Final answer:
It is true that posterior tongue strength normative data is typically 5-10% lower than anterior tongue strength. This is due to the different muscle groups and their roles within the tongue.
Step-by-step explanation:
The statement that posterior tongue strength normative data is 5-10% lower than anterior tongue strength is True. The tongue is composed of different muscle groups, with the anterior part being typically stronger and more agile due to its role in speech and food manipulation. On the other hand, the posterior part of the tongue is less frequently engaged in such precise activities, which is why the strength is generally lower, as indicated by normative data. It is important for health professionals, especially those in the fields of speech-language pathology and otolaryngology, to understand the differences in muscle strength within the tongue for accurate assessment and therapeutic planning.