My question to the Instigator . . .
Wednesday, April 29th, 2009I overhear all kinds of discussions between trainers and clients on training tips, strategies to build core strength and methods of losing body fat at the gym I train at. Nothing gets me more fired up than the misuse of the global term: CORE TRAINING. For example, I hear comments like “Doing exercises, like a seated overhead press on a ball makes them more functional for your core.” Or, “by using the stability ball you will activate more core muscles on every single exercise.” This generalized rationale is making my head spin as trainers gleefully sell the false cause and effect relationship between the use of the stability ball and the definition of core training.
So if exercising on a stability ball trains your core and is now bought into by the masses . . .
Like any critical scientist, my question to the instigators of this idea is
– Compared to what?
To cut to the chase (and yes, I have a reputation for this), you don’t need to do anything on a stability ball to strengthen your “core” muscles. If your main goal is to build muscle, doing more exercises on a stability ball isn’t just unnecessary, it may actually slow your rate of muscle growth and strength development!
Here’s my pitch:
According to over 90% of the personal trainers I’ve met, performing strength exercises on an unstable surface, such as sitting on a standing ball or standing on a BOSU, is supposed to place a greater emphasis on some of the muscles in your core, helping to improve core stability, protect against back pain, improve athletic performance, and so on. Right?
Well heck, these exercises are often a lot harder than their more stable counterparts.
Hmmm, let’s qualify “hard.”
You are simply working hard to stay balanced. And because these exercises have a high “novelty factor”, this creates mayhem for your nervous system as your muscles try to sort out the wibbly-wobbly’s.
I have even heard an international speaker claim that “performing three set of squats on a BOSU ball is the equivalent of three ordinary sets, because you engage more muscle groups to stabilize yourself.” Good Gawd.
While there are benefits to exercises done on an “unstable” surface, it’s my opinion that they are as overdone as Elizabeth Taylor’s make-up job. I guess I shouldn’t complain – it keeps personal trainers out of the lifting area where the real work is accomplished – (more room for me and my clients).
Time is money folks and if someone is paying you good money (in this economy), you better deliver. And if your client tells you they need to improve their core strength – then teach them how to lift. And you know what else, that might mean YOU need to know how lift. And if you want to learn – call me; I am more than happy to share what I know. 604.908.1321.
What is the core?
For the purpose of this article, let’s define the core as the muscles of the trunk and hips — basically, anything that isn’t the head, arms or legs. And it’s these muscles that are supposed to benefit from exercises done on an unstable surface, such as the BOSU and the stability ball.
As I mentioned earlier, there are benefits to these kinds of exercises. For example, I remember reading an article about a pro snowboarder who did a lot of work on unstable surfaces. This type of training could definitely help to improve his balance and prepare him for the unstable environment that he’s going to experience on the slopes.
And therapists have been using unstable exercise devices (e.g. Wobble boards and Rocker boards) for years to help with the rehabilitation of knee and ankle injuries. Perfect for restoring a neuromuscular deficit.
So, there is a time and a place for instability. But it’s not a universally effective way to make all exercises better, especially if you’re trying to build significant strength levels.
Let’s get strong!
The equation for muscular growth is a time under tension + progressive overload, which involves adding more weight to an exercise over a given period of time. But if you’re exercising on an unstable surface, the amount of weight you’re able to use is going to be reduced. And using a lighter weight is a step in the wrong direction if you want to get bigger and stronger. Yes, even for the girls – throw away the pink dumbbells and chalk up ladies!
At Human Motion, we teach people how to get strong. Strong at the basics first (squats and deadlifts), then get strong at more complex lifts (cleans and snatches). In the gym, I see clients doing squats on BOSU’s when they can barely squat properly on the floor. I question this progression as adding an element of instability will only teach them incorrect patterns of movement. When more than 50% of strength in athletics comes from a highly tuned nervous system, developed from correct patterning, this plan will lead to nowhere.
There is an inverse relationship between the stability of the base support and the power potential of the lifter or athlete. Wobble boards used in an athletic training setting will help the athlete get better at standing on a wobble board. Where is the transfer to sport?
If you are looking to develop true core strength, you have to lift.
The old time strongmen, pound-for-pound, were some of the most powerful men who ever lived. Sport historians have written about Eugen Sandow, Arthur Saxon, Louis Cyr to name a few whom all displayed impressive levels of strength and power. These men put on strongman shows, wrestled and engaged in various other sporting endeavors. They would execute feats such as the two hands anyhow, the bent press, overhead support lifts, cable and strand pulling, swings, bridging feats, bending feats, gymnastics, hand balancing and more.

What did ALL of these strongmen have in common? Crazy core strength! They didn’t get it by doing crunches, they didn’t get it by wearing a belt and they didn’t get it by hanging out on a wobble board. They developed their torso strength and stability by engaging in compound multi-joint movements, that required every muscle group to work together, at the same time to execute complex movements.
So, what’s the bottom line here?
Leave the wobble boards and BOSU’s to the rehab experts or the prehab experts. Grab a good pair of flat-soled shoes, a handful of chalk, an Olympic bar and some plates and learn to lift. I haven’t done a crunch or a sit-up since the days of gym class, and I got off the balancing devices once I began cultivating my own company and its philosophy and I am the strongest I have ever been.
See you at the gym!
Coach Carmen






