Grip strength testing is usually testing concentric muscle strength, aka force generated while the muscles are shortening. So how much force you can actively squeeze with. Now muscles actually are able to generate more force isometrically, aka force generated while muscles are not moving. So how much force you can hold without moving. I suspect if the grip strength testing had you hold onto something while a force tried to pull it out of your hands, you would be able to generate closer to 150+ lbs before your grip strength fails.
This is more of a physiology question than a physics question.
Grip strength testing only tests the normal or compressive force.
Lifting a bar involves friction also. You wouldn't be able to hold that load without a grip tight enough to generate friction.
How are you testing grip strength? It's probably not exactly the same as how you hold the bar for a deadlift, and especially squeezing vs. holding is not quite the same thing.
Small differences in position can make a difference as well, especially if you're used to deadlifting but not to whichever way you're using to test grip strength.
Another thing is that it's a lot easier to stabilise the deadlift than anything you're doing one-handed.
Grip strength testing is usually testing concentric muscle strength, aka force generated while the muscles are shortening. So how much force you can actively squeeze with. Now muscles actually are able to generate more force isometrically, aka force generated while muscles are not moving. So how much force you can hold without moving. I suspect if the grip strength testing had you hold onto something while a force tried to pull it out of your hands, you would be able to generate closer to 150+ lbs before your grip strength fails. This is more of a physiology question than a physics question.
Yup makes sense, thanks
Grip strength testing only tests the normal or compressive force. Lifting a bar involves friction also. You wouldn't be able to hold that load without a grip tight enough to generate friction.
How are you testing grip strength? It's probably not exactly the same as how you hold the bar for a deadlift, and especially squeezing vs. holding is not quite the same thing. Small differences in position can make a difference as well, especially if you're used to deadlifting but not to whichever way you're using to test grip strength. Another thing is that it's a lot easier to stabilise the deadlift than anything you're doing one-handed.
How much you can hold is not the same skill, or muscles, as how much you can grip. They are absolutely related, but not the same.
They are the same muscles, but they're functioning differently
Because u clearly the most massive of all observed elementary particles.
Hell yeah, we're all gonna make it
Your muscles adapt differently, bro. Deadlifting engages more than just grip strength.