Figure 1. Flow-process diagram of the entire precooling research, which includes the procedure and measurements (n = 7). P; The 30-min precooling maneuvers include different interventions and one control. E; The exercise protocol would be terminated when the subject was exhausted. a. All date recorded within 5 min. b. Precooling protocols started. c. Precooling protocols terminated. d. Exercise protocol began.