Exxentric Flywheel Training fo seniors

With its variable resistance and low impact, the kBox is highly suitable for strength training for older adults, both during rehabilitation and for general health and fitness.

The personal trainer or clinician working within the older adult demographic must have a comprehensive toolbox to serve clients with a wide range of physical conditions and performance levels, including pain, mobility and many other presentations. Thus, flywheel training on the Exxentric kBox is a versatile and effective choice to treat many of these conditions.

Objectives for Seniors

When seniors perform strength training, it is important that they can perform:

  • basic movement patterns that involve many muscle groups and joints,
  • movements where their balance  (i.e. body centre of gravity) is regularly challenged
  • drills with different load throughout the whole range of motion (ROM) where they might have “sticking points”. Sometimes, they might not be able to create and/or use adequate force due to limitations such as arthritis, weak muscles or decreased balance.

A detailed research summary with relevant scientific references about how to do and the benefits of strength training for seniors/older adults was published by PhD Scotty Butcher (Sept 2016).

Flywheel Applications

The applications of flywheel training for seniors are to a large extent similar to the general population for health & fitness. Also, in rehabilitation, the kBox is used by many physiotherapists working predominantly with older adult clients.

Beyond the benefits described on those pages, specific applications for seniors include:

Sticking Points

The variable resistance of flywheel training makes it superior to free weights or dumbbells and weight stack machines when it comes to resolving the problem of sticking points.

An example of such a problem is squats with a subject who is very weak in the lower end of range or who suffers from arthritis in the hip or knee joint, making it difficult to load in some specific angles. With the kBox there is no sticking point and subjects can go deeper in the squat as the load is determined by how hard you push. In this way, you can have a deeper range of motion and a light squat in the bottom and a heavier squat in the end range squat where the subjects are usually stronger.

The drill high pull is another example where the subject may previously have had problems. for example, when the fingers/wrists/shoulders cannot produce a high enough force in certain angles or position of the drill in the concentric phase. In this case, the subject can start spinning the flywheels by bending and extending the legs, then follow the movement with the arms through the concentric phase and break the force in the eccentric phase, where the subject is much stronger. This creates a training stimulus.

Eccentric Overload

Another superior benefit with the kBox is that the subject can be ”self-supported” to create eccentric overload which has been proven through research for seniors to efficiently develop e.g. tendon stiffness and power (Onambele 2008, see below).

Practical advantages

The kBox offers everything from the low force, low-speed training up to high forces, power training and the possibility of everything from pure concentric contractions to eccentric overload. All this provided in a safe, soundless and ergonomic way and with no risk of accident. With a small, mobile device like the kBox it also fits easily into a smaller clinic, where space is limited or even the client’s home when convenient.

Using a computerised feedback system such as the kMeter, you can monitor your client’s effort and power output, following their progression over time. This is also helpful if you want to limit their movement range or load. Visual feedback can also be a great motivational tool for your client.

Physiological advantages

The kBox uses flywheel technology which offers variable resistance, less need to shift weights and a force output that is determined by the client, which gives an effective and safe workout that has a lower risk of injury. The variable resistance also gives a variable lever offering a smooth resistance throughout the exercise, strengthening the muscle over the whole ROM. Also, the ROM is easily adjusted if you want to limit the depth of certain exercises e.g. a squat, where you can prevent your client going beyond certain angles (watch video).

The harness automatically distributes the pressure from the load equally over both shoulders and also reduces torque on the lower back if the client’s technique isn’t perfect. This is helpful for beginners as from the first day in the clinic, you can start doing squats and other functional lower limb exercises even if the client is completely new to the type of lift.

Eccentric load is widely accepted as the most effective way to treat tendinopathy and it has never been simpler than on the kBox. Using different types of methods you can create a significant eccentric load in all possible exercises.

Flywheel training has a solid foundation in scientific support. Important examples include studies with eccentric training in tendinopathy (Murtaugh & Ihm 2013), eccentric training for elderly (Gault & Willems 2013) and flywheel training with elderly (Onambele 2008).

Further reading

Go back to Applications or proceed to flywheel training equipment.


kBox4 Active

Our entry level model for the serious personal trainer or demanding home user. The perfect tool in strength and rehabilitation at our lowest price point.

  • Entry Level Model
  • Holds 1-2 Flywheels
  • kMeter Compatible
  • Weighs 15 kg
  • Starting at €1 410 / $1 635
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kBox4 Lite

Offers the lowest weight and best portability which makes it perfect for frequent travel without compromising the training.

  • Enhanced Portability
  • Holds 1-4 Flywheels
  • Built in kMeter
  • Weighs 9.5 kg
  • Starting at €2 300 / $2 665
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kBox4 Pro

Our premium kBox model with the greatest versatility and largest performance area. It’s ideal for sports teams, premium fitness clubs and physiotherapy facilities.

  • Largest Performance Area
  • Holds 1-4 Flywheels
  • Built in kMeter
  • Weighs 15.5 kg
  • Starting at €2 990 / $3 465
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The kPulley2 is the ideal horizontal solution for improving strength by offering flywheel training for rotational and pull exercises.

  • Horizontal Model
  • Holds 1-2 Flywheels
  • Built in kMeter
  • Easy to assemble
  • Starting at €1 890 / $2 190
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