Liukin began gymnastics when he was 7 years old. He moved to Moscow to join the Soviet Junior National team, where he made his world debut at the 1985 Friendship Cup. Coached by Eduard Yarov, Liukin was a member of the Soviet Union National Team until the 1991 dissolution of the Soviet Union.
Senior
At the 1987 European Championships in Moscow, he won gold medals in the all-around, on the horizontal bar, and in the floor exercise where he was the first gymnast to perform a triple back somersault. He won the silver medal on the still rings and the bronze on the vault. At the 1987 World Artistic Gymnastics Championships in Rotterdam, he won the team competition with the Soviet Union. At the 1988 Summer Olympics in Seoul, South Korea, Liukin won the gold medal in the team competition, and was the co-champion on the horizontal bar with fellow Soviet gymnast Vladimir Artemov. Liukin won the silver medal in the all-around and on the parallel bars. At the 1991 World Artistic Gymnastics Championships in Indianapolis, he again was a member of the champion Soviet team in the Team competition. He won the bronze medal in the All-Around. Following the dissolution of the Soviet Union, Liukin competed for his native Kazakhstan, competing for them most notably at the 1993 World Artistic Gymnastics Championships and the 1994 Asian Games, but did not win a medal at either competition.
Coaching
Liukin became internationally renowned for coaching USA's second consecutive all around Olympic champion, his daughter, Nastia Liukin, to the 2008 Summer Olympics. In addition, Nastia contributed to team USA's silver medal finish in the team competition. She also earned silver on uneven bars, silver on balance beam, and bronze in the floor exercise. Most recently, the notable gymnasts trained by Liukin include 2010 National Champion and 6-time world medalist Rebecca Bross as well as 2011 junior National champion and 2013 American Cup champion Katelyn Ohashi. Bross placed second in the all-around competition at the World Championships in London 2009 and teammate Ivana Hong placed third in the beam competition. However, Rebecca Bross and Nastia Liukin both failed to qualify for the London 2012Olympic team. This resulted in Liukin's retirement from international and senior competition. Ohashi was too young to meet the eligibility criteria to compete in the Olympics. Bross's current gymnastics career status is "undecided", although she remains a coach at her old gym. Liukin was the InternationalCoach of the Year in 2000 and 2004. He was inducted into the International Gymnastics Hall of Fame in 2005. In 2006, a gymnast who trained at Liukin's World Olympics Gymnastics Academy filed a lawsuit alleging that Liukin and co-owner Yevgeny Marchenko had failed to properly screen and supervise her coach Christopher Wagoner who, according to the gymnast, sexually assaulted her numerous times and suggested that she use cocaine for weight loss. Gymnast Katelyn Ohashi has alleged multiple times that Liukin and Marchenko's coaching style contributed to an eating disorder and deep unhappiness that ultimately lead her to retire from elite gymnastics after her injury. On 16 September 2016, he was named the coordinator for the United States women's national gymnastics team, replacing the retiring Márta Károlyi. On February 2, 2018, Liukin resigned from this role amid the USA Gymnastics sex abuse scandal.
Personal life
He married Anna Kotchneva, a 1987 World Champion rhythmic gymnast, while still competing himself. Their daughter, Nastia Liukin, was born in Moscow in 1989. In 1992, Liukin moved to the United States and began a coaching career. Liukin originally settled in New Orleans, but later moved to Plano, Texas. Liukin owns and runs three World Olympic Gymnastics Academy locations with business partner Yevgeny Marchenko. He had a small cameo in the film Stick It as the spotter in his daughter's uneven bars routine.