How I can Find The Right Exercise Ball Sizes For You
Posted on February 9, 2010
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Exercise ball sizes can have a great effect in your workout since you are using them in various positions when exercising. Although smaller balls can improve the effects 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 approach in sizing up the exercise ball is by sitting on it. While doing this, bend your knees at a 90-degrees angle, and your thighs shoud be level with the floor. Try to locate your height and check which size that you should be trying 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 to determine whether the new ball is appropriate for certain height. At an angle of 90-degrees, 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. This is exactly why it is important to achieve the right ball in order to have the right workout.
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 method may be a bit tricky as most people usually have more knowledge of their height than their arm span.
related article: Premier League Trophy Dimensions
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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