Objective: This study sought to determine if mindfulness training (MT) has a measurable impact on stress and attentional control as measured by objective physiological and psychological means. Background: Periods of persistent, intensive work demands are known to compromise recovery and attentional capacity. The effects of 4-month MT on salivary cortisol and performance on 2 computer-based cognitive tasks were tested on a military helicopter unit exposed to a prolonged period of high workload. Methods: MT participants were compared to a wait list control group on levels of saliva cortisol and performance on a go–no go test and a test of stimulus-driven attentional capture. Participants also reported mental demands on the go–no go test, time of wakeup, sleep duration, quality of sleep, outcome expectancies, physical activity level, self-perceived mindfulness, and symptoms of depression and anxiety. Results: The results from a mixed between–within analysis revealed that the MT participants compared to the control group had a larger pre to post increase in high- and low-cortisol slopes, and decrease in perceived mental demand imposed by the go–no go test. Conclusion: MT alleviates some of the physiological stress response and the subjective mental demands of challenging tasks in a military helicopter unit during a period of high workload.

Our results suggest that females are subjectively more sensitive than males for fore-and-aft and lateral WBV exposure, especially at higher vibration magnitude. Therefore, the differential effects in subjective responses to WBV in females and males should be taken into account in the ISO standard currently used in discomfort evaluation.

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The present study investigated age-related characteristics of visual attention by employing a useful field of view (UFOV) format with a procedure consisting of a central target letter identification task and a peripheral target regularity discrimination task. This study aimed to examine the effects of aging on UFOV performance as well as the relationship between accident history and UFOV performance. Using divided and focused attention designs, the performance of participants in two age groups (younger, older) was examined in the central-task and the peripheral-task as a function of the participants' accident histories (accident-free vs. accident-involved). The results indicated that the cost of divided attention was most evident in the peripheral-task and was significantly greater for older than younger participants. In particular, older participants had more difficulty processing events that were not part of their typical scan pattern. The results suggest that UFOV performance might function as an independent indicator of accident risk for younger adults. For older adults, evaluation of the UFOV performance in combination with self-regulation and self-assessment of driving behavior might be better indicators of accident risk.j pr_437 186..200