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Energy Return System : ウィキペディア英語版 | Energy Return System
Energy Return System (E.R.S.) is a technology created by Reebok where a series of cylinders composed of the plastic DuPont Hytrel are placed under the midsole of an athletic shoe. The system was introduced in 1988 to compete with Nike Air, and was gradually phased out of production upon the arrival of Reebok’s Hexalite cushioning.〔http://counterkicks.com/2009/11/12/exclusive-look-reeboks-ers-hexalite-technology-systems/〕 Reebok claims that the cylinders act as springs, releasing energy after a foot strikes. ==See also==
* Nike Shox, similar system from Nike. * Reebok Pump
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「Energy Return System」の詳細全文を読む
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