High intensity does border on leading to injury

Where are you getting this? The study was about various intensities of cardio - I didn't see it noted, but I'm guessing the high- and medium-intensity groups were on a treadmill, elliptical, or similar. Pretty small chance of injury for the durations they mention, especially as the subjects were monitored while exercising.

And I'm not really surprised by the study - building lean muscle mass takes resistance training, which wasn't part of the study. The study results appear to be inline with what was common knowledge/experience.

And if you're injuring yourself regularly during weight training or other gym activities, I'd suggest you might hire a good coach/trainer for guidance and programming, because that shouldn't happen either.

▲

yodsanklai 6 hours ago | parent [-]

> And if you're injuring yourself regularly during weight training or other gym activities, I'd suggest you might hire a good coach/trainer for guidance and programming, because that shouldn't happen either.

After a certain age, it's difficult to train somewhat intensely without risking injury. You can always find some exercises that work and maintain a physical activity, but this may not be enough to maintain your muscle mass or your stamina.

▲

alistairSH 5 hours ago | parent [-]

Sure, thus the "find a trainer" suggestion. :shrug: You aren't wrong, but for somebody who has been active and healthy, intense exercise deep into their 60s should be possible.

	▲	yodsanklai 3 hours ago \| parent [-]
		> Sure, thus the "find a trainer" suggestion Not sure a trainer is a silver bullet. After 50, it gets increasingly harder to improve as we become more and more injury-prone and start developing chronic issues. Staying active and fit should be reachable for most, but high-intensity or competitive sports become a privilege for those with good genetics. Most of us switch to low-impact sports such as cycling, swimming, hiking, bodyweight training and so on...