Ukrainian cyclist, known for his achievements in Para cycling, has a rich history in the sport. He first got on a bike at age two and began competing at age 10. His parents encouraged him to engage in sports for physical development. His father, Viktor Dementyev, an Honoured Coach of Ukraine in cycling, has been a significant influence.

| Season | Event | Rank |
|---|---|---|
| 2016 | C5 Individual Time Trial | G Gold |
| 2012 | C4-5 Road Race | G Gold |
| 2012 | C5 Individual Time Trial | G Gold |
| 2020 | C4-5 Road Race | S Silver |
| 2020 | C5 Individual Time Trial | S Silver |
| 2016 | C4-5 Road Race | DSQ |
| 2016 | C5 4000m Individual Pursuit | G Gold |
| 2020 | C5 4000m Individual Pursuit | B Bronze |
| 2012 | C5 4000m Individual Pursuit | 4 |
| 2020 | C4-5 1000m Time Trial | 7 |
| 2012 | C4-5 1000m Time Trial | 8 |
| 2016 | C4-5 1000m Time Trial | 10 |
Despite the injury, he made a remarkable comeback. At the 2012 Paralympic Games in London, he won Ukraine's first cycling medal by securing gold in the men's C5 time trial. This victory is one of his most memorable moments. As of the 2020 Games, he has won all seven of Ukraine's Paralympic medals in cycling.
In recognition of his achievements at the 2020 Paralympic Games in Tokyo, he received the Order of Merit [first class] from the president of Ukraine. Additionally, he has been honoured with the title of Honoured Master of Sport in Ukraine.
He holds a degree in Information Technology from Kremenchuk University of Economics, Information Technology and Management in Ukraine. He speaks English, Italian, Russian, and Ukrainian. His family includes his wife Natalia Dementyeva and their daughter Maria, born in 2013. Outside of cycling, he enjoys spending time with his family and motorsport.
Looking ahead, he aims to compete at the 2024 Paralympic Games in Paris. His goal is to win gold in the road race at the world championships. With his track record and determination, these ambitions seem well within reach.
His personal coach is Gennady Ivanyan. The support from his coach and family has been crucial throughout his career. His father Viktor remains a significant influence on his journey.
He looks up to Italian road cyclist Marco Pantani as his hero. This admiration has likely shaped his approach to the sport and his competitive spirit.
His journey from early beginnings to Paralympic success showcases his resilience and dedication to cycling. With future goals set on Paris 2024, he continues to be a prominent figure in Ukrainian sports.
Ukrainian cyclist, known for his achievements in Para cycling, has a rich history in the sport. He first got on a bike at age two and began competing at age 10. His parents encouraged him to engage in sports for physical development. His father, Viktor Dementyev, an Honoured Coach of Ukraine in cycling, has been a significant influence.