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The BJJ Story
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Marit Tyssedal Gabrielsen

Frontline Voss instructor whose journey from army officer to black belt includes European medals, World Master bronze and a 2024 promotion in Rio.

Biography

Marit Tyssedal Gabrielsen is a black belt and assistant instructor at Frontline Academy Voss. Her competition career includes European medals in gi and no-gi and a World Master bronze, earned as she progressed through the colored belts. In a September 2020 Faixa Preta interview, she described her earlier life as a weightlifter and second lieutenant in the Norwegian army. She had lost interest in weightlifting when Jason Shields invited her to try jiu-jitsu. She enjoyed the first class, left the army and returned to Voss to pursue the sport. Work at Voss Chiropractic and sponsorships made competition travel possible. Shields had founded Frontline Academy Voss in 2012. For her first European competition, she recalled following the game plan he gave her to a bronze medal, crediting Voss's competitive training culture. The official IBJJF results place her third in the women's adult white-belt lightweight division at the 2016 Europeans and again in 2017, representing Frontline Academy. By the 2017 Copenhagen Open she was competing at blue belt, taking first in women's adult lightweight in no-gi and third in the gi event, where athletes wear the traditional training uniform. European no-gi bronze followed in the same age, belt and weight category in 2018. In the 2020 interview, she recalled difficult periods at blue belt and renewed confidence at that year's Europeans. Shields also helped with mental preparation. At the 2020 Europeans, she took bronze in the women's Master 1 purple-belt lightweight division. Describing her game that year, she favored closed guard, half guard and pressure passing: controlling opponents with her legs or working past theirs through close pressure. She was working to join positions without leaving gaps between them. When pandemic closures stopped regular classes, she maintained daily exercise and sleep routines, using weightlifting and wrestling movements. In 2022, she reached the podium at the World Master Championship, taking bronze in women's Master 1 purple-belt lightweight for Frontline Academy. Her black belt came in 2024, in Rio de Janeiro, from Jason Shields and Ricardo Libório. Fellow Voss instructor Rutger Custers traveled to Brazil with her and Shields and received his black belt alongside her. Away from competition, she also held a business leadership role. A December 2024 Brainz Magazine introduction to Shields described her as the CEO in their business team. Sponsored coverage produced by Schibsted Partnerstudio identified her as managing director of The Integrated Human. Her account of private training with Rose, published as a testimonial by Jiu Jitsu Queenz, emphasizes technical instruction alongside mental and emotional work, in an atmosphere she enjoyed. At Frontline Voss, where she serves as an assistant instructor, the academy describes her own teaching emphasis as principles and drilling: learning the ideas behind the techniques and practicing the movements repeatedly.

Sources for this profile

  • Frontline Academy Voss, club website front page, instructor section.(opens in a new tab)

    • In her teaching she puts much of the emphasis on principles and drilling.

      Where in the source: Her instructor bio, second paragraph, first sentence — «prinsipp og drilling».

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    • Marit Tyssedal Gabrielsen is an assistant instructor at Frontline Academy Voss.

      Where in the source: Instructor section, role heading directly above her name — «Hjelpeinstruktør».

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    • Her first competition brought a European white-belt bronze medal.

      Where in the source: Her instructor biography, second sentence, first competition and bronze medal.

      Accessed:

    • According to the club, she has since competed extensively and holds medals from the European Championships in gi and no-gi and from the World Master Championship.

      Where in the source: Her instructor bio, third sentence — «konkurrert mye».

      Accessed:

    • In 2024 she was promoted to black belt by Jason Shields and Ricardo Libório in Rio de Janeiro.

      Where in the source: Her instructor bio, second paragraph, last sentence — «dekorert svartbelt».

      Accessed:

    • Fellow instructor Rutger Custers travelled to Brazil with Jason Shields and Marit in 2024, and he and Marit received their black belts there together.

      Where in the source: Rutger Custers's instructor bio, second paragraph — «reiste han til Brasil».

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    • Frontline Academy Voss was founded in 2012 by its head instructor Jason Shields, a black belt under Ricardo Libório and Eduardo «Teta» Rios.

      Where in the source: Head instructor Jason Shields's bio, second paragraph — «I 2012 grunnla han».

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  • IBJJF, official results: European IBJJF Jiu-Jitsu Championship 2016.(opens in a new tab)

    • At the 2016 European IBJJF Jiu-Jitsu Championship she placed third (one of two bronze medallists) in the female adult white-belt light division (61.50 kg), competing for Frontline Academy.

      Where in the source: Results list, category «Female / Adult / White / Light (61.50kg)», place 3 row with her name.

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  • IBJJF, official results: European IBJJF Jiu-Jitsu Championship 2017.(opens in a new tab)

    • At the 2017 European IBJJF Jiu-Jitsu Championship she again placed third in the female adult white-belt light division (64.00 kg), competing for Frontline Academy.

