INTRODUCTION: The impact of confinement and @entity1949 on risk-taking propensity is a key issue in crew management. We investigated both confinement and gender effects on risk propensity and performance during up to 36 h of extended wakefulness. METHOD: We studied 4 groups of 3 @entity1 and 3 @entity1 [N = 24, mean age (+/- SD) = 32.9 +/- 5.8 yr] for 10 consecutive days: a 7-d confined period (CONF) or a 7-d baseline (BASE) condition preceding one control night of normal sleep, one night of @entity1949 , and one recovery night in the laboratory. Risk propensity (EVAR scale) and simple reaction time task (SRTT) performances were monitored every 2.25 h (0930-1945) during CONF and every 2.11 h (0930-0745) during the @entity1949 condition. RESULTS: Overall risk propensity during extended wakefulness showed a variation in both conditions with two diurnal peaks separated by a nocturnal minima. After the confinement period, no second peak was found. Number of lapses (reaction time > 500 ms) on the SRTT varied daily in both conditions. In the normal sleep schedule, subjects increased their level of impulsiveness between the first day and the end of confinement (P < 0.05). DISCUSSION: During the night of @entity1949 , risk-taking propensity decreases and remains stable the following day in the confinement condition while it increases after the baseline period. In a confined environment under a normal sleep-wake schedule, impulsiveness increases in @entity1 and @entity1 .

Confinement and XXXX effects on propensity to take risks.

@entity1 :: ('9606', 'Species') :: ['men', 'women'] @entity1949 :: ('MESH:D012892', 'Disease') :: ['sleep deprivation']
@entity1949 :: (MESH:D012892,Disease) :: ['sleep deprivation']
