Context: Mechanisms explaining exercise-induced β-cell health are unknown.
Objective: This study aimed to define the role of muscle contraction and acute exercise-derived soluble humoral mediators on β-cell health.
Design: In vitro models were used.
Context: Glycemic control improves with physical activity, but the optimal exercise mode is unknown.
Objective: The objective of the study was to determine whether interval-based exercise improves postprandial glucose tolerance and free-living glycemia more than oxygen consumption- and time duration-matched continuous exercise.
Design: This was a crossover, controlled study with trials performed in randomized order.