Boo Kullberg graduated from the Central Institute of Gymnastics in 1912 as the only civilian in his year. He was a gymnast and gymnastics leader at the KFUM, the Swedish branch of the YMCA. At the 1912 Olympic Games, he was a member of the Swedish team that won gold in the team all-around in the Swedish system. While entered in sabre fencing, but did not start. Kullberg wrote two books on gymnastics including Tio minuters morgongymnastik: för bibehållande av vigör och spänstighet (Ten Minutes Morning Gymnastics: for Maintaining Vigor and Elasticity), which was published in 1913 and later translated into German.
In 1913, the president of the Portuguese Olympic Committee, Jaime Mauperrin dos Santos, wrote a letter to obtain information on a Swedish gymnast who could introduce Swedish gymnastics and sports in Portugal. The recently graduated gymnastics director Kullberg, was selected to go to Lisboa (Lisbon) for a period of three years to teach at the École Academique to lead the sports exercises of its students. He stayed, however, for several decades in Portugal, got married there and had children. He is still mentioned as a gymnastics director in Lisboa in the 1930s.
Sweden