Power penia, the age-related loss of muscle power, may decline earlier and more rapidly than muscle mass or strength.

“Now, that's a very important metric because what it's telling us is that the drop off in strength and power is significantly greater per each year after age 40 than is the decrease in muscle size, telling us that we have to do something to offset that decrease in strength and power.”

“so power's going down strength is going down but not as much muscle mass is actually not because remember that's the order in which you lose things right you're going to lose power strength and size of muscle”

“so power penia being the age related loss of muscle power and so muscle power as opposed to muscle strength or muscle mass is you know your ability to generate Force quickly so standing up out of a chair or you know lifting something heavy with a high velocity that's those are all kind of examples of muscle power and why that's important is because you know like strength obviously but it's important for predicting your functional Independence and essential for activities of daily living essentially uh you know especially as you get older and so one of the ways to measure it is using just like a simple sit to stand test on a chair but like how quickly can you do that so how quickly can you sit down and rise from a chair we even you know in the study that we covered that's how they assessed muscle power and showed that it was correlated with actually longevity which was pretty interesting so what's unique about muscle power is that it seems to decline earlier start declining earli and then it declines more rapidly than muscle mass or muscle strength”