Abstract des Autors

Affective states and the cognitive appraisal of exertion during exercise may determine whether or not an individual will persist at an activity. Relationships among affect, cognition, and sensory information (physiological cues) are predicted by the parallel-processing model. The purpose of this study was to examine a) changes in affect and perceived exertion, b) the relationship of affect to perceived exertion, and c) the relationship of affect and perceived exertion to the physiological cues of heart rate, ventilation, and glucose during a two-hour run. Results revealed that as exercise continued, perceived exertion increased and affect became more negative. In addition, as running continued after 60 min the magnitude of the negative relationship of affect to RPE increased slightly. It was expected that as fatigue increased, physiological cues would become more salient and their relationship to perceived exertion and affect would increase. This did not occur. Instead RPE maintained a consistent moderate positive relationship with ventilation and demonstrated a moderate negative relationship with plasma glucose after 90 min of running. Whereas affect demonstrated a moderate positive relationship with plasma glucose after 90 min of running. These results demonstrated that while running at a moderate intensity affect became more negative, RPE increased and physiological cues related to affect and RPE differed as the run continued beyond 60 min. Verf.-Referat