Sunday, August 4, 2013

Are Kettlebells Or Dumbbells Superior For Gym Based Strength Gains?

By Russ Howe


If you were to put kettlebells vs dumbbells into a fight to see which training method returned the best overall strength gains, who do you think would come out on top? This is a popular gym argument which has raged for many years, and today we will use the latest science to teach you the answer.

While it's not uncommon to meet individuals who swear blindly that following one protocol is the best way to build muscle and lose body fat, the general consensus is that the optimal results can be achieved through a varied combination of both methods as well as lesser known styles, including resistance bands and suspension trainers.

However, a recent study pitted the kettlebell against free weights in a study to determine which method would return the greatest strength gains overall. The results were quite profound.

In the study, researchers ordered their first group of subjects to perform a six week course of swings, goblet squats and accelerated swings using a 35 pound weight. Improvements of squat ability, vertical leap and power clean strength were documented.

Their second group of subjects were put through a 6 week course of squats, high pulls and power cleans using free weights in a bid to boost strength on squat, power clean and vertical leap. They used a weight which was equal to 80% of their one repetition max.

The results clearly showed that the free weight group enjoyed much greater gains in strength than the kettlebell group. First of all, the barbell/dumbbell group noticed a massive increase in their squat strength of 15%, as well as an increase in power clean strength of 10% and a vertical leap boost of 4%.

Their kettlebell counterparts, on the other hand, could only manage a 4% increase to their power clean and added just 1% to their vertical leap. Those results were quite surprising, given the explosive nature of kettlebell training in general.

If you want to base your training program purely on the scientific findings, then free weights clearly return the greatest strength gains.

Of course, it would be very silly to take this study on face value and insist that you are only going to train with barbells and dumbbells from now on. Just because they were shown to be superior across the board for strength gains does not mean that any other form of training is useless. For example, body weight jump squats have been shown to recruit 40% more muscle fibers than barbell squats, does this mean you should never squat with a barbell again? No, of course not.

While free weights have now been shown to trump other equipment in the strength category, that doesn't mean they are the only method you should use. For instance, there are a number of exercises which can be performed using a kettlebell which are simply more functional than using conventional dumbbells and barbells. The swing is a perfect example of that.

If you merely wanted a straight answer to the kettlebells vs dumbbells question then you certainly have that now, but the best approach to building a well-rounded training program comes from combining aspects of both.




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