I measured my height this morning at 5’9.75". That’s cool with me, but my girlfriend is ABSOLUTELY CERTAIN that she measured me at 5’10.75" about 2 years ago when we took my measurements/weight etc. just when I started weightlifting. She’s convinced it’s spinal compression.
In that time I’ve doubled my squat to nearly 400lb, with proportionate increases on overhead presses and deadlifts, so it might be possible, but I doubt it. And surely it would decompress with gravity boots anyway?