Teacher:In this task, you are given a sentence. You are expected to recognize the name of gene or protein. Although there might be several correct answers, you need to write one of them.
Teacher: Now, understand the problem? Solve this instance:  Central ( heart rate , VE , VO2 ) or local ( muscle and blood lactate , adenosine triphosphate , creatine phosphokinase , glycogen ) cues highlighted in these studies demonstrate both the complexity of effort perception , and the need for better understanding of the physiological components upon which it is based .
Student:
creatine phosphokinase