Tips and Trick on How to Find The Right Exercise Ball Sizes For You
A small difference in exercise ball sizes can make a huge difference in your your workout because during exercise you are using them in various positions. While smaller balls can help improving the effects of certain exercises and larger balls provides support to your body weight especially if you have a bad back, it will matters a lot to choose the right ball depends on your personal height and size of arm.
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 that you should be trying first.
The following simple chart will help you to find 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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Sitting position is the best to determine whether the new ball is appropriate for certain height. At a 90-degrees angle, compared to your knees your hips are level or slightly higher. 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 is why it is very important to get the right ball size to have the right workout.
There is another way to determint the right exervise ball size is to calculate the length of your arms from your fingertips to the shoulder. 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 difficult (and require more time) as most people usually have more knowledge of their height than their arm span.
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If you prefer arm span to determine the right exercise ball for you, this chart will help you find the correct 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 |