Gymnast Mattie Larson said she purposely hurt herself to avoid Larry Nassar

Former gymnast Mattie Larson was so desperate to avoid Larry Nassar, the USA Gymnastics physician who pleaded guilty to sexually assaulting multiple women, she tried to give herself a concussion so she wouldn't have to see him. 

During her testimony at the sentencing hearing for Nassar on Tuesday, Larson detailed her horrific experiences with the physician at Karolyi Ranch in Texas, which was used as an Olympic training site. Overall, more than 100 women have accused Nassar of sexual assault. 

SEE ALSO: Olympian Simone Biles also accuses USA Gymnastics doctor of sexual abuse

"I was willing to physically hurt myself to get out of the abuse I received at that ranch," she said. 

"I was taking a bath when I decided to splash water on the floor and bang my head as hard as I could on the tub so it looked like I slipped," Larson, now 25, said. "I thought injuring myself was the only way I could get out of going to camp."

Larson said Nassar began abusing her at her first U.S. National Championships, when she was 14 years old. She wasn't able to compete because of a painful hip injury, which is when Nassar first took advantage of her. 

"My injury was very close to my pelvic bone, so when Larry put his fingers in my vagina for the first time, I thought it was some internal treatment," Larson said. 

Larson said he molested her until she retired from the elite team at 19. During her testimony, she recounted how during one training camp at Karolyi ranch, she injured both ankles. Instead of treating her injuries, Nassar continued to abuse her. 

Larson said in the past she trusted Nassar, and that he was one of the few kind adults in her life. During her testimony, she addressed him directly: "Your kindness was simply a ploy to molest me every chance you got. I can't even put into words how much I fucking hate you." 

The abuse she endured at Karolyi Ranch wasn't just physical — after she "cost the team the gold medal" at the 2010 World Championships in the Netherlands, Larson said she was shunned by Karolyi staff. 

The camp's remote location, forced training with few breaks for food or rest, and staff that Larson said were "careless and neglectful" contributed to her eating disorder. 

"I've never felt so small and disposable in my life," she said. 

SEE ALSO: Olympian Simone Biles also accuses USA Gymnastics doctor of sexual abuse

Larson was the floor exercise national champion in 2010. She won a silver medal with the U.S. team at the World Championships later that year. Fellow teammate Aly Raisman offered her support on Twitter, and reminded Larson that "USAG has forever manipulated us to feel guilty and worthless when we don't win gold medals."

Larson, along with other gymnasts who were abused by Nassar, have been lobbying Congress for a bill that would require amateur athletic organizations to report sexual abuse. The bill passed in the Senate but has yet to go through the House.

Watch Mattie Larson's full testimony here: 

USA Gymnastics recently began addressing the abuse its staff imposed on young gymnasts, including cutting ties with Karolyi Ranch. On Monday, three USA Gymnastics board members resigned.