As a comparatively niche sport, there’s very little in the way of scientific study conducted on Jiu-Jitsu. As time goes on and interest in BJJ grows, we’re starting to see a gradual increase in the number of people interested in the more technical aspects of the sport. Just recently, a group of scientists conducted an experiment to see how long it would take a selection of chokes to put an opponent to sleep.
They decided to look exclusively at chokes that did not require the use of the gi, so their findings are also applicable to MMA, although no gloves were used.