The purpose of performing the Y-lift with the client's chest/trunk supported on a swiss ball is to increase flexibility.
What are Swiss ball exercises for?
Using the Swiss ball for stretching helps a lot to increase flexibility. With the support of the ball, the movements flow better, which makes stretching a lot easier and, consequently, brings more flexibility in the medium term.
With this information, we can conclude that the purpose of performing the Y-lift with the client's chest/trunk supported on a Swiss ball is to increase flexibility because they promote the stretching of muscle fibers, causing them to increase their length.
Learn more about flexibility in brainly.com/question/2645707
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