Her father, Mikhail Alexandrovich, was a member of the Soviet Army and was one of the first Chernobyl liquidators, and her mother, Irina Nikolaevna, was a teacher.

[5] She briefly quit gymnastics after being diagnosed with a congenital heart defect, but this diagnosis was refuted by another doctor, and she returned to training.

[4] There, she led her team to the gold medal and earned individual silvers in the all-around and vault finals and a bronze on the balance beam.

[12][13][14] Zamolodchikova was selected as a member of the Russian gymnastics team at the 2000 Summer Olympics in Sydney alongside Svetlana Khorkina, Yekaterina Lobaznyuk, Elena Produnova, Anastasiya Kolesnikova, and Anna Chepeleva.

[15] In the team final, several major mistakes, including Zamolodchikova's fall off the balance beam, cost them the gold medal, and they won silver behind Romania.

[5] After the Olympic Games, Zamolodchikova competed at the World Cup final and won gold on the vault and silver on the floor exercise.

[20] Then at the Stuttgart World Cup, she won gold on vault, balance beam, and floor exercise, and she tied with Jana Komrsková for silver on uneven bars.

[22] Then at the Paris World Cup, she won gold on vault and floor exerciser and silver on balance beam behind Sun Xiaojiao.

[23] She won another vault gold medal at the Cottbus World Cup in addition to a silver on uneven bars behind teammate Svetlana Khorkina.

[27] She injured her foot during the qualification round of the World Championships, but she still received the silver medal the Russian team won.

[31] She was a member of the Russian team that won gold at the European Championships, and she finished fourth in the vault final.

[33] At the 2002 World Cup Final, she tied for the gold medal on vault with Oksana Chusovitina, and she won silver on balance beam behind Sun Xiaojiao.

[38][39] At the World Championships, the Russian team only finished sixth, but Zamolodchikova won the silver medal on vault.

[41] She was then selected to represent Russia at the 2004 Summer Olympics alongside Pavlova, Ludmila Ezhova, Svetlana Khorkina, Maria Kryuchkova, and Natalia Ziganshina.

[55] Zamolodchikova made her last competitive appearance at the 2009 Summer Universiade in Belgrade where she helped the Russian team win the silver medal.

[56] She graduated from Lesgaft National State University of Physical Education, Sport and Health with a coaching degree.