Dumbbells, cyangwa free weights, ni ubwoko bw'ibikoresho by'imyitozo ngororamubiri bidasaba imashini zikora imyitozo ngororamubiri. Dumbbells zikoreshwa mu gukomeza no kunoza imitsi.
Intego ya dumbbell ni ugukomeza umubiri no kunoza imitsi, hamwe no kongera ingano yayo. Abakora bodybuilders, powerlifting, n'abandi bakinnyi bakunze kuyikoresha mu myitozo yabo cyangwa mu myitozo ngororamubiri. Hakozwe imyitozo itandukanye yo gukoresha dumbbell, buri imwe igamije gukora imyitozo ngororamubiri y'itsinda runaka ry'imitsi. Nk'itsinda, imyitozo ngororamubiri ya dumbbell, iyo ikozwe neza kandi buri gihe mu myitozo ngororamubiri yuzuye, ifite ubushobozi bwo gufasha kubaka ibitugu binini, amaboko akomeye, amatako asa neza, igituza kinini, amaguru akomeye, n'inda zisobanutse neza.
Ibisobanuro: 2.5-5-7.5-10-12.5-15-17.5-20- 22.5-25-27.5-30-32.5-35-37.5-40-42.5-45-47.5-50KG