Why do my glutes cramp intensely when I walk up a set of steep stadium stairs?

Why do my glutes cramp intensely when I walk up a set of steep stadium stairs?

1. Introduction Intense gluteal cramping while walking up steep stadium stairs is primarily caused by profound metabolic fatigue and mechanical overload of the gluteus maximus during forceful hip extension. The steep incline forces the muscle to contract repeatedly from a deeply stretched position, rapidly depleting local cellular energy reserves and leading to an involuntary spasm. … Read more