The Short Version
The best available evidence directly contradicts this claim. A meta-analysis published in a high-authority NIH-indexed journal found no statistically significant difference in testosterone response between combat sports and other sports. Multiple studies show testosterone can actually decrease after combat sports activity, and basal testosterone levels in martial artists are statistically indistinguishable from those of other athletes. Resistance training and HIIT produce comparable or robust testosterone responses, undermining any claim of combat sports superiority.