Earlier quoted context omitted.
> If you have shoes that give you such a boost, is it doping? Definitely not, as doping is about drugs. It may be cheating though.
Motor doping is the term for hiding a small electric motor in race bikes. So doping could apply to situations outside of using drugs to enhance your body.
I used the definition from Wikipedia:
> In competitive sports, doping is the use of banned athletic performance-enhancing drugs by athletic competitors.
Admittedly, this may not be the best source.