| 摘要 |
<p>A skipping rope (10) includes a weighted elastic cord (12; 50; 36) joining two handles (22; 52; 40). In use, the cord stretches, producing a variable moment arm about the handles. The cord may either be solid (50) or it may be in the form of a hollow tube (12) containing a granular weighting material (14). </p> |
