It is most likely a story about a Mukuzo Imokawa doing the somersault. (Source: Anime Database Wiki)
as
Director, Key Animation
Oira no Ski
Dekobou Shingachou: Meian no Shippai
Umi no Momotarou
Osaru no Tairyou
Taa-chan no Kaitei Ryokou
Chikara to Onna no Yo no Naka
Baguda-jou no Touzoku
Issunboushi
Sora no Momotarou
Neko to Nezumi
Kachikachi Yama no Shouboutai
Ari to Hato
Norakuro Nitouhei: Enshuu no Maki
Da Nao Hua Shi
Kachikachi Yama (1940)