Although most things American tend to be be bigger and brasher (think of the cars), this is not the case with the American Martingale system.
Whereas the Super Martingale increases your risk by increasing your bets after a loss at a rate that is higher than the standard Martingale system, in American Martingale, you only increase your bet by 1 unit if you lose (rather than doubling your bets). Actually, you can alter the amount of units that you bet, but the point is that it is an addition bet, and not a multiplying bet. So the betting profile is not assteep.
Your progression would go:
Because you are not covering your losses, it is impossible to claw back losses once you have upped your bet twice.
But you reduce your exposure to losses on a long streak of losses (in which scenario with the Martingale you would hit the table limits).