Football (Soccer)

Football/Soccer Players Flywheel Training

In association, football, or soccer, flywheel training on the kBox and kPulley is used in the regular training protocols by head strength & conditioning coaches of many elite teams, including teams in all major premier leagues of Europe as well as the Major League Soccer in the US.

Football coaches use kBoxes and kPulleys with their athletes mainly to develop sprint speed and for injury prevention.

Sprint Speed

Sprint speed is highly correlated to squat strength, but like most other athletes outside of weightlifting, football players are not very schooled in Olympic lifts or powerlifting. The kBox allows these athletes to perform squats both with high loads and high power in a safe way to increase strength and performance without risking injury.

Injury Prevention

In prevention, there is mainly focus on hamstring strains that are responsible for a big part of the professional players’ “away from game” time. Two top risk factors for hamstring injuries are the previous injury and low eccentric strength in hamstrings compared to concentric strength in quads, called H: Q ratio. Several elite football teams use the kBox and kPulley both in preparation and prevention but also in the rehabilitation of hamstrings with great success. Deadlifts and hip extension with eccentric overload target the posterior chain and build strength both in preventing tears but also to boost sprint speed and performance.


The benefits of flywheel training in football, as compared to traditional training with gravity-based equipment, include:

  • Easy to train in a group with individual differences in strength and height.
  • Effective sessions due to the short time in shifts between users.
  • Safe training, less technique dependant.
  • Mobility, possible to train in the field combined with play or sprints or to bring on tours and games away to work with the resting or injured players.
  • Wide range of training modes: heavy or explosive, unilateral, or bilateral.
  • Train despite upper limb or shoulder injuries using the harness or belt.
  • More effective in building functional strength and increase performance than weight stacked machines and traditional free weights.


Clients include top teams in the premier professional football leagues of Europe, such as Real Madrid, Juventus, Paris Saint-Germain, Chelsea, Borussia Dortmund, Arsenal, Tottenham Hotspur, FC Zenit, Sevilla FC, PFC CSKA Moscow, HSV and Leicester City.

In the US, the kBox and kPulley users include MLS teams DC United, New York City FC and Seattle Sounders FC, plus NWSL team Chicago Red Stars.

The kBox and kPulley are also in use by top international academic institutions developing football talents such as the highly respected Quatar-based Aspire Academy, which also conducts studies of hamstring strains in football.

See also

For an interview with a Nordic elite strength coach on using the kBox in football training, see this video.

Professional football players Rasmus Elm and Pontus Wernbloom of CSKA Moscow featured on the kBox in Swedish national newspaper Aftonbladet.

Go back to applications for sports performance or contact us.


kBox4 Active

Kickstart your Flywheel Training with our entry-level model. The perfect device for strength training, rehabilitation, injury prevention, and training in general. Available with our free Flywheel Training app to design all your kBox workouts.

  • Ideal for...
  • • Home Gyms
  • • Personal Trainers
  • • Group Classes
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kBox4 Lite

Broader range of resistance provided by the lightest kBox model, practical to pack and bring with you on the move. Its built-in kMeter feedback system allows you to monitor your progress in real-time.

  • Ideal for...
  • • Travelling Athletes
  • • Fitness Studios
  • • Physiotherapy Rooms
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kBox4 Pro

The premium and best-selling kBox model with the largest performance area. Made for intense workouts and serious strength building exercises. Its built-in kMeter feedback system allows you to monitor your progress in real-time.

  • Ideal for...
  • • Professional Teams
  • • Performance Centers
  • • Physiotherapy Clinics
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The kPulley unlocks a variety of horizontal movements, creating limitless training possibilities especially when combined with the kBox. Its built-in kMeter feedback system allows you to monitor your progress in real-time.

  • Ideal for...
  • • Professional Teams
  • • Performance Centers
  • • Physiotherapy Clinics
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The LegExx is optimized for leg extension training sessions. It aims to isolate and strengthen the quadriceps muscles and it comes with a built-in kMeter feedback system.

  • Ideal for...
  • • Professional Teams
  • • Health Clubs
  • • Physiotherapy Clinics
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