Interactional influence of fatigue and task difficulty on cardiovascular response: Demonstrations involving an aerobic exercise challenge

Wright, Rex A.; Shim, Jin Joo; Hogan, Beverly; Duncan, Jessica; Thomas, Christopher

doi:10.1111/j.1469-8986.2012.01390.x

Cited by 14 publications

(10 citation statements)

References 49 publications

(48 reference statements)

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“…Baseline measures were computed by averaging readings during the last 2 minutes of the 10-minute baseline period. Measures from the first 8 minutes of the resting period are typically not used because blood pressure is still declining to a true resting level (Wright et al 2012). Blood pressure during each of the five video clips was computed as the average of all readings taken during viewing of that clip.…”

Section: Methodsmentioning

confidence: 99%

Emotional and Physiological Desensitization to Real-Life and Movie Violence

Mrug

Madan

Cook

et al. 2014

J Youth Adolescence

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Youth are exposed to large amounts of violence in real life and media, which may lead to desensitization. Given evidence of curvilinear associations between exposure to violence and emotional distress, we examined linear and curvilinear associations of exposure to real-life and movie violence with PTSD symptoms, empathy, and physiological arousal, as well emotional and physiological reactivity to movie violence. College students (N=209; mean age=18.74) reported on their exposure to real-life and televised violence, PTSD symptoms, and empathy. Then, students were randomly assigned to view a series of violent or nonviolent high-action movie scenes, providing ratings of emotional distress after each clip. Blood pressure was measured at rest and during video viewing. Results showed that with increasing exposure to real-life violence, youth reported more PTSD symptoms and greater identification with fictional characters. Cognitive and emotional empathy increased from low to medium levels of exposure to violence, but declined at higher levels. For males, exposure to higher levels of real-life violence was associated with diminishing (vs. increasing) emotional distress when viewing violent videos. Exposure to televised violence was generally unrelated to emotional functioning. However, those with medium levels of exposure to TV/movie violence experienced lower elevations of blood pressure when viewing violent videos compared to those with low exposure, and those with higher levels of exposure evidenced rapid increase in blood pressure that quickly declined over time. The results point to diminished empathy and reduced emotional reactivity to violence as key aspects of desensitization to real-life violence, and more limited evidence of physiological desensitization to movie violence among those exposed to high levels of televised violence.

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Section: Methodsmentioning

confidence: 99%

Emotional and Physiological Desensitization to Real-Life and Movie Violence

Mrug

Madan

Cook

et al. 2014

J Youth Adolescence

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“…Cardiovascular implications above have been confirmed repeatedly in fatigue studies involving a range of procedures and conducted in different laboratories (e.g., Marcora et al 2008; Schmidt et al 2010; Wright et al 2003; 2012). Moreover, they can be profitably brought to bear with respect to inhibition, a topic to which Kurzban et al devote considerable attention.…”

mentioning

confidence: 75%

Effort processes in achieving performance outcomes: Interrelations among and roles of core constructs

Wright

Pantaleo

2013

Behav Brain Sci

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We address points of confusion pertaining to interrelations among and roles of core constructs involved in the production of performance outcomes. We do so informed by the body of work derived from Brehm's seminal motivation intensity theory--in particular an elaboration from the theory concerned with fatigue influence on effort and associated cardiovascular responses in people confronted with performance challenges.

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“…[13][14][15][16] Fatigue may actually play a role in determining cardiovascular responses to the execution of challenging tasks, but it is not a singular effect but rather a multifaceted one -increasing responses under some conditions and reducing them under other conditions. [17] Thus, ones physiological response to changes in activity while interpreting images may differ depending on the circumstances as well as one's baseline physiological state.…”

Section: Discussionmentioning

confidence: 99%

Potential method for relieving fatigue in radiologists

Krupiński

2013

Medical Imaging 2013: Image Perception, Observer Performance, and Technology Assessment

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Radiologists moved to an environment in which they read digital images off of computer displays instead of film images off of light boxes. With film and light boxes they typically would read for about an hour (seated) and then take a break while the film librarian changed the images on the view box. With digital viewing off computers they tend to sit all day in front of the computers with far fewer breaks and opportunity to stand up and move around than with film. There is concern that this lack of activity not only contributes to back, shoulder and neck discomfort, but also contributes to increased fatigue which has been shown to impact reader performance. The goal of this study was to determine if there are differences in physiologic vital signs (heart rate and blood pressure) of radiologists as a function of whether they read images while seated or while standing up. Five subjects had their blood pressure and heart rate measured while seated and while standing reading cases in the normal clinical setting. For all three measures there was a statistically significant (p < 0.0001) difference between seated and standing measures with seated being lower than standing. The higher heart rate and blood pressure with standing suggests that the radiologists are more active in this position and thus potentially more attentive than while seated. This study will be followed up to determine impact on diagnostic performance of standing vs seated as well as subjective ratings of wakefulness and mood. PURPOSERadiologists have moved from an environment in which they read digital images off computer displays instead of film images off light boxes. With film and light boxes they typically would read for about an hour (seated) and then take a break while the film librarian changed the images on the view box. During that time they would generally leave the viewing area, move to another alternator to resume work, or go to their offices to carry out other tasks. More often than not, they essentially got up and moved around a bit. With the transition to digital viewing off computers they tend to sit all day in front of the computers with far fewer breaks and opportunities to stand up and move around than with film. There is concern that this lack of activity not only contributes to back, shoulder and neck discomfort, but also contributes to lack of activity that could affect their physical well-being in general. One study of two large hospitals reported backache in 83% of technologists and neck pain in 59% of female radiologists. Mouse and keyboard use has also been associated with development of carpal and cubital tunnel syndrome in radiologists [1-3] Hedge et al. have documented that current patterns of information technology use in healthcare specifically pose an increased risk of work-related musculoskeletal disorders. [4] As a first step in our investigations into fatigue, we designed a survey to find out whether fatigue is a common and important problem in the radiology reading room that was given at different times during the d...

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Interactional influence of fatigue and task difficulty on cardiovascular response: Demonstrations involving an aerobic exercise challenge

Cited by 14 publications

References 49 publications

Emotional and Physiological Desensitization to Real-Life and Movie Violence

Emotional and Physiological Desensitization to Real-Life and Movie Violence

Effort processes in achieving performance outcomes: Interrelations among and roles of core constructs

Potential method for relieving fatigue in radiologists

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