such as push-ups, sit-ups, or weightlifting.
6 = full practice with contact	Full-contact practice, including contact.
7 = game play	You have been playing fully with the team.

^aRatings on this scale were adapted from the stages described in the graduated return-to-play protocol provided by the Consensus Statement on Concussion in Sport.²⁷