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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 Isometric exercise ： ウィキペディア英語版 Isometric exercise Isometric exercise or isometrics are a type of strength training in which the joint angle and muscle length do not change during contraction (compared to concentric or eccentric contractions, called dynamic/isotonic movements). Isometrics are done in static positions, rather than being dynamic through a range of motion. ==Overcoming versus yielding== In an overcoming isometric, the joint and muscle work against an immovable object. In contrast, in a yielding isometric, the joint and muscle are held in a static position while opposed by resistance. In the context of the bench press, an example of a yielding isometric would be holding the bar at a given place even though it could be pressed higher, and an overcoming isometric would be pressing the bar up into the safety guards of a squat cage that prevent pushing the bar any higher. The distinction is that in a yielding isometric, one is pressing roughly the exact amount of pressure needed to negate the resistance, neither dropping or lifting it. Whereas in an overcoming isometric, one can be exerting more force and simply unable to move it. The yielding wavers slightly into concentric and eccentric actions due to inexact control, whereas the overcoming isometric is more purely isometric and can involve more variation in the force used, since one can press harder without the bar moving. 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「Isometric exercise」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.