urukuta rw'icyuma rutuma imiterere y'icyuma ikomera, ifatana neza kandi iramba.
Uburemere bwiyongera. Imashini nyinshi zifite amahembe abiri y'uburemere, ariko izindi zifite menshi. Buri hembe rifata imikino Olempike ya santimetero 5-7 isanzwe ya santimetero 2.
Ikora imyitozo ya biomechanical.
Ihererekanya ry'ubudahangarwa mu buryo bugufi kandi butaziguye.
Intebe zishobora guhindurwa
Amasafuriya yometseho neza n'ay'icyuma
Urufunguzo rw'icyuma rutuma inyubako ikomera cyane, ifatana neza kandi iramba.
Imikorere myiza kandi iramba cyane.
Udukoresho two gufata mu ntoki ni utwuma twa thermos rubber twoherezwa hanze tudakurura, kandi turinda kwangirika no gucika.