A small difference in exercise ball sizes can make a huge difference in your 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, it will matters a lot to choose the right ball depends on your personal height and size of armot.

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. When doing this, you need to bend your knees at a 90-degree angle and your thighs should be level with the floor. Try to find out your height and check which size that you should be trying first.

This 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’s 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 method may be a bit difficult 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, 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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