Are adolescents chronically sleep-deprived? An investigation of sleep habits of adolescents in the Southwest of Germany

Background: Adolescent sleep receives increasing attention. Several studies have shown that adolescents generally do not sleep enough. This survey assessed adolescents’ sleep patterns, and results were compared with sleep logs. Methods: A total of 818 students aged 12–18 attending three different school types were asked to complete a questionnaire, adapted from the ‘School Sleep Habits Survey’, and filled in a sleep protocol over 2 weeks. Information on sleep patterns and demographic data were obtained additionally. Results: A total of 601 students completed the questionnaire (i.e. 73.5% return rate), 55.1% female and 44.9% male. Average sleep duration during the week amounted to 8.04 ± 0.89 h and 9.51 ± 1.65 h on weekends. Sleep duration times on school days decreased from an average 8.64 ± 0.83 h for the age category 12–13 years to 7.83 ± 0.72 h for students above 16 years. 91.6% of all students slept less than 9.2 h per night during the week. Data from the 153 returned sleep logs showed even lower sleep times (7.75 ± 0.82 h for school nights). Conclusions: The main hypothesis that students sleep on average considerably less than the recommended 9 h during weekdays was confirmed. Bedtimes changed throughout the week with the latest on Friday and Saturday nights and the least sleep around midweek. There were no significant group differences regarding school type and environment (rural vs. urban). Interestingly, the majority reported only little daytime sleepiness and no impaired performance. Results regarding the consequences of chronic sleep deprivation in the literature are inconclusive. The impact on physiological parameters, especially metabolic functions, requires further investigations

Effects of nicotine on sleep during consumption, withdrawal and replacement therapy

Smoking constitutes the most important behavioural health risk in the Western world. By acting on various neurotransmitter systems, nicotine consumption also influences sleep and mood. Studies on the relationship between smoking, sleep disturbances, sleep-related disorders and depression led to dissimilar results. The aim of the present work is to provide a descriptive overview of the existing data regarding the relationship of nicotine consumption, withdrawal, replacement therapy and sleep disturbances in both animals and humans. Primarily symptoms of insomnia, such as increased sleep latency, sleep fragmentation and decreased slow wave sleep with reduced sleep efficiency and increased daytime sleepiness, were observed during nicotine consumption. Furthermore, most studies indicated a nicotine induced rapid eye movement (REM) sleep suppression. The effects on sleep due to therapeutic nicotine substitution after smoking cessation were often masked by withdrawal symptoms. Depressive non-smokers experienced a mood improvement under nicotine administration comparable to the effect of anti-depressants. In turn, depressive symptoms and sleep impairment during nicotine withdrawal had a negative impact on abstinence rates. Smoking was also associated with an increased prevalence of sleep-related respiratory disorders, which further worsened sleep quality and daytime sleepiness. The partly inconsistent findings of the analysed 52 studies result mostly from different methodology, necessitating a more unified approach with regard to subjects' assessment of smoking status, control for co-morbidity and use of medication as well as outcome criteria

The QuitCoach – an Australian evidence based internet approach to smoking cessation

Symposium presentatio

The cost of sleep deprivation for adolescents: Cognitive, psychometric and physiological effects after sleep curtailment

No abstract availabl

The efficacy of stepped care models involving psychosocial treatment of alcohol use disorders and nicotine dependence: A systematic review of the literature

Of particular interest in the psychosocial treatment of addictions is determining how much therapy is required to bring about behaviour change. Stepped care approaches, where non-responders to a less intensive therapy receive a more intensive intervention, aim to only provide intensive assistance to those who need it, thereby allocating therapeutic resources more efficiently. This paper provides a systematic review of stepped care models involving different levels of psychosocial intervention for the treatment of alcohol use disorders and smoking cessation. Five publications on alcohol and three on smoking were included in the review. Due to the heterogeneity of outcome measures, participant characteristics and interventions, a narrative review format was employed. Overall, little evidence was found to suggest that stepping up non-responders to more intensive therapy improved outcomes, a finding that could partially be attributed to a lack of power to find significant effects. In one study, the application of a stepped care approach was found to reduce treatment costs compared with usual care. There was some evidence that the greater differentiation between the intensity of the interventions offered at each step, the better the outcome. Further research is needed to evaluate the efficacy of stepped care approaches to providing psychosocial treatment, employing larger samples and/or consistent definitions of the nature of the interventions offered at each step, and assessing treatment response in a timely manner

Die Folgen des Schlafentzugs bei Jugendlichen: Kognitive, psychometrische und physiologische Effekte verschiedener Schlafprotokolle

No abstract availabl

What works for patients in outpatient treatment for alcohol addiction? An explorative study into clients’ evaluation of subjective factors and therapy satisfaction

This explorative survey investigated clients’ evaluation of therapy elements and other supportive factors within a randomized controlled trial. The treatment of patients with alcohol dependence consisted of pharmacotherapy (acamprosate/naltrexone/placebo) and biweekly medical management (MM). Forty-nine study participants were surveyed with a questionnaire to measure both the patients’ satisfaction with the therapy and the subjective assessment of treatment elements and supportive factors. Study participants were highly satisfied with the treatment. The supportive factors previously identified by Orford et al1 were confirmed. ‘Pharmacotherapy’ was rated significantly less effective than ‘MM’ and ‘global study attendance’ (P < 0.001). The significant differences in the evaluation of treatment elements point to a preference for regular low-key contacts rather than for medication. Such contacts based on MM could be a useful intervention in clinical care, and its effectivity should be examined more closely in further research

Sleep and memory in healthy children and adolescents – A critical review

There is mounting evidence that sleep is important for learning, memory and the underlying neural plasticity. This article aims to review published studies that evaluate the association between sleep, its distinct stages and memory systems in healthy children and adolescents. Furthermore it intends to suggest directions for future research. A computerised search of the literature for relevant articles published between 1966 and March 2008 was performed using the keywords “sleep”, “memory”, “learn”, “child”, “adolescents”, “adolescence” and “teenager”. Fifteen studies met the inclusion criteria. Published studies focused on the impact of sleep on working memory and memory consolidation. In summary, most studies support the hypothesis that sleep facilitates working memory as well as memory consolidation in children and adolescents. There is evidence that performance in abstract and complex tasks involving higher brain functions declines more strongly after sleep deprivation than the performance in simple memory tasks. Future studies are needed to better understand the impact of a variety of variables potentially modulating the interplay between sleep and memory, such as developmental stage, socioeconomic burden, circadian factors, or the level of post-learning sensory and motor activity (interference). This line of research can provide valuable input relevant to teaching, learning and public health policy

BMBF-Projekt Neurowissenschaften – Instruktion – Lernen: Elternedukation bei Grundschülern und Schlafrestriktion bei Jugendlichen

No abstract availabl