When working with clients who have complications from type 2 diabetes mellitus, hypoglycemia during exercise becomes a greater concern with ______.

Peripheral neuropathy impairs sensory and motor function in the extremities but does not directly disrupt the autonomic hormonal pathways responsible for detecting and correcting hypoglycemia.

Retinopathy involves microvascular damage to the retina affecting vision and has no direct role in regulating blood glucose levels during exercise.

Autonomic neuropathy damages the nerve fibers that stimulate release of counter-regulatory hormones - primarily glucagon and epinephrine - when blood glucose begins to drop during exercise. This produces hypoglycemia unawareness, meaning the client does not experience the classic warning symptoms such as sweating, tremor, or palpitations that would otherwise prompt them to stop and treat low blood sugar.

Nephropathy causes kidney damage that may affect long-term glucose excretion but does not impair the acute hormonal counter-regulatory response to exercise-induced hypoglycemia.