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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク World record progression 50m freestyle ： ウィキペディア英語版 World record progression 50 metres freestyle The first world record in the men's 50 metres freestyle in long course (50 metres) swimming was recognized by the International Swimming Federation (FINA) in 1976. In the short course (25 metres) swimming events the world's governing body recognizes world records since March 3, 1991. The drop in world record times in the 2008/2009 coincided with the introduction of polyurethane suits from Speedo (LZR, 50% polyurethane) in 2008 and by Arena (X-Glide), Adidas (Hydrofoil) and Italian swimming suit manufacturer Jaked (all 100% polyurethane) in 2009. FINA's ban on non-textile suit came into effect on January 2010. FINA also released a (list of approved suits ). ==Men== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「World record progression 50 metres freestyle」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.