Abstract
Youth fitness of Formosa's and Japanese boys and girls were tested by professor Liu and his assistants from April to June, 1959. The subjects of Formosa and the Takasago tribe were 1,449 and 169 respectively. The differences of youth fitness between Japanese and theirs show in the following table.[table] As Hans Kraus reported, we shall have to second his opinion that human being can not maintain the suitable motor ability for his social life without the big muscle activities sufficiently.