They don't discuss sit-stand either, beyond saying that people only stand for 15 minutes a day, and they can't find benefits, which suggests to me that in the s

They don't discuss sit-stand either, beyond saying that people only stand for 15 minutes a day, and they can't find benefits, which suggests to me that in the sit-stand group they effectively ended up studying people who sat all day. So, are they saying sit-stand is ineffective, or are they saying that in practice people just sit?