AIMS: This study examined whether the association between sleep duration, as well as sleep continuity, and cognitive function differs between normally developing preterm children compared to full-term children during middle childhood. METHODS: A total of 58 early preterm (<32 weeks' gestation) and 55 full-term children, aged 6-10 years and enrolled in elementary school, were assessed on sleep duration, sleep continuity and cognitive function. We used in-home polysomnographic recordings of total sleep time, sleep efficiency and nocturnal awakenings. Cognitive tests included intelligence, arithmetic, selective attention, verbal memory, and visuospatial memory. RESULTS: Preterm children showed poorer performance in intelligence, arithmetic, selective attention, and visuospatial memory (d = 0.38-0.79, p < 0.05) and more objectively assessed nocturnal awakenings (d = 0.40, p = 0.03) than full-term children. Associations of sleep efficiency and cognitive functions (intelligence, arithmetic, selective attention, visuospatial memory) were positive and stronger for preterm children (β = 0.17-0.31, p < 0.05), while they were nonsignificant for full-term children. CONCLUSION: Results confirm lower cognitive test scores and more nocturnal awakenings in normally developing early preterm children compared to full-term children. Furthermore, poor sleep efficiency may aggravate cognitive deficits, particularly in children who are more vulnerable due to premature birth.
AIMS: This study examined whether the association between sleep duration, as well as sleep continuity, and cognitive function differs between normally developing preterm children compared to full-term children during middle childhood. METHODS: A total of 58 early preterm (<32 weeks' gestation) and 55 full-term children, aged 6-10 years and enrolled in elementary school, were assessed on sleep duration, sleep continuity and cognitive function. We used in-home polysomnographic recordings of total sleep time, sleep efficiency and nocturnal awakenings. Cognitive tests included intelligence, arithmetic, selective attention, verbal memory, and visuospatial memory. RESULTS: Preterm children showed poorer performance in intelligence, arithmetic, selective attention, and visuospatial memory (d = 0.38-0.79, p < 0.05) and more objectively assessed nocturnal awakenings (d = 0.40, p = 0.03) than full-term children. Associations of sleep efficiency and cognitive functions (intelligence, arithmetic, selective attention, visuospatial memory) were positive and stronger for preterm children (β = 0.17-0.31, p < 0.05), while they were nonsignificant for full-term children. CONCLUSION: Results confirm lower cognitive test scores and more nocturnal awakenings in normally developing early preterm children compared to full-term children. Furthermore, poor sleep efficiency may aggravate cognitive deficits, particularly in children who are more vulnerable due to premature birth.
Authors: Christopher M Cielo; Lourdes M DelRosso; Ignacio E Tapia; Sarah N Biggs; Gillian M Nixon; Lisa J Meltzer; Joel Traylor; Ji Young Kim; Carole L Marcus Journal: Sleep Med Date: 2016-03-15 Impact factor: 3.492
Authors: Kristine M Stangenes; Mari Hysing; Silje K Fevang; Irene B Elgen; Thomas Halvorsen; Trond Markestad; Bjørn Bjorvatn Journal: Front Pediatr Date: 2018-06-20 Impact factor: 3.418
Authors: Annina E Zysset; Tanja H Kakebeeke; Nadine Messerli-Bürgy; Andrea H Meyer; Kerstin Stülb; Claudia S Leeger-Aschmann; Einat A Schmutz; Amar Arhab; Jardena J Puder; Susi Kriemler; Simone Munsch; Oskar G Jenni Journal: Front Psychol Date: 2018-10-29