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There was no significant difference in vocal efficiency after the aerobic exercise, primarily due to large standard deviations within the pre- and post-exercise conditions. Most participants demonstrated favorable aerodynamic changes during singing after aerobic exercise. It is possible that in certain situations, a general aerobic warm-up could set the stage for a less-demanding vocal-specific warm-up, especially for a high voice performing early in the morning. Most participants demonstrated favorable aerodynamic changes during singing a