They are engineered to do the job and any good engineer makes something like that more capable than the worst possible situation. I really don't think you need to worry. They're a 17 lb (7.7Kg) speaker and will not bounce around easily. They don't put out bass frequencies low enough to get them jumping.
If really worried, put a nail in a stud to get a speaker just an inch off the deck and crank up a bass heavy tune. See what happens. I predict...nothing.
KEF R500, R200C, R100, SVS SB2000 sub, NAD T758 receiver, Pro-Ject RPM1 TT w/ Ortofon 2M Red, Bluesound Vault2, Sony BDP-S480 BlueRay player, Samsung UN55JU6500F 4K LED TV, KEF M500 headphones, Sony CDP-CE500 CD changer.