Before it emerged as a unique discipline , control engineering was practiced as a part of mechanical engineering and control theory was studied as a part of electrical engineering , since electrical circuits can often be easily described using control theory techniques .
Modern control engineering is closely related to electrical , electronic and computer engineering , as electronic circuits can often be easily explained using control theory techniques .
An exercise physiologist 's area of study may include but is not limited to biochemistry , bioenergetics , cardiopulmonary function , hematology , biomechanics , skeletal muscle physiology , neuroendocrine function , and central and perpheral nervous system function .