Set and scene designers for Star Trek couldn't invent everything that appeared on the show. So they selected real-life everyday objects from our time that would fit into their image of the future. In this case, Captain Janeway's office chair is a Signét 8400 Chair by HÅG, which is Norwegian design firm.
I found this information on Star Trek + Design, a website created by a Trekkie with time on his hands during the pandemic. The author, Eno, has carefully researched many of the objects, such as furniture and tableware, that appear in the Star Trek franchise.