From NBC News:
"A simple test that looks at how easy -- or difficult -- it is for you to sit down on the floor and then get back up may help predict how long you’re going to live, a new study shows.
Middle-aged and elderly people who needed to use both hands and knees to get up and down were almost seven times more likely to die within six years, compared to those who could spring up and down without support, Brazilian researchers reported Thursday in the European Journal of Preventive Cardiology."
I wonder if it ever occurred to these researchers, that older people lose strength and that is the reason that they cannot rise without using their hands. And it follows that, the older a person gets, the more likely they are to die.