Hours Still, Then All at Once
What the body does: long hours seated in a patrol vehicle, wearing a loaded duty belt and vest, with sudden bursts of high-intensity physical work — and no way to schedule when those bursts happen.
Where it shows up: low back overwhelmingly. Also hips, neck and shoulders, and lower extremities.
Why it happens: chronic low back pain is very widely reported in this population, and the two usual suspects are prolonged seated posture in a vehicle and the weight and bulk of the duty belt. The belt shifts the pelvis and loads one side; the vehicle seat plus belt hardware means sitting is never neutral. Then the job demands an explosive effort from a body that has been static for hours.
Worth naming: the sudden-effort-from-cold pattern is the same problem an athletic trainer manages on a sideline. That's a direct line to her background.