WELLINGTON — Weightlifter Laurel Hubbard will become the first transgender athlete to compete at the Olympics after being selected by New Zealand for the women's event at the Tokyo Games, a decision set to test the ideal of fair competition in sport.

Hubbard will compete in the super-heavyweight 87kg category, her selection made possible by updated qualifying requirements.

The 43-year-old had competed in men's weightlifting competitions before transitioning in 2013.

"I am grateful and humbled by the kindness and support that has been given to me by so many New Zealanders,” Hubbard said in a statement issued by the New Zealand Olympic Committee (NZOC) on Monday (June 21).

Hubbard has been eligible to compete at Olympics since 2015, when the International Olympic Committee issued guidelines allowing any transgender athlete to compete as a woman provided their testosterone levels are below 10 nanomoles per litre for at least 12 months before their first competition.

Some scientists have said the guidelines do little to mitigate the biological advantages of those who have gone through puberty as males, including bone and muscle density.

Advocates for transgender inclusion argue the process of transition decreases that advantage considerably and that physical differences between athletes mean there is never a truly level playing field.

NZOC chief executive officer Kereyn Smith said Ms Hubbard met IOC and the International Weightlifting Federation's selection criteria.

"We acknowledge that gender identity in sport is a highly sensitive and complex issue requiring a balance between human rights and fairness on the field of play," she said.

"As the New Zealand Team, we have a strong culture of... inclusion and respect for all."

Save Women’s Sport Australasia, an advocacy group for women athletes, criticised Hubbard's selection.

"It is flawed policy from the IOC that has allowed the selection of a 43-year-old biological male who identifies as a woman to compete in the female category," the group said in a statement.

Weightlifting has been at the centre of the debate over the fairness of transgender athletes competing against women, and Hubbard's presence in Tokyo could prove divisive.

Her gold medal wins at the 2019 Pacific Games in Samoa, where she topped the podium ahead of Samoa's Commonwealth Games champion Feagaiga Stowers, triggered outrage in the host nation.

Samoa's weightlifting boss said Hubbard's selection for Tokyo would be like letting athletes "dope" and feared it could cost the small Pacific nation a medal.

Belgian weightlifter Anna Vanbellinghen said last month allowing Hubbard to compete at Tokyo was unfair for women and "like a bad joke".

Australia's weightlifting federation sought to block Hubbard from competing at the 2018 Commonwealth Games on the Gold Coast but organisers rejected the move.

Hubbard was forced to withdraw after injuring herself during competition, and thought her career was over.

"When I broke my arm at the Commonwealth Games three years ago, I was advised that my sporting career had likely reached its end," said Hubbard on Monday, thanking New Zealanders.

"But your support, your encouragement, and your aroha (love)carried me through the darkness."

Olympic Weightlifting New Zealand President Richie Patterson said Hubbard had "grit and perseverance" to return from injury and rebuild her confidence.

"We look forward to supporting her in her final preparations towards Tokyo," he said. REUTERS