Adlerteg was born on 6 June 1995 in Västerås.[1] She began gymnastics when she was three years old, with her mother being her first coach.[2] When she began high school, she moved to Eskilstuna to switch coaches because she was frequently fighting with her mother as a coach.[3]
Adlerteg made her senior international debut at the Cottbus World Cup, but she did not advance into any event finals.[9] She competed at the European Championships in Berlin. She qualified for the all-around final in 16th place alongside Veronica Wagner, marking the first time two Swedish female gymnasts qualified for the all-around final at a European Championships.[10] Adlerteg finished 23rd in the final with a total score of 49.500.[11] She then won the silver medal in the all-around at the Swedish Championships, behind Wagner.[12] At the Ghent World Challenge Cup, she finished fourth on uneven bars and sixth on floor exercise.[13]
Adlerteg finished 64th in the all-around qualification for the World Championships in Tokyo with a score of 51.966.[14] After the World Championships, she competed at the 2011 Northern European Championships, and she helped the Swedish team won the gold medal ahead of Wales and Iceland. Individually, she won the gold medal on the uneven bars and tied for the bronze medal on the balance beam.[15] In November, she was selected to compete at the 2012 Olympic Test Event.[16]
Adlerteg won a silver medal on the uneven bars at the 2013 European Championships, behind Aliya Mustafina. It was Sweden's first European medal in women's gymnastics in over 50 years.[24] She then won the all-around title at the Swedish Championships.[25] She chose to withdraw from the World Championships after having an allergic reaction a few weeks before the competition along with other health issues.[26]
2014
Adlerteg competed as a guest at the Belgian Championships and won gold in the all-around.[27] She then defended her Swedish all-around title.[28] She then finished seventh on the uneven bars at the Osijek World Challenge Cup.[29] She was the first reserve for the uneven bars final at the European Championships.[30] She competed at the Romanian Championships as a guest, where she finished fourth in the all-around.[31] She helped the Swedish team finish fourth at the Novara Cup and had the highest score of the competition on the uneven bars.[32] Then at the World Championships, Adlerteg helped the Swedish gymnastics team finish 21st and qualify for the 2015 World Championships.[33]
2015–2017
Adlerteg started the 2015 season at the Cottbus World Challenge Cup and won the gold medal in the uneven bars final. This was also her first World Cup medal.[34] She then won the silver medal on the uneven bars at the Ljubljana World Challenge Cup.[35] At the 2015 European Championships, she qualified for the all-around final, but she fell off the uneven bars and did not advance to the event final.[36] During the all-around final, she tore her ACL on the floor exercise and had to withdraw from the competition.[37][38]
Adlerteg returned to competition in 2016 and won the gold medal on the uneven bars at the Doha World Challenge Cup.[39] Despite winning the gold medal, she ruptured a meniscus on the landing of her dismount, and this injury kept her out of the 2016 Olympics.[40] She returned to competition at the 2017 Szombathely World Challenge Cup and won the gold medal on the uneven bars.[41] She then competed on the uneven bars at the World Championships but did not advance into the final.[42]
2018
Adlerteg began the season at the Nordic Championships and helped the Swedish team win the silver medal, behind Norway.[43] Even though she fell in the uneven bars event final, she still won the gold medal.[44] She then competed at her first Swedish Championships since 2014 and won a gold medal on the uneven bars.[45] At the European Championships, she won her second European silver medal on the uneven bars.[46] She then won the uneven bars gold medal at the Szombathely World Challenge Cup and the silver medal at the Paris World Challenge Cup.[47][48] She qualified for the uneven bars final at the World Championships, becoming the first Swedish female gymnast to qualify for a World Championship event final since 1958.[49] She fell in the final and finished in eighth place.[50]
2019
Adlerteg made her season debut at the Melbourne World Cup, where she finished fourth on the uneven bars.[51] She then finished fifth at the Baku World Cup and fourth at the Doha World Cup.[52][53] She qualified for the uneven bars final at the European Championships and finished fifth.[54] At the Swedish Championships, she competed in the all-around for the first time in four years, and she won the all-around bronze medal.[55] In the event finals, she won the gold medals on the uneven bars and the balance beam.[56] She then competed at the Heerenveen Friendly and finished 11th in the all-around,[57] and she finished 19th in the all-around at the Worms Friendly.[58] At the World Championships, she fell off the uneven bars during the qualification round.[59] She ultimately finished 75th in the all-around and earned a berth for the 2020 Olympic Games.[60][61][62]
2020–2021
Due to the COVID-19 pandemic, Adlerteg's only competition in 2020 was the Swedish Championships. She only competed on the uneven bars and won the gold medal.[63]
Adlerteg announced her retirement from gymnastics on 28 April 2022.[68]
Post-gymnastics
In the fall of 2020, Adlerteg began studying at Örebro University in the biomedical analyst program.[69][70] Adlerteg was a commentator for the 2022 Swedish Gymnastics Championships.[71] She appeared on the 2023 season of the Swedish reality competition show Mästarnas mästare.[72]
^Turner, Amanda (10 June 2012). "Qualification Leaders Repeat in Ghent". International Gymnast Magazine Online. International Gymnast Magazine. Archived from the original on 18 October 2014. Retrieved 13 October 2014.
^Östberg, Fredrik (29 March 2016). "Världscupsegraren missar OS" [The World Cup winner misses the Olympics]. SVT Sport (in Swedish). Retrieved 2 October 2024.
^"Jonna Adlerteg siktar på OS-final" [Jonna Adlerteg is aiming for the Olympic final]. Institutet för biomedicinsk laboratorievetenskap (in Swedish). 14 June 2021. Retrieved 1 October 2024.