| 摘要 |
<p>One embodiment of the barrel exercise apparatus in accordance with the present disclosure is a curved, partial barrel shaped body that has a bottom surface shaped to rest on a portion of a planar surface such as a pad or a floor and an upper curved surface formed by a first cylindrical surface portion having a first radius of curvature about a first axis and a second cylindrical surface portion having a second radius of curvature about a second axis spaced from and parallel to the first axis. The second radius is different from the first radius of curvature. The first and second surface portions preferably tangentially merge together to form a continuous smooth, curved, upper surface with different curvatures. Another embodiment is an assembly that, in combination with the partial barrel shaped body, includes a planar base such as a non-slip mat, a removable first block shaped step block having a bottom surface shaped to rest on the base, a generally flat top surface lying at an acute angle to a plane of the bottom surface of the block shaped body when the first body is positioned on the base, and an upright front edge between the bottom surface and the top surface. The bottom surface of the partial barrel shaped body receives a locating member in a complementary shaped recess such that the barrel shaped body may be positioned in two opposite orientations on the locating member. Thus the barrel shaped body may be positioned with either the first portion or the second portion abutting the step on the base.</p> |
