There is no proven safe or effective dose for niacin in children. For type 1 diabetes mellitus prevention, 200-3,000 milligrams of niacinamide has been taken by mouth daily for up to one year; 20-40 milligrams per kilogram has been taken by mouth daily for up to five years, and lacked evidence of benefit.
Become A Referee. General Information. You become a referee by attending and successfully completing a referee training course. As of July, 2013 U.S. Soccer Federation (USSF) authorized two entry-level referee certifications: Recreational Referee Grade 9 and Referee Grade 8.However, Referee Grade 8 entry level is the most popular.nformation For New Referees. Once you successfully complete a referee course and register with the USSF, you will receive your badge and will need to get appropriate referee gear, including a soccer referee uniform, soccer referee flags, referee cards, whistle, watch and shoes.
Know the rules. As a referee, you will be called upon to make appropriate judgments. To do this, you must learn the rules. These rules should be on the tip of your tongue. On the field, people expect you to make a call immediately. Study football referee signals and practice them when you have the chance.