Physiological Advantages

Flywheel training on the kBox offers many advantages over traditional strength training, resulting in proven gains of strength and mass.

The resistance is variable and unlimited. Eccentric workload can be easily achieved with superior ergonomics.


Variable Resistance

Among the advantages of flywheel training, variable resistance may be the most important, resulting in proven gains.

The resistance spectrum of a kBox is completely unlimited, as it depends solely on the force you use. Hence, flywheel training is not just solely for elite athletes or rehabilitation.

The resistance is also variable between repetitions and you can easily work maximal repetitions all through the set, increasing your hypertrophic response.

Further, as flywheel training gives the possibility to control the level of resistance within the repetition, you can max out all through your range of motion. Learn more.


Eccentric Training

Eccentric Training: The Force-Velocity RelationshipYour muscles are stronger in the eccentric phase of its motion, but it is difficult to reach your maximal eccentric power in traditional weight training.

In flywheel training, you can use the kBox to achieve eccentric training with overload safely without help. Learn more.


Harness Ergonomics

The pressure over the shoulders when doing traditional barbell squats is a big limitation for many. Often, serious bruising can be seen after heavy sets. Furthermore, the discs in the lumbar spine are under a lot of pressure, even if the athlete has a good technical skill. For tall people, individuals with a weak midsection or persons with back problems, squatting is almost impossible and may be accompanied with a lot of discomfort or pain.

With the kBox, you are able to work out with maximal or closer to maximal intensity, since the harness equalizes the pressure over the shoulders and also relieves the lumbar spine of pressure. With a less perfected technique, the harness puts the force over the lower back, instead of the shoulders, which shortens the lever and the momentum drastically on the lumbar spine without compromising the training effects in the muscles of the lower body.

The kBox is also almost completely silent and the risk of bumping into others is low.




Go back to flywheel training.

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Proceed to learn about
the kBox flywheel training device.