Early research from Norway suggests that endurance training in older individuals may help regulate the length of telomeres in old age, thus slowing the aging process. Telomeres are the caps on chromosomes that are potential markers of biological aging. The Norwegian researchers also found that telomere length is positively associated with VO2max. However, the small sample size and cross-sectional design prohibits any conclusions about causality.
PositiveTip: Adequate physical activity is important any any age for good health.