| 摘要 |
An exercise apparatus includes a resilient ball, a flexible strap assembly, and a resistance member coupled to the resilient ball via the flexible strap assembly. The resilient ball is configured such that a user rests a portion of his or her body on the resilient ball while pulling the resistance member in an elongation direction. The strap assembly includes first and second straps adapted to surround and couple to the resilient ball. A loop formed from one of the straps receives the resistance member.
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