Psychology, Faculty of Social Sciences, University of Tampere.
Department of Health, National Institute for Health and Welfare.
Dev Psychol. 2018 Jul;54(7):1208-1218. doi: 10.1037/dev0000503. Epub 2018 Mar 29.
Fragmented sleep is common in infancy. Although night awakening is known to decrease with age, in some infants night awakening is more persistent and continues into older ages. However, the influence of fragmented sleep on development is poorly known. In the present study, the longitudinal relationship between fragmented sleep and psychomotor development (Bayley Scales of Infant and Toddler Development [Bayley-III]; Bayley, 2009) was investigated in infants with (≥3 night awakenings, n = 81) and without fragmented sleep (≤1 night awakening, n = 70) within the CHILD-SLEEP birth cohort at 8 and 24 months of age. Differences in parent-reported (Brief Infant Sleep Questionnaire [BISQ]) sleep parameters were studied at 8, 18, and 24 months of age. Group differences in night awakening were stable across all assessment points. Infants with fragmented sleep slept less in total than infants without fragmented sleep and they did not compensate their nocturnal sleep during daytime. Additionally, infants with fragmented sleep spent more time awake at night than infants without fragmented sleep. However, psychomotor development did not differ between infants with and without fragmented sleep at 8 or 24 months of age. Our findings indicate that early onset fragmented sleep did not have a negative effect on psychomotor development within the first 2 years despite the differences in sleep length among infants with and without fragmented sleep. In the future, more specific domains of cognitive development and various factors affecting sleep fragmentation should be taken into account when studying the developmental effects of night awakening in infancy. (PsycINFO Database Record
睡眠碎片化在婴儿期很常见。尽管人们知道夜间觉醒随着年龄的增长而减少，但在一些婴儿中，夜间觉醒更为持续，并持续到年龄较大。然而，睡眠碎片化对发育的影响知之甚少。在本研究中，在儿童睡眠出生队列中，在 8 个月和 24 个月时，对有（≥3 次夜间觉醒，n = 81）和无睡眠碎片化（≤1 次夜间觉醒，n = 70）的婴儿进行了睡眠碎片化与精神运动发育（贝利婴幼儿发育量表[贝利-III]；贝利，2009）的纵向关系研究。在 8、18 和 24 个月时，研究了父母报告的（婴儿睡眠简短问卷[BISQ]）睡眠参数的差异。夜间觉醒的组间差异在所有评估点都很稳定。睡眠碎片化的婴儿总睡眠时间比无睡眠碎片化的婴儿少，而且他们不会在白天补偿夜间睡眠。此外，睡眠碎片化的婴儿夜间醒来的时间比无睡眠碎片化的婴儿多。然而，在 8 或 24 个月时，有和无睡眠碎片化的婴儿之间的精神运动发育没有差异。我们的研究结果表明，尽管睡眠碎片化的婴儿和无睡眠碎片化的婴儿之间的睡眠时间存在差异，但早期出现的睡眠碎片化并没有对前 2 年的精神运动发育产生负面影响。未来，在研究婴儿期夜间觉醒对认知发展的影响时，应该考虑到认知发展的特定领域和影响睡眠碎片化的各种因素。
