Women who participate in sports, especially male-dominated sports, are sometimes derided as being masculine. Even though most sports emphasize stereotypically masculine qualities, such as strength, competition, and aggression, women who participate in sports are still expected to conform to strictly feminine gender norms. This is known as the "female/athlete paradox". Although traditional gender norms are gradually changing, female athletes, especially those that participate in male-dominated sports such as boxing, weight lifting, American football, ice hockey, and motor sports, are still often viewed as deviating from the boundaries of femininity and may suffer negative repercussions.