Assumption of Risk, Where Art Thou?

One of the major lessons we learn growing up is understanding the concept of risk, that is, the possibility of getting hurt. Different activities have more or less risk as it concerns our physical safety. When we join a gym, our assumption of risk is explicit in the form of a written and signed waiver. This protects the gym from being sued when we injure ourselves. Does this concept have any place in the current discussion on sexual harassment and sexual assault?