STORY AT-A-GLANCE
Elevated blood sugar levels may interfere with certain aerobic fitness gains
Mice with hyperglycemia had reduced aerobic capacity compared to their healthy counterparts, despite equal exercise levels
Similar findings were observed in subsequent studies involving 24 young adult participants; those with higher blood sugar levels after ingesting glucose had diminished aerobic exercise capacity
Increased extracellular matrix proteins observed in hyperglycemic mice potentially obstructed the formation of new blood vessels, contributing to the blunted response to aerobic exercise
People with hyperglycemia or slightly elevated blood sugar levels may experience enhanced aerobic fitness gains by making dietary and lifestyle adjustments aimed at lowering blood sugar levels
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