OCR Text |
Show STRENGTH AT VARIOUS AGES. Muscles Have Their Stages of Development De-velopment and Decline. Careful Inv est Igal ions havo proved that the muscles as well as other organs of the bod), have their stages of development and decline Tests of the stieugth or several thousands or people have been made by the uso or a dynamomcti (strength measure), and the following are given as tho average figures of the white race The lilting povvot of a joutli of 17 Is 2801b In Ids twentieth year this ln-eieis"s ln-eieis"s to .1201b, and In his thirtieth and thlrty-llrst jours It reaches Its height, .15GII). At the end of the thirty-first year the strength begins to decline Hy the foitleth ear It lias decreased 81b , and this diminution diminu-tion continues at a slightly increasing rate until the fiftieth year Is reached, when the figure Is 33011) Arter this period the stieagth rails more and more rapidly |