RAE
Thinks s/he gets paid by the post
Interesting study, though the results are about what you would expect. They studied a group of men and women ages 65 and older (mean age= 73) for 25 years (1989 through 2015), to see whether lifestyle factors (smoking, alcohol use, diet, exercise, etc) affected both total years of life (YOL) and "years of able life (YAL)). They define YAL as the number years where you can live without some kind of daily assistance. As expected, the people with what they considered to be the healthiest lifestyles were able to compress the "disabled period" of life to a shorter period of time, compared to those with less healthy lifestyles.
With regard to exercise, here is a quote from the paper:
"Exercise intensity was no longer significantly associated with YAL, YoL or YAL/YoL% but those who walked more blocks per week had significantly greater YAL/YoL%. Every 25 blocks walked per week was associated with 0.5% higher YAL/YoL%."
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5073015/
With regard to exercise, here is a quote from the paper:
"Exercise intensity was no longer significantly associated with YAL, YoL or YAL/YoL% but those who walked more blocks per week had significantly greater YAL/YoL%. Every 25 blocks walked per week was associated with 0.5% higher YAL/YoL%."
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5073015/