Gutenberg Open Science: Nocturnal smartphone use affects sleep quality and cognitive and physical performance in Tunisian school-age children

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DC Element	Wert	Sprache
dc.contributor.author	Abid, Rihab	-
dc.contributor.author	Ammar, Achraf	-
dc.contributor.author	Maaloul, Rami	-
dc.contributor.author	Boudaya, Mariem	-
dc.contributor.author	Souissi, Nizar	-
dc.contributor.author	Hammouda, Omar	-
dc.date.accessioned	2024-04-18T08:50:22Z	-
dc.date.available	2024-04-18T08:50:22Z	-
dc.date.issued	2024	-
dc.identifier.uri	https://openscience.ub.uni-mainz.de/handle/20.500.12030/10317	-
dc.description.abstract	Nocturnal smartphone use emits blue light, which can adversely affect sleep, leading to a variety of negative effects, particularly in children. Therefore, the present study aimed to determine the effect of acute (AC) (one night) and repeated (RC) (five nights) nocturnal smartphone exposure on sleep, cortisol, and next-day performance in Tunisian children. Thirteen participants (seven girls and six boys, age 9 ± 0.6, height 1.32 ± 0.06, weight 34.47 ± 4.41) attended six experimental nights. The experiment started with a baseline night (BL) with no smartphone exposure, followed by repeated sessions of nocturnal smartphone exposure lasting 90 minutes (08:00 pm–09:30 pm). Actigraphy; salivary cortisol; the Stroop test (selective attention); choice reaction time (CRT); N-back (working memory); counter-movement jump (CMJ), composed of flight time (time spent in the CMJ flight phase) and jump height; and a 30 m sprint were assessed the morning after each condition. Both AC and RC shortened total sleep time (TST) (p < 0.01), with a greater decrease with RC (−46.7 min, ∆% = −9.46) than AC (−28.8 min, ∆% = −5.8) compared to BL. AC and RC significantly increased waking after sleep onset (3.5 min, ∆% = 15.05, to 9.9 min, ∆% = 43.11%) and number of errors made on the Stroop test (1.8 error, ∆% = 74.23, to 3.07 error, ∆% = 97.56%). Children made 0.15 and 0.8 more errors (∆% = 6.2 to 57.61%) and spent 46.9 s and 71.6 s more time on CRT tasks (∆% = 7.22 to 11.11%) with AC and RC, respectively, compared to BL. The high-interference index of the Stroop task, CMJ performance, and 30 m sprint speed were only altered (p < 0.01) following RC (0.36, Δ% = 41.52%; −34 s, Δ% = −9.29%, for flight time and −1.23 m, −8.72%, for jump height; 0.49 s, Δ% = 6.48, respectively) when compared to BL. In conclusion, one- or five-night exposure to smartphones disturbed the children’s sleep quality and their performance, with more pronounced effects following RC.	en_GB
dc.language.iso	eng	de
dc.rights	CC BY	*
dc.rights.uri	https://creativecommons.org/licenses/by/4.0/	*
dc.subject.ddc	610 Medizin	de_DE
dc.subject.ddc	610 Medical sciences	en_GB
dc.subject.ddc	796 Sport	de_DE
dc.subject.ddc	796 Athletic and outdoor sports and games	en_GB
dc.title	Nocturnal smartphone use affects sleep quality and cognitive and physical performance in Tunisian school-age children	en_GB
dc.type	Zeitschriftenaufsatz	de
dc.identifier.doi	http://doi.org/10.25358/openscience-10299	-
jgu.type.contenttype	Scientific article	de
jgu.type.dinitype	article	en_GB
jgu.type.version	Published version	de
jgu.type.resource	Text	de
jgu.organisation.department	FB 02 Sozialwiss., Medien u. Sport	de
jgu.organisation.number	7910	-
jgu.organisation.name	Johannes Gutenberg-Universität Mainz	-
jgu.rights.accessrights	openAccess	-
jgu.journal.title	European journal of investigation in health, psychology and education	de
jgu.journal.volume	14	de
jgu.journal.issue	4	de
jgu.pages.start	856	de
jgu.pages.end	869	de
jgu.publisher.year	2024	-
jgu.publisher.name	MDPI	de
jgu.publisher.place	Basel	de
jgu.publisher.issn	2254-9625	de
jgu.organisation.place	Mainz	-
jgu.subject.ddccode	610	de
jgu.subject.ddccode	796	de
jgu.publisher.doi	10.3390/ejihpe14040055	de
jgu.organisation.ror	https://ror.org/023b0x485	-
jgu.subject.dfg	Geistes- und Sozialwissenschaften	de
Enthalten in den Sammlungen:	DFG-491381577-G

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