Bradley James Wright

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Physiological indices of stress and ill-health (cortisol and salivary immunoglobulin A) were assessed to determine if they were predicted by Siegrist's effort-reward imbalance model (ERI) with an aim of identifying employees at risk of illness. Male Australian dairy farmers (N=66) completed the Perceived Stress Scale, Work related Questions II & III,(More)
Calorie restriction (CR) increases longevity and elicits many health promoting benefits including delaying immunosenescence and reducing the incidence of age-related diseases. Although the mechanisms underlying the health-enhancing effects of CR are not known, a likely contributing factor is alterations in immune system functioning. CR suppresses(More)
PURPOSE We assessed how 6 psychological performance enhancement techniques (PETs) differentially improved self-efficacy (SE) and skill performance. We also assessed whether vicarious experiences and verbal persuasion as posited sources of SE (Bandura, 1982 ) were supported and, further, if the effects of the 6 PETs remained after controlling for achievement(More)
OBJECTIVE This study explored the role of psychosocial factors in predicting both membership to either an irritable bowel syndrome (IBS) or control group, and the severity of IBS symptoms. METHODS A total of 149 participants (82 IBS and 67 controls) completed a battery of self-report inventories assessing disposition and environment, cognitive processes,(More)
BACKGROUND Previous evaluations of the SunSmart Program have supported the link between a written sun protection policy and improved sun protection behaviours in New South Wales (NSW) primary schools. However these evaluations have relied on self-reported data and research suggests that direct observations are required to better represent schools' usual sun(More)
OBJECTIVE Despite considerable research into associations between the effort reward imbalance (ERI) model and various health outcomes over the past 20years, the underlying mechanisms responsible for the association remain unclear. Recently, ERI investigations have examined associations with immune sub-systems (e.g., leukocytes, cytokines and(More)
We assessed in an experimental design whether the stress response towards a work task was moderated by the autonomy to choose a break during the assigned time to complete the task. This setting is defined in accordance with the theoretical framework of the job-demand-control (JDC) model of work related stress. The findings from naturalistic investigations(More)
OBJECTIVE To determine if cognitive processing, and subjective and physiological responses to stress and relaxation differed between an irritable bowel syndrome (IBS) group and control group. How these variables relate to the severity of IBS symptoms was also determined. METHODS Twenty-one IBS participants and 20 controls provided cognitive (attention and(More)
The stress reactivity hypothesis posits that the magnitude of cardiovascular reactions to acute stress tasks is related with future blood pressure status, heart hypertrophy, and atherosclerosis. We assessed the stress reactivity hypothesis and aimed to identify which physiological indices (blood pressure, heart-rate, cortisol, salivary immunoglobulin A(More)
PURPOSE Performance enhancement techniques can improve self-efficacy (SE) and task performance. The focus of this study was to determine which techniques could best achieve this with three novel tasks. METHOD Participants (n = 98) were counterbalanced across tasks and conditions (48 participants assigned to each condition in each task) and completed two(More)
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