AFFECT AND PERCEIVED EXERTION DURING A 2-HOUR RUN

Affective states and the cognitive appraisal of exertion during exerci se may determine whether or not an individual will persist at an activ ity. Relationships among affect, cognition, and sensory information (p hysiological cues) ave predicted by the parallel-processing model. The purpose of this study was to examine (a) changes in affect and percei ved exertion; (b) the relationship of affect to perceived exertion; an d (c) the relationship of affect and perceived exertion to the physiol ogical cues of heart rate, ventilation, and glucose during a two-hour run. Results revealed that as exercise continued, perceived exertion i ncreased and affect became move negative. In addition, as running cont inued after 60 min the magnitude of the negative relationship of affec t to RPE increased slightly. It was expected that as fatigue increased , physiological cues would become move salient and their relationship to perceived exertion and affect would increase. This did not occur. I nstead RPE maintained a consistent moderate positive relationship with ventilation and demonstrated a moderate negative relationship with pl asma glucose after 90 min of running. Whereas affect demonstrated a mo derate positive relationship with plasma glucose after 30 min of runni ng. These results demonstrated that while running at a moderate intens ity affect became move negative, RPE increased and physiological cues related to affect and RPE differed as the run continued beyond Ga min.