Date of Award


Degree Type



Kinesiology and Health Science


The purpose of this study was to examine the effects that hydration status, euhydrated versus hypohydrated, has on emotional responses and the intensity of these responses to three separate stimuli of a carbohydrate-electrolyte drink. Six male participants provided informed consent for participation. During a single trial of a walking dehydration exercise in an environmental chamber at 35℃, participants viewed three stimuli, pre and post exercise, consisting of a video commercial, three still images, and live viewing of a carbohydrate-electrolyte drink while reporting perceptual measures. Arousal and feeling states decreased from 3.89 to 2.50 and 3.83 to 2.17 (p = 0.02, p = 0.07 respectively) while perceptual need for fluid consumption increased from 42.67 to 90.67 (p = 0.004). Mental effort measurements, using fixations within the area of interest over time (seconds), increased across the video commercial and the still image viewing, with significance in image 1 and 3 from euhydrated to hypohydrated. Engagement scores increased insignificantly from euhydrated to hypohydrated across all stimuli. An inverse relationship was seen comparing perceptual measures in arousal and feeling states with mental effort and engagement. However, a linear relationship was seen with perceptual need to consume fluids with mental effort and engagement. The video commercial saw the most change, or increase, when compared to the other stimuli measured in both mental effort and engagement scores suggesting that the sensitivity of mental effort and emotional testing in regard to hypohydration was elicited with video stimuli as compared to other stimuli use.

Creative Commons License

Creative Commons License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.



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