Looks like 132 per hour is what the research actually says. The actual paper is pay walled, but this describes it:

https://www.cbc.ca/radio/thecurrent/the-current-for-septembe...

Another fun quote:

The 1984 World Chess Championship was called off after five months with both competitors — Anatoly Karpov and Garry Kasparov — experiencing exhaustion. Karpov was reported to have lost close to 20 lbs.