I monitor my pulse rate while using a treadmill.
During my four minute cool down period, with the belt traveling the equivalent of 3 mph, when my pulse dropped to about 115, I could step off the belt and my pulse would rise to about 123.
I believe that this is telling me that the motion of my legs is contributing to circulation of the blood and reducing the burden on the heart.
Thus, I believe that CPR efforts could be improved perhaps dramatically by having bystanders to the CPR effort flexing the leg muscles or massaging the leg muscles. A device to compress the larger muscles using air pressure, like a blood pressure cuff, might also be beneficial. I'd bet that such a device could circulate quite a bit of blood without any heart activity at all.
That is interesting. Had never thought about that.
Do you work in the medical field?
Maybe they should start using those “pants” they put on you in the hospital to increase circulation- not sure what they call that.