Hannah Connon will present her PhD IDST proposal defence on Tuesday, January 20, at 12:00 noon in the Seminar Room (417) at the Harriet Irving Library. Title: “The Effect of Mental Fatigue on the Psychobiological Response to a 10km Cycling Time Trial: A Neuroergonomic Approach” Supervisory Dr. David Scott, Supervisor, Kinesiology Committee: Dr. Stacey Reading, Kinesiology Dr. Ryan Hamilton, Psychology Chairperson of Dr. Linda Eyre, Assistant Dean of Proposal Defence: Graduate Studies ABSTRACT: Mental fatigue is best described as a change in psychophysiological state due to sustained cognitive or perceptual performance. The negative effect of mental fatigue on occupational and cognitive tasks has been well documented (Boksem, Meijman, & Lorist, 2005; Lorist et al., 2000; Lundberg et al., 2002). Evidence also exists to support the notion that the response to stress is different for physiologically trained and untrained individuals (Rimmele et al., 2007). In addition, the effect of individual differences on the psychophysiological response to exercise has also been shown, such as a lowered heart rate response, reduced anxiety, and differing perceptions of exertion (Gondola & Tuckman, 1982; Kayser, 2003). Very few studies exist that show the effect of mental fatigue on physical performance (Marcora, Staiano, & Manning, 2009; Mehta & Parasuraman, 2013), the studies that do suggest that mental fatigue has a negative effect. The purpose of the study is to investigate the effect that mental fatigue has on the psychobiological response to exercise, whilst controlling for aerobic capacity, perfectionism, and intrinsic motivation. A neuroergonomic approach will be used by implementing Near Infrared Spectroscopy (NIRS) to examine cerebral hemodynamics. Participants (N=50) will undergo two phases of testing; an initial screening phase and an experimental phase. A matched grouped design will be utilized, randomly assigning participants to either the control or experimental group. The testing phase consists of either a 90 minute mentally fatiguing cognitive task, or a neutral control condition, followed by a 10km cycling time trial. Dependent variables will be time to completion, heart rate, VO2,, peak power, oxygenated hemoglobin, deoxygenated hemoglobin, cerebral blood flow, self-efficacy, and rate of perceived exertion.
Posted on: Sun, 18 Jan 2015 20:34:04 +0000
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