Would this hold up to weightlifting gear and activities? E.g. having a squat rack, dumbbell racks, etc on it

These Wood Floor Rolls are designed for dance and won't hold up the impacts of weightlifting gear or activities. If you are looking for a flooring solution for squat racks, dumbell racks, or any other weightlifting exercise, I recommend our 1/2" Mega Rubber Rolls, which can be found here https://www.flooringinc.com/rubber-roll/heavy-duty-roll.html.