I'd rather not do that to my child

With our new baby came an instruction manual (well, maybe a book that my in-laws got us). It has some good advice, it's mostly fact-based (i.e. it does a pretty good job shutting down the anti-vacciners), but one thing caught me eye. It's about soothing a fussy baby:

Dan, a chiropractor father of a fussy baby, came up with this fuss fixer. Hold baby at his hips and swing him upside down at sixty beats per minute, like the pendulum of a grandfather clock. According to chiropractic research, upside-down swinging has a calming effect.

Yikes... how did that research get IRB approval?