SBC Equipment Selection and Maintenance 3

Question 1

What should a trainer do if a stability ball shows visible surface cracks or deep abrasions during a pre-session inspection?

Accepted Answer

Remove it from service immediately and replace it

Answer

A ball with visible cracks or deep abrasions must be removed from use immediately because these defects significantly increase the risk of sudden failure under load.

Question 2

Which stability ball size is recommended for clients between 5'8" and 6'0" tall?

Accepted Answer

65 cm

Answer

A 65 cm ball is the standard recommendation for clients between 5'8" and 6'0" tall, providing the proper hip and knee alignment when seated.

Question 3

How does a slightly under-inflated stability ball affect exercise difficulty compared to a properly inflated one?

Accepted Answer

It decreases instability and may make exercises easier or safer for beginners

Answer

A slightly under-inflated ball has a wider, flatter base of support, reducing instability and making it more accessible for beginners or those developing initial balance skills.

Question 4

What is a primary reason why stability balls should NOT be used on surfaces with sharp debris or rough concrete?

Accepted Answer

Sharp debris can puncture or abrade the ball material

Answer

Sharp debris or rough concrete can puncture, cut, or abrade the PVC surface of a stability ball, compromising its structural integrity and increasing the risk of failure.

Question 5

Which of the following is the best indicator that a stability ball needs to be replaced rather than re-inflated?

Accepted Answer

The ball has visible cracks, bubbles, or fails to hold air after repeated inflation

Answer

Cracks, surface bubbles, or an inability to retain air are signs of material failure that cannot be repaired, making replacement necessary to ensure client safety.

SBC - Stability Ball Certification Practice Test

SBC - Stability Ball Certification Practice Test

SBC Equipment Selection and Maintenance 3