Exercise is good for people, as everyone knows. But scientists have surprisingly little understanding of its cellular impacts and how those might vary by activity and the age of the exerciser
The toll that aging takes on a body extends all the way down to the cellular level. But the damage accrued by cells in older muscles is especially severe, because they do not regenerate easily and they become weaker as their mitochondria, which produce energy, diminish in vigor and number. A study published in Cell Metabolism, however, suggests that certain sorts of workouts may undo some of what the years can do to our mitochondria.
The study showed that the adults went through weight training, interval training, both or no training. More unexpected results were found in the biopsies muscle cells showing positive GENE CHANGE.
Interval training for younger subjects changed positive in 274 GENES. Interval training for older subjects changed positive in 400 GENES. In general terms, interval training is more beneficial for older subjects. Older peoples cells have changed positively in a more robust way through interval training.
This study was done through Dr. Sreekurmaran Nair, an endocrinologist at Mayo Clinic. You can read the whole article here. (Add link at home).