How To Measure Jump Rope For Double Unders. If the rope is too short, you might have difficulty in jumping and passing the rope under your feet. Pay attention to the sound of the rope.
The handles should come up to the base of your armpit; Fitness / double unders correct sizing: Stand on the jump rope in the middle of the cord with both feet.
If it's too long, you stand.
Simply size the rope down until it is in that range. If it's too long, you stand. Practice getting just one double under. According to the mean of jump rope records, the children were divided into a superior ability group (more than average + 0.5 sd) and an inferior ability group (less than average − 0.5 sd) for each gender.