An exercise equipment manufacturer wanted to determine if sprint interval training was more effective than a continuous workout for different populations. They recruited both menopausal and pre-menopausal women and randomly assigned them one of three treatments: no exercise, continuous workout and sprint interval training. The women were given sensors in order to measure heart rate at rest, during workouts and during recovery. In this experiment, the dependent variable is type of exercise. rest versus recovery. O menopause. O heart rate.

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