ABSTRACT
Este trabalho se propõe a analisar os efeitos do trabalho em turnos na qualidade de sono e na atenção sustentada de trabalhadores em turnos alternantes. Dados referentes a este esquema de trabalho, em ambiente operacional real, ainda são escassos na literatura. O recorte amostral constitui-se de 21 trabalhadores, subdivididos em 10 participantes alocados no turno diurno e 11 no turno noturno. Utilizou-se o Índice de Qualidade de Sono de Pitt Sburgh (IQSP), o diário do sono e o Teste de Vigilância Psicomotora (PVT). A qualidade do sono foi pior no turno noturno do que no diurno. A atenção sofreu oscilação no desempenho, em função da hora do dia, da idade e dos anos de trabalho em esquema de turnos alternantes, para os dois turnos. O pior desempenho na atenção foi associado com o sono de curta duração no trabalho durante o turno noturno. Sugere-se que o trabalho noturno cause mais prejuízos ao sono dos trabalhadores e que a privação do sono pode afetar o desempenho cognitivo de funções como a atenção sustentada
This work aims to analyze the effects of shift work on sleep quality and sustained attention of workers on shift rotation. Data relating to this shift work, in a real operational environment, are still scarce in the literature. The sample cut is made up of 21 workers, subdivided into 10 participants allocated to the day shift and 11 workers on night shift . The Pitt sburgh Sleep Quality Index (PSQI), the Sleep Diary and the Psychomotor Vigilance Task (PVT)were used. Sleep quality was worse on the night shift than day shift . Attention showed variation in performance, depending the ti me of day, age and years of work in shift rotation for the two shifts. The worst attention performance was associated with short sleep duration the night shift . It is suggested that the night work causes more harmto the workers' sleep and that sleep deprivation may affect cognitive performance of functions such as sustained attention
Subject(s)
Humans , Male , Adult , Middle Aged , Sleep , Sleep Disorders, Circadian Rhythm , Sleep-Wake Transition DisordersABSTRACT
During adolescence, the sleep phase delay associated with early school times increases daytime sleepiness and reduces psychomotor performance. Some studies have shown an effect of gender on psychomotor performance in adults and children. Males present faster reaction times (RT) compared with females. The aim of the present study was to evaluate the influence of gender on Palm psychomotor vigilance task (PVT) performance in adolescents. Thirty-four adolescents (19 girls, 13 to 16 years old) attending morning school classes of a public school in Curitiba, PR, Brazil, participated in the study. Sleep patterns were measured using actigraphy and sleepiness data were accessed with the Karolinska Sleepiness Scale (KSS). KSS and PVT measurements were collected at two times in the morning (8:00 and 11:00 h). The data were compared using one-way ANOVA, considering gender as a factor. ANOVA indicated that gender did not affect sleep patterns and subjective somnolence; however, a statistically significant effect of gender was detected for PVT performance. Boys presented faster RT (RT-PVT1: 345.51 ms, F = 6.08, P < 0.05; RT-PVT2: 343.30 ms, F = 6.35, P < 0.05) and fewer lapses (lapses-PVT1: 8.71, F = 4.45, P < 0.05; lapses-PVT2: 7.82, F = 7.06, P < 0.05) compared with girls (RT-PVT1: 402.96; RT-PVT2: 415.70; lapses-PVT1: 16.33; lapses-PVT2: 17.80). These results showed that this effect of gender, already reported in adults and children, is also observed in adolescents. The influence of gender should be taken into account in studies that use Palm PVT to evaluate psychomotor performance in this age range.