study concluded that female athletes with high testosterone levels have a significant competitive advantage over those with low fT in 400 m, 400 m hurdles, 800 m, hammer throw, and pole vault. Scholars question whether any advantage should be considered “unfair” if it occurs naturally and outside the control of the athlete. For example, elite athletes have greater aerobic capacity and endurance in comparison to the general population. Furthermore, these cases have elicited criticism of the elite sporting system by showing clear vulnerability of women athletes to unnecessary medical interventions under duress, applied even though there was no evidence of cheating and no evidence of athletic advantage. As with previous forms of sex testing, testosterone testing has been regarded by many as humiliating, unnecessary and discriminatory. Katrina Karkazis, Rebecca Jordan-Young, Georgiann Davis and Silvia Camporesi argued that the new IAAF policies on hyperandrogenism in female athletes will not protect against breaches of privacy, will require athletes to undergo unnecessary treatment in order to compete, and will intensify "gender policing". In fact, high-performing female athletes show a rate of Complete Androgen Insensitivity Syndrome much higher than the general population—which shows 1 in 20,000–50,000, compared with elite athletes’ 1 in 429. They recommend that athletes be able to compete in accordance with their legal gender. In November 2015, the IOC held a meeting to address both its hyperandrogenism and transgender policies. In regards to hyperandrogenism in female athletes, the IOC encouraged reinstatement of the IAAF policies suspended by the Court of Arbitration for Sport. It also repeated an earlier policy statement that, to "avoid discrimination, if not eligible for female competition the athlete should be eligible to compete in male competition". In February 2016, it was made known that the IOC would not introduce its own policies that would impose a maximum testosterone level for the 2016 Summer Olympics. On November 1 of 2018 the IAAF adopted new criteria regarding "Differences of Sexual Development" for female athletes competing in the following races: 400 m, 800 m, 1 mile, hurdles, and events that include a combination of these distances. Athletes with testosterone levels equalling or exceeding 5 nmol/L or who are "androgen sensitive" and want to participate in above-mentioned events at the global level (including recognition for setting an international record) must legally be female or intersex, must get their testosterone levels below 5nmol/L for six consecutive months and must ensure their levels