Category: training

How to Inertial Training ? Weights with TestYou GYRO

TestYou GYRO is an inert device, thanks to which we can make eccentric training of every part of body. While exercising we generate resistance only by power of our muscles, which makes training independent from power of gravity.

Inert exercises are a perfect choice in power as well as in functional training.

Main advantages of exercising with TestYou GYRO in power training are:

  • Enhancing power and muscle mass in short time
  • Increase of muscle power without big metabolic burden
  • Better mobility in joints
  • Enhancing explosive strength and sport performance

Inert training with TestYou GYRO is a gradual process. Power which is used to put device into movement in concentric phase is lower than power which “comes back” to athlete – which is a power in eccentric phase. It prevents muscle strains and other possible injuries while moving.

In an eccentric exercise power generated in muscle is maximal, that’s why the main effect of eccentric training is power growth. A typical person is 30-40% more powerful in eccentric phase than in concentric one. It means, that if we can make a squat with 100kg load, we should be able to put down at least 130kg load in a controlled way.


Inert training positively affect muscle functionality – enhance their power, speed and contraction dynamics. Training based on a concentric phase causes greater  hypertrophy than a traditional one.

What is more, we should mind that TestYou GYRO is a safe device, thanks to which we can make eccentric training without necessary help of coach. Adding to your training inert exercises is a stimulation for organism to enhance collagen synthesis and reconstruction of tissues in tendons. Thanks to it we will take care of our body and lower risk of having an injury.


Flywheel training

What is flywheel training

Flywheel training is an innovation that makes traditional training with weights less useful. It is based on applying the inertia of a flywheel instead of simple gravity to create optimal resistance and give you the opportunity to perform an eccentric training. In addition you can do many exercises using only one device and increase your strength in a fast, modern and most effective way.

Eccentric training and overload

The eccentric training method is based on slowing the lowering phase of an exercise. To reach your maximal force in the eccentric phase, you need to get eccentric overload which is much easier and safer in case of flywheel training.

Is the flywheel training for me?

No matter what your goal is, the answer is YES. Flywheel training is for all sport disciplines, rehabilitations and fitness, and can be used on every level of advancement. You can easily adjust the overload to your physical ability due to varying sizes of the flywheel.

What are the main advantages of flywheel training?

-improvement of general health
-faster muscles growth
-low risk of injury
-comparatively lower training costs

Scientifist Evidence

Effectiveness of flywheel training is confirmed by scientific researches.  Actually all studies comparing flywheel training vs weights training shows flywheel to be superior for increasing muscle power, strength, hypertrophy and athletic performance. You can read numerous articles in this field, here are some more important ones:

Effects of eccentric-overload training program on muscle-injury prevention and performance in junior elite soccer players.

Hamstring injury occurrence in elite soccer players after preseason strength training with eccentric overload.

Neuromuscular and balance responses to flywheel training versus weight training in older persons.


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