Unless I'm misreading something, it's not. It's about physical strength correlating to voting in your own interests. Not individualism, or conservatism, just self-interest.Haha, I know where you were inspired to post this study, Ripclawe. I considered posting it as well, though I figured "Eh, this is going to rustle many jimmies here. Maybe someone like Ripclawe will do it first."
Anyway, I would state, as the study does, the comparison is more so between physical strength and "individualism," as opposed to a more broad "political conservatism." From the study, being physically stronger generally means you have the ability to rely much less on the government.