Participation in women’s college sports will now be restricted to athletes who were assigned female at birth, as per a revised policy from the NCAA’s Board of Governors announced on Thursday.

The new guidelines do not restrict participation in men’s sports based on an athlete’s birth or gender identity, as long as all other NCAA eligibility criteria are satisfied, the NCAA stated.

Athletes assigned male at birth are allowed to practice with women’s teams and can access resources like medical care, according to the NCAA. This policy is effective immediately and applies to all student-athletes, overriding previous eligibility assessments under the NCAA’s earlier transgender participation regulations.

The update comes just a day after the Trump administration issued an executive order prohibiting transgender women and girls from competing in women’s sports and instructing agencies to withdraw federal funding from educational institutions that do not comply.

“The NCAA is made up of 1,100 colleges and universities across all 50 states, collectively serving over 530,000 student-athletes,” NCAA President Charlie Baker remarked in a statement. “We believe it is essential to have clear and uniform eligibility standards to support today’s student-athletes, rather than a confusing mix of state laws and court decisions. President Trump’s order establishes a straightforward, national benchmark.”

The policy states that any student-athlete assigned female at birth who begins hormone therapy will not be allowed to compete on women’s teams. If such an athlete participates in any NCAA competition, the team will forfeit its eligibility for NCAA women’s championships.

“The NCAA allows individual institutions the freedom to decide on athletics participation locally,” the organization noted, while emphasizing that all schools must adhere to local, state, and federal laws that take precedence over NCAA regulations.

Sports that feature mixed teams, like rifle shooting, are not affected by the new policy.

The Board of Governors has instructed staff to assist member institutions in promoting respectful and inclusive athletic environments, according to the NCAA announcement.

“This revised policy, along with additional resources, reinforces the NCAA’s commitment to fostering intercollegiate athletic competition while also prioritizing the mental and physical health of student-athletes,” Baker said in his statement. “This national standard provides important clarity as we adapt college sports for the current generation of student-athletes.”