| 摘要 |
An exercise device is provided that is useful for exercising various muscle groups of the body including the arms, shoulders, upper and lower back, abdomen, and to a certain extent the legs. The device comprises a rod that has a sliding weight. The sliding action of the weight is restricted or dampened by springs. To exercise with this device one holds the rod and causes the weight to slide back and forth along the length of the rod.
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