The overhead squat is a great exercise. However, due to the emphasis on stabilizer muscles, you have to use a much lighter weight than with a conventional squat or deadlift. Therefore, the large muscle groups, those that will truly drive adaptations and gains in strength and muscle mass, aren't as stimulated as they should be. Gains in strength and muscle mass using the OHS as a standalone exericse will be slower than with a program that includes and prioritizes the major lifts. The OHS also neglects many of the muscles used in "pulling" motions.DanMartin wrote: Please elucidate?
A program such as Starging Strength is not a bodybuilding program, and will give you all the "useful" strength you need. A 15xBW OHS is great. I can't do it myself. But it really should be a secondary goal once you've already built up a decent strength base. And doing only OHS's all the time is a slow, inefficient way to build that base.
The OHS is also difficult to load incrementally in order to make regular progress (because you're limited by what you can power snatch or push-press/jerk with a snatch grip, and by your "core" and shoulder stability, not by your actual leg strength) and prone to sudden failures that require dropping the barbell, which is a problem if you're not on a proper platform with bumper plates.
All in all, for a young novice trainee trying to gain weight and strength for rowing, the OHS should certainly not be at the center of his training. Adding them on the side if you have the time and energy is fine.