BOSU BALLS, WOBBLE BOARDS AND CIRCUS CLOWNS
Thursday, May 17, 2012 at 3:01PM 
The one thing that the above have in common is that all irritate the hell out of me. Well, clowns actually scare me a little but that’s another article.
The marketing behind “unstable surface training” has been effective at making people think there’s an easier, more effective way to train. And, people like doing things that are different - I get that. I like being creative in my programming too. But when I see young athletes (or adults) doing squats, deadlifts, curls or other circus acts on a BOSU ball or wobble board I want to 1. Laugh, 2. Ask their trainer where the jugglers and unicyclists are.
To be fair, there are some instances where their use is warranted. In his manual, The Truth About Unstable Surface Training, Eric Cressey noted that for athletes with ankle injuries the Bosu could help provide a rehab stimulus. Outside of that, the research on this topic points to virtually no benefits beyond entertainment value. In fact, studies have shown incorporating as little as 5% of your training volume on unstable surface training will make you weaker.
For starters, unstable surface training promotes abnormal motor patterns. Watch someone squat on one and you’ll see their knees cave in, feet pronate (turn in on the arch side) and hips internally rotate...it’s an ACL injury waiting to happen. A high percentage of us have trouble performing a perfect squat or deadlift on a stable surface - we don’t need any more instability!
Secondly, unstable surface training inhibits maximum force production. You can’t use near the same weight on a BOSU compared to a stable surface. A recent study in the Journal of Strength and Conditioning Research tells us that stable surfaces result in more muscle fiber activation and greater force production than unstable surfaces when performing lifts with equal loads.