      Where in the source: Results list, category «Female / Adult / White / Light (64.00kg)», place 3 row with her name.

      Accessed:

  • IBJJF, official results: Copenhagen International Open IBJJF Jiu-Jitsu No-Gi Championship 2017.(opens in a new tab)

    • At the 2017 Copenhagen International Open IBJJF Jiu-Jitsu No-Gi Championship she won the female adult blue-belt light division (61.50 kg), competing for Frontline Academy.

      Where in the source: Results list, category «Female / Adult / Blue / Light (61.50kg)», place 1 row with her name.

      Accessed:

  • IBJJF, official results: Copenhagen International Open IBJJF Jiu-Jitsu Championship 2017.(opens in a new tab)

    • At the 2017 Copenhagen International Open IBJJF Jiu-Jitsu Championship (gi) she placed third in the female adult blue-belt light division (64.00 kg), competing for Frontline Academy.

      Where in the source: Results list, category «Female / Adult / Blue / Light (64.00kg)», place 3 row with her name.

      Accessed:

  • IBJJF, official results: European IBJJF Jiu-Jitsu No-Gi Championship 2018.(opens in a new tab)

    • At the 2018 European IBJJF Jiu-Jitsu No-Gi Championship she placed third in the female adult blue-belt light division (61.50 kg), competing for Frontline Academy.

      Where in the source: Results list, category «Female / Adult / Blue / Light (61.50kg)», place 3 row with her name.

      Accessed:

  • IBJJF, official results: European IBJJF Jiu-Jitsu Championship 2020.(opens in a new tab)

    • At the 2020 European IBJJF Jiu-Jitsu Championship she placed third in the female Master 1 purple-belt light division (64.00 kg), competing for Frontline Academy.

      Where in the source: Results list, category «Female / Master 1 / Purple / Light (64.00kg)», place 3 row with her name.

      Accessed:

  • IBJJF, official results: World Master IBJJF Jiu-Jitsu Championship 2022.(opens in a new tab)

    • At the 2022 World Master IBJJF Jiu-Jitsu Championship she placed third in the female Master 1 purple-belt light division (141.60 lb), competing for Frontline Academy.

      Where in the source: Results list, category «Female / Master 1 / Purple / Light (141.60lb)», place 3 row with her name.

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  • Mariah Carvalho, Marit Tyssedal interview, Faixa Preta digital magazine, September 2020, pp. 34–37; publisher upload dated 16 September 2020.(opens in a new tab)

    • Before concentrating on BJJ, she had been a weightlifter and a second lieutenant in the Norwegian army.

      Where in the source: Page 35, opening biographical paragraph.

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    • She recalled losing interest in weightlifting before Jason Shields personally encouraged her to try BJJ; she immediately enjoyed the first class.

      Where in the source: Page 35, first question and answer.

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    • She left the army and returned to Voss to pursue jiu-jitsu. Work at Voss Chiropractic and sponsorships enabled competition travel.

      Where in the source: Pages 35–36, introductory biography and question about financial impact.

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    • For her first European competition, Shields supplied a game plan that she followed to bronze; she credited the competitive culture in Voss.

      Where in the source: Page 36, opening question about first competition.

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    • In 2020 she favoured closed guard, half guard and pressure passing, working to connect positions and eliminate gaps in transitions.

      Where in the source: Page 36, question about preferred game.

      Accessed:

    • She described difficult periods at blue belt and renewed confidence at the 2020 Europeans; Shields also helped her with mental preparation.

      Where in the source: Page 36, questions about memorable championships and preparation.

      Accessed:

    • During pandemic closures she maintained daily exercise and sleep routines, using lifting and wrestling movements when regular jiu-jitsu classes stopped.

      Where in the source: Page 37, pandemic question.

      Accessed:

  • Brainz Magazine, weekly issue 23–30 December 2024, podcast introduction.(opens in a new tab)

    • A December 2024 Brainz Magazine introduction to Jason Shields presented Gabrielsen as the CEO in their business team and a former Norwegian military second lieutenant.

      Where in the source: Brainz podcast section headed With Jason Shields, paragraph naming Gabrielsen.

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  • Schibsted Partnerstudio, Ønsker du en endring i livet?, advertiser content on Bergens Tidende.(opens in a new tab)

    • Schibsted Partnerstudio promotional coverage identifies her as managing director of The Integrated Human, pictured with Jason and Siv Shields.

      Where in the source: Group photograph and caption following the introductory Jason Shields quotation.

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  • Jiu Jitsu Queenz, Coaching, testimonial signed Marit Tyssedal Gabrielsen.(opens in a new tab)

    • In a testimonial published by Jiu Jitsu Queenz, Gabrielsen praises private training with Rose for combining technical instruction with mental and emotional work and an enjoyable atmosphere.

      Where in the source: Reviews section, testimonial immediately above her full-name signature.

      Accessed: