Relación entre la calidad de sueño y somnolencia diurna en estudiantes universitarios / Sleep quality and daytime sleepiness in university students / Qualidade do sono e sonolência diurna em estudantes universitários

Los estudiantes universitarios están propensos a sufrir alteraciones en el sueño como la somnolencia diurna, lo cual tiene repercusión directa en su calidad de vida y desempeño diario. Objetivo. Determinar la relación entre la calidad de sueño y somnolencia diurna en estudiantes de la Universidad nombre, en Perú. Materiales y Métodos. Se consideró el enfoque cuantitativo, de diseño no experimental, con la aplicación de los instrumentos de calidad del sueño de Pittsburgh y la escala de somnolencia Epworth. La población fue de 446 estudiantes y se obtuvo una muestra de 220 estudiantes universitarios, mediante un muestreo no probabilístico. Resultados. Se presentan severos problemas en relación a la calidad del sueño en un 60,9 %; así como en la calidad subjetiva del sueño en un 49,5 %, duración del sueño en un 54,5 %, uso de medicación hipnótica en un 56,8 %, disfunción diurna 50,5 %; y la latencia del sueño, eficiencia de sueño habitual y alteraciones del sueño en un 57,7 %. Entre tanto, la somnolencia diurna fue alta en un 58,6 %. Conclusiones. Existe relación positiva y significativa entre la calidad del sueño y la somnolencia diurna en los alumnos de la Universidad nombre, alcanzando una ρ = 0.000 (ρ < 0.05); del mismo modo se encontró relación significativa en cada una de las dimensiones de la calidad del sueño y la somnolencia diurna; de lo que se interpreta que la calidad del sueño de problemas de nivel leve, la somnolencia diurna se encuentra en niveles bajos en los universitarios.

University students are prone to sleep disturbances such as daytime sleepiness, which has a direct impact on their quality of life and daily performance. Objective. Determine the relationship between sleep quality and daytime sleepiness in students at the Universidad Nombre, in Peru. Materials and methods. The quantitative approach was considered, with a non-experimental design, with the application of the Pittsburgh sleep quality instruments and the Epworth sleepiness scale. The population was 446 students and a sample of 220 university students was obtained, through non-probabilistic sampling. Results. There are severe problems in relation to sleep quality in 60.9 %; as well as in the subjective quality of sleep in 49.5 %, duration of sleep in 54.5 %, use of hypnotic medication in 56.8 %, daytime dysfunction 50.5 %; and sleep latency, habitual sleep efficiency and sleep disturbances by 57.7 %. Meanwhile, daytime sleepiness was high at 58.6 %. Conclusions. There is a positive and significant relationship between sleep quality and daytime sleepiness in the students of the Name University, reaching ρ = 0.000 (ρ < 0.05); Likewise, a significant relationship was found in each of the dimensions of sleep quality and daytime sleepiness; from which it is interpreted that the quality of sleep has mild problems, daytime sleepiness is at low levels in university students.

Os estudantes universitários são propensos a distúrbios do sono, como a sonolência diurna, o que tem impacto direto na sua qualidade de vida e no desempenho diário. Objetivo. Determinar a relação entre qualidade do sono e sonolência diurna em estudantes da Universidad Nombre, no Peru. Materiais e métodos. Considerou-se a abordagem quantitativa, com desenho não experimental, com aplicação dos instrumentos de qualidade do sono de Pittsburgh e da escala de sonolência de Epworth. A população foi de 446 estudantes e obteve-se uma amostra de 220 estudantes universitários, através de amostragem não probabilística. Resultados. Existem problemas graves em relação à qualidade do sono em 60,9 %; bem como na qualidade subjetiva do sono em 49,5 %, duração do sono em 54,5 %, uso de medicação hipnótica em 56,8 %, disfunção diurna 50,5 %; e latência do sono, eficiência habitual do sono e distúrbios do sono em 57,7 %. Enquanto isso, a sonolência diurna foi elevada, 58,6 %. Conclusões. Existe uma relação positiva e significativa entre a qualidade do sono e a sonolência diurna nos estudantes da Universidade do Nome, atingindo ρ = 0,000 (ρ <, 05); Da mesma forma, foi encontrada relação significativa em cada uma das dimensões da qualidade do sono e da sonolência diurna; a partir do qual se interpreta que a qualidade do sono apresenta problemas leves, a sonolência diurna é baixa em estudantes universitários.

