Short-term exercise equals big-time brain boost: Even a one-time, brief burst of exercise can improve focus, problem-solving -- ScienceDailyDuring the study, research participants either sat and read a magazine or did 10 minutes of moderate-to-vigorous exercise on a stationary bicycle. Following the reading and exercise session, the researchers used eye-tracking equipment to examine participants' reaction times to a cognitively demanding eye movement task. The task was designed to challenge areas of the brain responsible for executive function such as decision-making and inhibition. "Those who had exercised showed immediate improvement. Their responses were more accurate and their reaction times were up to 50 milliseconds shorter than their pre-exercise values. That may seem minuscule but it represented a 14-per-cent gain in cognitive performance in some instances," said Heath, who is also an associate member of Western's Brain and Mind institute. He is conducting a study now to determine how long the benefits may last following exercise.