The phrase "performance enhancer" refers to something that helps a person or thing become better, faster, or stronger in terms of their abilities or performance. Full definition
Some use these accessories as performance enhancers rather than protection. (fitnessandpower.com)
Even if a far more modest result than 31 percent turned out to be true, these sorts of findings could mean that tDCS is set to become a significant performance enhancer in the sporting world. (scientificamerican.com)
Selig and Fehr told the House committee that baseball's drug - testing program had significantly reduced the number of positive tests of illegal performance enhancers since its inception in 2003. (si.com)