Relación entre la calidad de sueño y somnolencia diurna en estudiantes universitarios

Los estudiantes universitarios están propensos a sufrir alteraciones en el sueño como la somnolencia diurna, lo cual tiene repercusión directa en su calidad de vida y desempeño diario. Objetivo. Determinar la relación entre la calidad de sueño y somnolencia diurna en estudiantes de la Universidad nombre, en Perú. Materiales y Métodos. Se consideró el enfoque cuantitativo, de diseño no experimental, con la aplicación de los instrumentos de calidad del sueño de Pittsburgh y la escala de somnolencia Epworth. La población fue de 446 estudiantes y se obtuvo una muestra de 220 estudiantes universitarios, mediante un muestreo no probabilístico. Resultados. Se presentan severos problemas en relación a la calidad del sueño en un 60,9 %; así como en la calidad subjetiva del sueño en un 49,5 %, duración del sueño en un 54,5 %, uso de medicación hipnótica en un 56,8 %, disfunción diurna 50,5 %; y la latencia del sueño, eficiencia de sueño habitual y alteraciones del sueño en un 57,7 %. Entre tanto, la somnolencia diurna fue alta en un 58,6 %. Conclusiones. Existe relación positiva y significativa entre la calidad del sueño y la somnolencia diurna en los alumnos de la Universidad nombre, alcanzando una ρ = 0.000 (ρ < 0.05); del mismo modo se encontró relación significativa en cada una de las dimensiones de la calidad del sueño y la somnolencia diurna; de lo que se interpreta que la calidad del sueño de problemas de nivel leve, la somnolencia diurna se encuentra en niveles bajos en los universitarios.

University students are prone to sleep disturbances such as daytime sleepiness, which has a direct impact on their quality of life and daily performance. Objective. Determine the relationship between sleep quality and daytime sleepiness in students at the Universidad Nombre, in Peru. Materials and methods. The quantitative approach was considered, with a non-experimental design, with the application of the Pittsburgh sleep quality instruments and the Epworth sleepiness scale. The population was 446 students and a sample of 220 university students was obtained, through non-probabilistic sampling. Results. There are severe problems in relation to sleep quality in 60.9 %; as well as in the subjective quality of sleep in 49.5 %, duration of sleep in 54.5 %, use of hypnotic medication in 56.8 %, daytime dysfunction 50.5 %; and sleep latency, habitual sleep efficiency and sleep disturbances by 57.7 %. Meanwhile, daytime sleepiness was high at 58.6 %. Conclusions. There is a positive and significant relationship between sleep quality and daytime sleepiness in the students of the Name University, reaching ρ = 0.000 (ρ < 0.05); Likewise, a significant relationship was found in each of the dimensions of sleep quality and daytime sleepiness; from which it is interpreted that the quality of sleep has mild problems, daytime sleepiness is at low levels in university students.

Os estudantes universitários são propensos a distúrbios do sono, como a sonolência diurna, o que tem impacto direto na sua qualidade de vida e no desempenho diário. Objetivo. Determinar a relação entre qualidade do sono e sonolência diurna em estudantes da Universidad Nombre, no Peru. Materiais e métodos. Considerou-se a abordagem quantitativa, com desenho não experimental, com aplicação dos instrumentos de qualidade do sono de Pittsburgh e da escala de sonolência de Epworth. A população foi de 446 estudantes e obteve-se uma amostra de 220 estudantes universitários, através de amostragem não probabilística. Resultados. Existem problemas graves em relação à qualidade do sono em 60,9 %; bem como na qualidade subjetiva do sono em 49,5 %, duração do sono em 54,5 %, uso de medicação hipnótica em 56,8 %, disfunção diurna 50,5 %; e latência do sono, eficiência habitual do sono e distúrbios do sono em 57,7 %. Enquanto isso, a sonolência diurna foi elevada, 58,6 %. Conclusões. Existe uma relação positiva e significativa entre a qualidade do sono e a sonolência diurna nos estudantes da Universidade do Nome, atingindo ρ = 0,000 (ρ < 0,05); Da mesma forma, foi encontrada relação significativa em cada uma das dimensões da qualidade do sono e da sonolência diurna; a partir do qual se interpreta que a qualidade do sono apresenta problemas leves, a sonolência diurna é baixa em estudantes universitários.

Meta-analysis of age and actigraphy-assessed sleep characteristics across the lifespan.

