He won a gold medal at the 2023 Asian Weightlifting Championships held at JinJu, South Korea.

He also won the bronze medal in the men's 73 kg event at the 2020 Asian Weightlifting Championships held in Tashkent, Uzbekistan.

[3] In 2018, he competed in the men's 69 kg event at the Asian Games held in Jakarta, Indonesia.

[4] In August 2024, Miyamoto competed in the men's 73 kg event at the 2024 Summer Olympics held in Paris, France.

This biographical article relating to weightlifting in Japan is a stub.