The last at bat for my mom, Helen Callaghan , in the All-American Girls Professional Baseball League was in 1949. Growing up, I witnessed the birth of Title IX, the federal civil rights law signed by President Nixon in 1972. Over the next 10 years, there was a 500% increase in female participation in high school sports rising to 1,780,000 participants during the 1982-83 year, according to the National Federation of State High School Assns. Title IX attorney Linda Correia, who recently settled a discrimination case at Christopher Newport University in Virginia, agrees that significant progress has been made, but the battle over interpreting and implementing Title IX is ongoing. Yenor wants regulatory changes that would make dance, yoga and exercise classes qualify as meeting the athletic opportunity requirements of Title IX.