Complete question: A personal trainer is working with a client who is having trouble performing a single-leg balance on a foam pad. Which of the following balance training modalities is appropriate for this client?
Select one:
a. A half foam roll
b. A wobble board
c. Balance disk
d. BOSU ball
Answer: A half foam roll
Explanation: A client who is having difficulty in performing a single-leg balance on a foam pad is expected to establish a perfect balancing on a half foam roll (because of it halved flat level on the surface of the ground).