I'm going to post this in both places you posted it.
Running footers are similar to what a Running head is. Something that gives the reader location information but is outside the regular flow of text. Guide word text - letting the reader know what is on that page - is a running footer. The sequentially numbered table labels are, in fact, running footers.
PS - this definition is found in Appendix F in Braille Formats:
running footer: a word, phrase, or number that is repeated at the bottom of more than one print page