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How to to Find The Right Exercise Ball Sizes For You
Exercise ball sizes can greatly affect your workout since you are using them in various positions when exercising. While smaller balls can definitelly improve the effect of certain exercises and larger balls can provide support to your body weight if you have a bad back, choose the right ball depends on your personal height and arm size 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 way to size up the exercise ball is by sitting on it. While doing so, you need to bend your knees at a 90-degree angle and your thighs should be level with the floor. Try to locate your height and check which size you should try first.
The following 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 |
related article: Dimensions of a Golf Ball
Sitting position is the best positition to check if the new ball is for appropriate height. At a 90-degree angle, 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. This is exactly why it is very important to get the right ball size to have the right workout.
There is another approach to determining right exercise ball sizes 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.
related article: Premier League Trophy Dimensions
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 |
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