Hi Kelly. In my opinion, absolutely you can incorporate sports training drills into your workouts (assuming of course that you have the skill and expertise to do so). Sport-specific certification is a credential that those involved in training athletes often require in order to serve that particular client base. However, many of the very same exercises or drills can be used with non-athletes (I do it all the time with my non-athlete clients, including the elderly). That being said, this type of programming has to be carefully considered when putting together your drills since for the most part sports-drills tend to be at a higher-intensity and so therefore aren’t for everyone.
I hope that this helps.