| 摘要 |
<p>An exercise device (1) comprising a base (2), a support (4) for the axle (51) of a wheel (52) of a cycle (53), which wheel (52) being drivable by manual exertion, a roller (26, 27), bodies (33) for mounting the roller with respect to the support, holding means (21, 22, 23, 24) for locating said bodies (33) in selected rotated positions about a centre and for holding said bodies against rotation, axle means (28, 29) extending between said bodies (33) and the roller (26, 27), said-axle means (28, 29) being eccentric with respect to said centre whereby locating said bodies (33), by said holding means (21, 22, 23, 24) in selected rotated positions will position said roller (26, 27) at selected distances from said support whereby frictional resistance against turning imparted to the wheel (52) by said roller (26, 27) may be selectably varied.</p> |
