Quadmill
The Quadmill focuses on building strength and endurance of the lower body using eccentric muscle conditioning, as opposed to concentric conditioning. The Quadmill is tremendous for sports that require shock-absorbing strength and endurance, as well as being an excellent rehabilitation tool for the lower extremities when coming back from an injury.

Eccentric conditioning of the legs and low back is so important that it is surprising that the need hasn't been met now. Alpine skiing is approximately 85% eccentric work by the lower body, as are the other downhill sports. All running and jumping sports are a combination of concentric and eccentric work by the legs and lower back, depending on whether you are pushing off or are absorbing a landing. The important idea is that if the lower body is eccentrically well-conditioned, it can then smoothly and safely absorb the impact of gravity and velocity imposed upon it by these activities…time after time after time.

Examples of activities that would benefit from the use of the Quadmill:

• Basketball
• Volleyball
• Football
• Cross-country running
• Mountain biking
• Soccer
• Tennis
• Motocross
• Equitation
• Skating and hockey
• Surfing and windsurfing
• Snowboarding
• Hiking (downhill)
  

The linear tracking motion that is produced in the hips, knees, and ankles places no stress upon collateral structures. With complete control of the machine's speed and duration settings, it can be used safely in the middle and later stages of rehabilitation of the lower extremities. And with its gentle, rhythmic exercise of the lumbar and gluteal muscles, the Quadmill can help mobilize people with chronic low back pain.