A sports-specific database. Don't get freaked out that most of it isn't full-text. Just use the Find It button to request a copy and we'll email it to you in about 2 days.
Because this database is all sports-based, you'll need to search more than just a sport. What about the sport do you want to focus on?
Use the Subject Terms to locate other relevant articles on your topic. These terms might be the appropriate scientific or medical terminology, etc.
Read the abstract before reading (or requesting) the entire article.
Select the "Peer Reviewed" option when on the Advanced Search Screen
Another option is to select "Journal Article" as a Publication Type on the Advanced Search