And how aerobic capacity, repeat sprint ability, and game reality are far more intertwined than most programs admit.

Introduction: The Conditioning Argument That Never Dies

If you spend enough time around lacrosse coaches, strength coaches, or players, one debate always resurfaces:

“Do we need more running?”

One side argues lacrosse is an aerobic sport. Two-hour games, constant movement, and long seasons so conditioning should emphasize distance running and aerobic fitness.

The other side argues lacrosse is about speed and power. Short sprints, explosive dodges, violent changes of direction and so conditioning should revolve around repeat sprint ability (RSA).

Both sides are right.

And both sides are wrong.