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Free substitution or rolling substitution is a rule in some sports that allows players to enter and leave the game for other players many times during the course of a game, generally during a time-out or other break in live play; and for coaches to bring in and take out players an unlimited number of times.
Each team is given only three windows (opportunities) during a match to make their five substitutions. For competitions allowing an additional substitution in extra time, each team will have one additional substitution opportunity (any unused substitution opportunities from regular time will carry over to extra time).
Sports medicine is a branch of medicine that deals with physical fitness and the treatment and prevention of injuries related to sports and exercise. Although most sports teams have employed team physicians for many years, it is only since the late 20th century that sports medicine emerged as a distinct field of health care.
Substitution (law), the replacement of a judge; Substitution (sport), where a sports team is able to change one player for another during a match; Substitution therapy or opiate replacement therapy; Import substitution industrialization, a trade and economic policy; Penal substitution, a theory of the atonement within Christian theology
Free substitution — apparently intended to help lesser players by allowing longer rest breaks — was implemented in a rule change made April 7, 1943, "for the duration" of the war effort. [7] This was paired with a one-year rule change made in August reducing the size of wartime NFL rosters from 33 players to 28, in an effort to reduce the ...
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A substitute can act for the injured or ill player in the field, although they may not bowl, bat or act as captain, unless otherwise agreed by the captains.A player may bat, bowl and field even if they have had a substitute for part of the game, though they need to wait for a period equal to their time off the field until they bat or bowl again.
'Exercise is Medicine' is a trademarked non-profit venture of the American College of Sports Medicine. By comparison, 'Exercise Medicine' is a specific subspecialty of 'Sport and Exercise Medicine'. The concept of 'Exercise is Medicine' is that all medical specialists should be prescribing exercise regularly as an adjunct to a standard ...