The Effect of Aging On Muscle
A study by the UPMC Center for Sports Medicine in Pittsburgh of athletes between the ages of 40 and 81 demonstrated that muscle loss considered typical in adults after the age of 40 has more to do with lack of use than aging alone. The study showed that the muscles used by the athlete's chosen activity were nearly indistuighsable from an athlete at the age of 40, proving that studies on the effect of age of muscle mass have focused too much on sedentary adults, and that the caliber of our golden years is quite self-determined. (They hypothesize a 70/30 ratio between lifestyle and genetics!)
It joins a growing body of evidence on what types of exercise are most effective for preserving muscle mass. While overall motor units (a group of muscle fibres commanded by a single motor neuron in the spine) decrease in the body over time, it's true, these can be preserved through use. Which means an activity with...