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.

If there is one thing which many people mistakenly do in gyms around the world, it is buying in to the false belief that one way of training is the best over any other method. This is particularly true with the two mentioned above. Many people are either on one side of the fence or the other. Optimal results can be achieved by combining these methods with lesser known techniques, such as yoga, suspension trainers and body weight exercises.

However, recent scientific research looked into the kettlebell training style in direct comparison to free weight training in a bid to put an end to the arguments among fitness enthusiasts.

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.

After the six week course was over, the results were overwhelmingly in favor of free weight training. Barbell squats improved one rep max on squats by a huge 15%, whereas goblet squats only resulted in a 5% increase. Then the free weight group also enjoyed a 10% strength boost to their power clean and 4% vertical leap.

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.

So if the results of this study from California State University, Fullerton are to be used as evidence in ending this popular argument then free weights certainly won the war hands down.

However, this would be ill-advisable. A combination of various different techniques is the key to finding a well balanced, progressive training program which gives you a continuous plethora of new results. By limiting yourself to one training style, you are waving goodbye to various other techniques you could have picked up if you were only a bit more open-minded.

The best way to develop a well rounded training program is to use aspects of different training methods until you find something which works for you. It is not uncommon to see bodybuilders, who are primarily known to use free weights and machines, adopt exercises like swings into their routine from time to time.

So, who wins the battle of kettlebells vs dumbbells? If the latest scientific research is to be used as a barometer to end the argument then you have to jump on the side of free weights.