Al-'Arifi also stated that "Prince Nawaf would not like his wife or daughter to participate, and thus he should likewise be eager to protect the reputation and virtue of his Muslim sisters." Of course there's nothing wrong with trying to protect people's virtue and reputation; however, the fact that this only applies to women and not men is telling. Women under Islam are seen as sex objects only, which is why a man's female relatives must be covered up and controlled at all times in order to protect the family's honor.
Translated from Donia al-Watan, 26 November:
Al-'Arifi Demands that Saudi Women Be Stopped from Participating in the Olympic Games Because It Is Forbidden
Donia al-Watan (Gaza), 26 November 2011
Shaykh Muhammad al-'Arifi, member of the Muslim Scholars' Association and a well-known preacher, directed an appeal to Prince Nawaf bin Faysal, general president for the Protection of the Youth, in which he asked him to employ all legal means to stop Saudi women from participating in the Olympic games. He stated that Prince Nawaf would not like his wife or daughter to participate, and thus he should likewise be eager to protect the reputation and virtue of his Muslim sisters. Al-'Arifi also stated that sports is a desirable thing in Islam, including for women to practice sports. In general it is permitted. However, if it leads to women mingling with men, or uncovering their nakedness, or men watching them while they are running, falling to the ground, laughing, crying, fighting with another player, riding horses, performing gymnastics, wrestling, and so forth; and if cameras are filming this is and it's being aired by stations, then there's no doubt that it is clearly forbidden (haraam). Women's participation in the worldwide Olympic games, or in foreign or domestic public tournaments, over time could leads to acceptance of her uncovering her hijab, expanding the types of clothes she wears, and also shrinking and tightening her clothes, little by little.
He added that the Kingdom of Saudi Arabia is a country which is distinguished throughout all the world and is special, for it is the Muslims' qiblah, and the birthplace of Islam and the Message. It belongs to all Muslims. They must see among us a faithful adherence to Islam, and respect for the teachings of the Shari'a.