How I can Find The Right Exercise Ball Sizes For You
Exercise ball sizes can make a huge difference in your workout since you are using them in various positions when exercising. While smaller balls can help improving the effect of certain exercises and if you have a bad back a larger ball can provide support to your body weight, choosing the right ball depending on your height and size of the arms matters a lot.
In using your height in determining the right exercise ball sizes, the equipment should be level or slightly above the knees. The best and easiest way to measure the right exercise ball is by sitting on it. While doing this, you need to bend your knees at a 90-degree angle and your thighs should be level with the floor. Find out your height and check which size you should try first.
This simple chart will help determine the right exercise ball size depending on your height.
| Height | Recommended ball size |
| Under 4′8″ | 45 cm |
| 4′8” to 5′3” | 55 cm |
| 5′4” to 5′10 | 65 cm |
| 5′10 to 6′4 | 75cm |
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The best determination of whether the new ball is of appropriate height is on a sitting position. At an angle of 90-degrees, your hips are level or slightly higher than the knees. When the exercise ball is too small, you might compromise the position of your hips and pelvis when sitting on it. On the other hand, a ball that is too large will not provide opportunities for your feet to touch the ground, putting you in an unstable position. That’s why it is very important to get the right ball size to have the right workout.
Another way to determint the right exervise ball size is to calculate the length of your arms. Since the length of your leg may vary from that of other people, the arm span can accurately measure the right ball for you.
If the exercise ball will be used for several aerobic exercises and need to hold onto it, the arms cam also provide a better fit for your situaation. However, using this methhod might be a bit tricky (and require more time) as most people usually have more knowledge of their height than their arm span.
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If you still prefer arm span for determining the right exercise ball size for you, use this chart to help you find the right size.
| Arm Length | Recommended ball size |
| 22″ to 25-1/2″ | 55 cm |
| 26″ to 31-1/2″ | 65 cm |
| 31-3/4″ to 35-1/2″ | 75 cm |
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