I'm 58 and a male resting heart rate over 10 seconds 9 after 20 fast jumping jacks over 10 seconds 20 after 20 slow jumping jacks over 10 seconds 15
Problem with this study is how much intensity is applied to the jumping jacks, one person could do these with just spreading the legs maybe a foot apart and do a slow pace would not see a whole lot of increase in the pulse rate. Another guy, the way I did it, was as fast as I could go with legs coming about 2 feet apart, which did increase the rate higher then if I had done a slow lazy jumping jack. Of course the variable in the jumping jack is going to between slow and fast with no real way of telling who did what. So for fun I did both, of course allowed my pulse to settle down to 9 beats per 10 seconds before doing the next set.
I put the male information in because rates should be a bit different between male and female.
