"Mean participant age ranged from 29 to 86 (median=55) years" I wonder what the results would've shown for a younger demographic? Feel like stagnation typically

"Mean participant age ranged from 29 to 86 (median=55) years" I wonder what the results would've shown for a younger demographic? Feel like stagnation typically increases with age, and I'd imagine the benefits are felt a lot more when your body has a worse baseline to begin with. Great study regardless, glad light is being shined on the benefits of physical activity!