During the hearing on Tuesday Jakob, who won 1500m gold at Tokyo 2020 and 5,000m gold at Paris 2024, detailed a series of incidents of alleged abuse.

He said as a schoolboy he could not go to parties and how, as a teenager, he was made to train two or three times a day.

Jakob also described several incidents when he said he had been assaulted by his father.

It is alleged Gjert struck Jakob several times after he received a negative report about his behaviour from school when he was aged eight.

He also said that in 2008, when Jakob was around eight years old, his father hit him in the face because he was late for a race. He described another incident a year later when he says his father kicked him in the stomach after he fell off a scooter.

He described another alleged incident in 2016 at a junior championships when his father threatened him and another episode around the same time when Gjert was said to have thrown his games console out of the window.

Gjert is expected to give evidence to the court next week. Speaking after Tuesday’s hearing, his lawyer, John Christian Elden, told NRK that Gjert had a “different perception of reality”.