A recent study by McMaster University in Canada found that women over 65 who worked out at least 2 hours a week had the skin molecular composition of those who were 25 years younger. The research credited myokine which are growth factors created by muscles pumped into the bloodstream.
In this study, scientists separated about half of the 29 participants selected for this research, men and women ranging between the ages of 25 to 84, and placed them in moderate to vigorous activities for at least three hours a week. The other half was made to work out at least an hour or mostly remained inactive. After obtaining a skin sample from the subjects’ buttock area, an area rarely exposed to the sun, it was noted that the samples from the active ‘Over 40’ subjects had skin that visibly resembled that of a person in their 20s or 30s. Further study later had the mostly inactive subjects over the age of 65 exercising each week over a three-month period. At the end of the trial, samples showed a considerable difference in their skin, noting that their outer and inner layers resembled that of a 20 to 40 year-old’s.
While this was a small study and further research needs to be done, it does further the knowledge that exercise has notable benefits, even after a short period of time.