after the national football league (nfl) bann...
after the national football league (nfl) banned the distribution of amphetamines in 1971. multiple choice random urine tests were used to make sure the players were not taking them. there were half as many injuries as before the ban. individual players could still get a prescription and use amphetamines if they wanted. the ban was ignored, and most teams still bought amphetamines in large quantities for their players.
Answer
# Brief Explanations:
When the NFL banned the distribution of amphetamines in 1971, random urine - testing was a common method to enforce such bans and check for prohibited substances. There is no evidence to suggest that injuries were halved after the ban. Also, a league - wide ban means that even with a prescription, using amphetamines would violate league rules. And it's unlikely that most teams would openly ignore a league - wide ban.
# Answer:
random urine tests were used to make sure the players were not taking them.