I think the answer is yes I think there is a strong drive to win, yet it is with any competition. In other words, it does not have to be official sporting events. Perhaps it is a natural drive (Survival instinct) that psychology combined with biology may answer. Performance enhancement itself has been with us perhaps since man arrived and had to fend for food and survive the environment.
Why, even length of sleep, carb loading for runners, and natural supplements are used as examples. Kenyan runners eat a diet rich in kidney beans giving protein and rich in magnesium and iron. There are even surgeries today to enhance performance and talk of gene doping dating back to 60's.
Now for TMI . . . Doping is 'banned' athletic performance-enhancing drugs. The Olympics protocol tests for ten categories including stimulants. The reason why chess does testing is it has been recognized by the Olympics as a possible event. The testing controversy for chess concerned major events beginning 1999, so is not new. The recent study looked at:
** Methylphenidate sold as Ritalin
** Modafinil sold as Alertec, Modavigil and Provigil
The two drugs improved cognition and decision making respectively by 13% and 15% while caffeine was 9%. Interestingly the two drugs indicated play was slower. So much that they had to eliminate 183 games analyzed of 3,059. Both are prohibited by the World Chess Federation (FIDE) along with others within the guidelines of the World Anti-Doping Association (WADA). Caffeine is not prohibited by the World Chess Federation (FIDE), but is monitored.