Belt tension exerciser
作者： Ronald J. Reda
DOI:
关键词:
摘要: A belt tension exerciser is provided with a rigid transverse handle which longitudinally connected to an elastic band or form closed loop. The effective diameter of the loop measured in direction exercising force may be changed thereby adjust expansion belt. turned on its axis relative permit variety exercise movements without adjusting one's grip.
lens.org 参考文章(5)
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Henry E Wildermuth, Vertebrae manipulating and massaging device ,(1940)
Gerald E Kane, Elastic type exerciser with elastically held hand grip assembly ,(1970)