[2] After having her left armed amputated in 2009, she then competed in para taekwondo, winning the world title in 2013, a feat she would repeat in 2014, 2015 and 2017.

[2] At the 2019 World Championships, Gjessing broke her arm during the quarterfinals but nonetheless won the bronze medal.

[4] Para taekwondo made its debut there, and Gjessing won the gold medal, beating Great Britain's Beth Munro 32-14 in the final.

[5][6] She competed at the 2022 European Taekwondo Championships, winning a bronze medal in the K44 wommen's -65 kg event.

[7][8] On 1 February 2024, Gjessing announced that she would retire from para taekwondo after the 2024 Summer Paralympics in Paris.