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Miura is a Japanese alpinist who in 2003, at age 70, became the oldest person to reach the summit of Mount Everest. This record was later broken by himself. Miura had two heart surgeries for cardiac arrhythmia, in 2006 and 2007. On May 23, 2013 Miura again became the oldest person to climb to the summit of Mount Everest at the age of 80. This achievement is listed in the Guinness Book of Records. He was unable to make the descent after reaching the top, and was airlifted from Advanced Base Camp at 6500 meters, not walking down to the Base Camp at 5364 metre (17,600 feet). Famous alpinists, like Ken Noguchi, question Miura's achievement and say that you can't call a climb “complete” unless you walk all the way down the mountain, too.
He also became the first person to ski on Mount Everest on May 6, 1970. He descended nearly 4,200 vertical feet from the South Col (elevation over 8,000 m (26,000 ft)). This feat was documented in 1975, in the film The Man Who Skied Down Everest. The film won the Academy Award for best documentary, the first sports film to do so.
He challenged on speedsking and downhill skiing, at the time of the ski competition competing for the average speed in the 100 meter section of the steep slope downhill, the world's highest record was established in Italy on July 1964. He challenge also skiing, who success on ski downhill at seven highest peak on continent, during 1978 to 1985.[page needed]
Keizo Miura, Japanese skier, was his father. Gota Miura, freestyle skier and alpinist, is one of his sons. Yuichiro was exposed to snow sports from the time he was a child, and placed in his first skiing competition during his 2nd grade year in elementary school. He moved south with his family but found that he missed the snow and winter sports, prompting him to enroll in Hokkaido University. There, he continued to pursue skiing as a professional sport. His advanced ability to ski, especially in the back-country, required him to reach higher elevations by hiking, expanding the breadth of his skills to include mountain climbing. Once he became a prolific mountain climber, Yuichiro began challenging larger mountains, and skied down many of them.
Miura describes his diet as "healthy eating and organic food. He starts every day with a breakfast consisting of cooked rice, fermented soya bean, miso soup, eggs and fish. Once a week he will treat himself to a 500g (18oz) steak." He said that he trained outdoors with 5kg on each leg and 30kg on his back for 5.5 mile walks, and also used a low oxygen room.
-  Press release from Miura Dolphins
-  Guinness Book of Records
- "The Oldest Man and Woman to Climb Mount Everest are Both Japanese - Kuma Language Services". 2016-04-22. Retrieved 2016-08-10.
-  Meet Yuichiro Miura, the man planning to conquer Everest at 90
- The Godfather of Extreme Skiing by Paul J. MacArthur http://www.smithsonianmag.com/history-archaeology/The-Godfather-of-Extreme-Skiing.html
- Team Miura's website (Japanese and English)
- "Japanese skier Miura reaches summit of Mt. Everest at age 75". Mainichi Shimbun. May 26, 2008. Archived from the original on 2008-05-27. Retrieved 2008-05-26.
- Team Miura press release of May 26 2008 Summit
- The Telegraph - Meet Yuichiro Miura, the man planning to conquer Everest at 90