Sorry!
Concerning the claim that the probands with lower grip strength had a 45% higher risk of death - does than men: for all causes? Not just due to falls (where, I am assuming, grip strength can prevent falls or at least reduce their severity)?
Also: Isn't it an established fact that grip strength is the most difficult to increase through training (exercise)?
I can easily imagine an erstwhile "couch potato" doubling or even tripling the strength of, e.g., his legs or his arms - but of his grip?! Is that even possible?
Regards,
If you ignore the initial phase of learning a new movement and neurological adaptation that occurs during the first two months and call that baseline, a couch potato may never double their main lifts (bench, squat, deadlift). Grip is no different; you don’t even need grip specific exercises. Deadlifts, bent rows and pull ups will dramatically improve grip and can be started at any fitness level. If you can do it, climbing improves grip the most, but requires significant fitness level and lean body weight.
“….but of his grip?! Is that even possible?“
Of just yeah but hell yeah. Grip strength is created by muscles. My job among other things promotes grip strength specifically. Between operating pneumatic hammers for hours on end, dragging 300 feet of 3/4 inch inside diameter air hose, 50 foot lengths at once,three per hand, hanging on to an industrial size blast nozzle for hours and dragging a 150 lb blast tank over rough ground for up to 350 feet you develop half decent grip strength relatively speaking. I’ve heard guys in my industry joke about it once or twice over the years.
Kettlebells are great for grip strength. You have to hang on to them or they go flying!