Functional Eccentric Training

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Functional eccentric training is something we are going to be talking about in the office for quite a while because reACT, the newest addition to the BStrong4Life program is finally here. reACT is a functional eccentric trainer, and what that the heck is that you might be asking. To describe the reACT machine we must first discuss eccentric exercise.

Eccentric loading is a key component of many of our daily activities as well as athletic events. Eccentric loading can best be described as the landing phase of walking and running, walking down stairs or a hill, landing from any jump, squatting down to lower an object of pick something up from the floor, any activity where someone is on their feet running with sudden changes in direction, decelerations, or stops, decelerating the arm when throwing, and downhill skiing.  Eccentric loading is involved in almost all of our daily activities and most sports but eccentric training is not a common component of the average person’s workout including the average athlete.  To better understand eccentric loading and training it is important to review isometric and concentric muscle contractions.

Concentric muscle contractions are used any time a muscle shortens against some sort of resistance and occur whenever you are projecting some sort of force externally.  Examples of concentric muscle contractions include throwing an object, lifting any object or weight against gravity, or the push off phase of running and walking.  Isometric contractions occur when a muscle contracts with little to no joint movement they occur most when we are stabilizing or preventing

movement. Muscles are capable of producing much more force eccentrically compared to concentric or isometric. During an eccentric contraction, force production comes from the contractile element of the muscle and the connective tissues such as the tendons. During isometric and concentric contraction force production comes only from the contractile element of the muscle. Eccentric force production increases as the speed of movement increases but during concentric contraction the opposite is true; force production decreases with increased speed.

Overall eccentric training results in a more rapid increase in muscle strength and size over concentric training and even more interesting is that the strength gains in eccentric training carry over to concentric movements but not the other way around. Eccentric training also requires a much lower level of oxygen consumption and cardiovascular stress and a lower rate of perceived exertion for any given level of force production. As such, eccentric exercise has been proven to be ideal
for seniors and those with decreased cardiovascular capacity because it quickly and safely builds muscles and decreases fall risk significantly without overtaxing their cardiovascular systems!

Client using the reACT for his first time.

Client using the reACT for his first time.

Research has also shown significant health benefits from a single thirty minute weekly bout of eccentric exercise done for eight weeks including:

  •  Significant improvements in Resting Energy Expenditure
  •  Increased Fat Utilization
  •  Improved Blood Lipid Profiles
  •  Decreased Insulin Resistance

The reACT functional eccentric trainer allows us to train our patients eccentrically but also helps them improve their balance, stability, and movement patterns. reACT uses a platform which rotates in a reverse elliptical pattern which forces the lower body to absorb the kinetic energy of the platform with no impact. By controlling the platform speed and posture the level of challenge can be precisely matched to the user so that it can be used by a wide range of abilities from seniors  to Olympic athletes.

 
 
The reACT functional eccentric trainer is an addition to the BStrong4Life family of technologies and procedures developed to help our patients live healthier, longer. If you would like to
learn more give us a call today, we would be happy to take you on a tour of our office and give you a sample of how BStrong4Life can add years to your life and life to your years.

 

 

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Posted in BStrong4Life, Exercise and Fitness, Injury Prevention, Osteoporosis

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