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. Author manuscript; available in PMC: 2014 Apr 12.
Published in final edited form as: J Speech Lang Hear Res. 2004 Feb;47(1):70–84. doi: 10.1044/1092-4388(2004/007)

Figure 2.

Figure 2

Developmental changes from 9 to 48 months in amount of rib cage–abdominal coupling (rmoving) and percentage of occurrence of type of relative movement for vocalization and rest breathing. The linear regression line demonstrates the tendency of the behavior to become more prevalent or less prevalent, or to lack change with development.