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Use of gadgets near bedtime leads to daytime sleepiness, poorer self-satisfaction

14 Jun 2018
The growing obsession with the internet is one of the reasons leading to sleep deprivation.

Individuals who usually use screen media, such as smartphones and tablets, near bedtime have shorter valid sleep time, resulting in daytime sleepiness and worse self-satisfaction, suggests a China study.

“Screen media use near bedtime has been shown to impact sleep quality adversely, and may lead to the compression of sleep duration,” the investigators posited.

The survey involved 3,639 healthy college students (mean age 19.6 years). Data collection was done through paper-pen questionnaires. Hierarchical linear regression was used to examine the associations between total usage of light-emitting electronic equipment before bed (TU-LE), sleep indices, daytime sleepiness and self-satisfaction.

Sleep indices were total sleep time (TST), sleep onset latency (SOL) and valid sleep time (VST), while self-satisfaction was represented by health satisfaction, study satisfaction and sleep satisfaction.

TST had a range of 6.0–7.9 h (mean, 7.1 h) and SOL varied from 0.1–0.5 h (mean, 0.3 h), while the difference between TST and SOL was the VST. Results of the regression suggested that TU-LE could predict daytime sleepiness level positively and VST negatively, while VST could predict daytime sleepiness level positively.

There was still a statistically significant association between TU-LE and daytime sleepiness even after controlling for VST. Additionally, TU-LE predicted positively and VST negatively the three components of self-satisfaction. After controlling for VST, TU-LE still predicted the components of self-satisfaction.

“These findings suggest that individuals reporting higher quantity of TU-LE had shorter valid sleep time, leading to worse daytime performance and self-satisfaction evaluation,” the investigators said. “Sleep education should take into consideration the cumulative effect of TU-LE.”

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Most Read Articles
Jairia Dela Cruz, 11 Jan 2019
Use of standard-dose aspirin or other nonsteroidal anti-inflammatory drugs (NSAIDs) appears to confer protection against the risk of endometrial cancer in overweight and obese women, according to a meta-analysis.
Tristan Manalac, 11 Jan 2019
Less than 15 percent of Singaporean adolescents get the recommended 8–10 hours of sleep on a school night, reports a recent study, noting that such short sleep duration is linked to symptoms of depression, overweight or obesity, and poorer self-rated health.
04 Jan 2019
Obstructive sleep apnoea may increase the risk of male-pattern baldness in men with a family history of hair loss, and this association appears to be mediated by low serum transferrin saturation levels related to hypoxia, a study suggests.
6 days ago
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