Exercise, specifically resistance, such as weight lifting, not only has the ability to increase physical strength but it can help rejuvenate the muscles in the elderly. This was the conclusion of a study conducted by Simon Melov Buck Institute and Medical Centtro Mark Tarnopolsky of McMaster University in Ontario Canada. Previously it was found that as people age mitociondrias operation of which are part of the cells that produce energy, decreases. However, this study found that through the exercise managed to reverse this so that the mitochondria of people aged 65 age came to work as a younger person.
The study lasted six months and consisted of two weekly sessions of one hour each. It was found that four months after completion of the participants maintained this strength and muscle mass gained despite exercising with less intensity than during the study.
In another study conducted with people aged between 60 and 75 years old, a group of researchers from the University of Pittsburgh found that people who lose weight through diet only lost less muscle mass than those that in addition to diet exercised. When weight loss is done purely on the basis of diet, the result is that you lose both fat and muscle mass and strength. Exercise prevents muscle loss almost completely. This study used exercise consisted of walking or running a stationary bike. It is possible that an exercise program that includes strength training not only managed to largely avoid the loss of muscle mass but even achieve this increases.
See: Buck Institute for Age
Research. Exercise Reverses Aging In Human Skeletal Muscle. ScienceDaily. May 23, 2007.
Amati et al. Separate and Combined Effects of Exercise Training on Exercise and weight loss efficiency and substrate oxidation. Journal of Applied Physiology, 2008, 105
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