STUDY OBJECTIVES: Sleep quantity and continuity vary across the lifespan. Actigraphy is a reliable and widely used behavioral measure of sleep in research and personal health monitoring. This meta-analysis provides a novel examination of whether age (in years) is associated with actigraphy-assessed sleep across the lifespan. METHODS: A systematic search of PubMed, Embase.com, Cochrane CENTRAL, and PsycINFO using "actigraphy" and "sleep" terms provided 7079 titles/abstracts; studies of individuals with known psychiatric or medical comorbidities were excluded. Ninety-one articles (N = 23 365) provided data for six meta-analyses examining sleep duration (k = 89), sleep efficiency (k = 58), bedtime (k = 19) and waketime (k = 9) for individuals ages 6-21, and bedtime (k = 7) and waketime (k = 7) for individuals ages 22 and older. RESULTS: At older ages, sleep duration was shorter (r = -0.12) and sleep efficiency was lower (r = -0.05). Older age was associated with later bedtime (r = 0.37) and wake-up time (r = 0.24) from ages 6-21, whereas older age was associated with earlier bedtime (r = -0.66) and wake-up time (r = -0.59) for ages 22 and above. The strength of these associations was modified by study continent, but not by any other moderator. CONCLUSIONS: Age was negatively associated with actigraphy-assessed sleep duration and efficiency, but the effects were small in magnitude. On the other hand, large associations were observed between age and sleep timing, despite a smaller literature and the absence of analyzable data for ages 30-60. Changes in sleep timing, rather than changes in sleep duration or continuity, may better characterize the effects of age on human sleep.

The influence of sleep on language production modalities in preschool children with Down syndrome.

Evidence suggests that sleep may relate to oral language production in children with Down syndrome. However, these children are capable of using complex referential gestures as a compensation strategy for problems with oral production, and those with a greater productive oral vocabulary have less gestural vocabulary. The goal of this study was to explore whether sleep quality relates to oral and gestural production modalities in children with Down syndrome. We evaluated 36 preschool children with and without Down syndrome, paired by chronological age and gender, with similar sociodemographic backgrounds, using actigraphy to measure sleep behaviour and the Communicative Development Inventory for Down syndrome to measure vocabulary. Children with Down syndrome with better sleep efficiency showed more oral production but less gestural production. These results highlight the importance of sleep quality to language learning in children with Down syndrome.

[Sleep efficiency in level II polysomnography of hospitalized and outpatients]. / Eficiencia del sueño en la polisomnografía nivel II de pacientes ambulatorios y hospitalizados.

Polysomnography without real-time technical supervision (sleep test level II) h as been described with adequate quality of neurological and respiratory signals. We compare the efficiency and quality of sleep in hospitalized patients and in the sleep laboratory. The study was retrospective, in a consecutive sample of systematic collection based on PSG level II. We include 486 patients: 156 hospitalized and 330 outpatients; 94 men (60.2%) vs. 181 (55%); age: 67.5 ± 12.8 vs. 59.3 ± 14.7 years, p < 0.001; body mass index (kg/m2): 29.5 ± 6.3 vs. 29.7 ± 6.3, p: 0.8. The rate of apneas and hypopneas per sleep hour (AHI in ev/h) was: 20.8 (8.3-42.5) vs. 12.1 (4.8-26.23), p < 0.01; mild obstructive sleep apnea (OSA): 30 (19.2%) vs. 104 (31.5%) p < 0.05 and severe OSA: 62 (37.2%) vs. 64 (18.9%), p < 0.0001. The hospitalized population showed greater severity by AHI (p < 0.01). Total sleep time and mean efficiency (%) were lower in hospitalized: 231 minutes vs. 304, p < 0.0001 and 63.7 vs. 76.8, p < 0.001. A small proportion had a normal efficiency (> 80% of total sleep time), being higher in outpatients: 41.5 vs. 22.5 p < 0.001. Finally, in those with total sleep time > 3 hours, the efficiency (%) was lower in hospitalized: 73.3 (60.8-82.1) vs. 78.5 (67.1-86.2), p < 0.01. In hospitalized patients the quality and efficiency of sleep were lower with a small proportion of patients sleeping four hours during a polysomnography test.

La polisomnografía sin supervisión técnica en tiempo real (estudio de sueño de nivel II) ha sido descripta como una prueba con adecuada calidad de señales neurológicas y respiratorias. Comparamos eficiencia y calidad de sueño en pacientes hospitalizados y en el laboratorio de sueño. El estudio fue retrospectivo, en una muestra consecutiva de recolección sistemática basada en polisomnografía nivel II. Incluimos 486 pacientes; 156 hospitalizados y 330 ambulatorios; 94 hombres (60.2%) vs. 181 (55%); edad: 67.5 ± 12.8 vs. 59.3 ± 14.7 años, p < 0.001; índice de masa corporal (kg/m2): 29.5 ± 6.3 vs. 29.7 ± 6.3, p: 0.8. El índice de apneas e hipopneas por hora de sueño (IAH en ev/h) fue: 20.8 (8.3-42.5) vs. 12.1 (4.8-26.23), p < 0.01, apneas obstructivas del sueño (AOS) leve: 30 (19.2%) vs.104 (31.5%) p < 0.05 y AOS grave 62 (37.2%) vs. 64 (18.9%), p < 0.0001. La población hospitalizada mostró mayor gravedad por IAH (p < 0.01). El tiempo total de sueño y la eficiencia media (%) fueron menores en hospitalizados; 231 minutos vs. 304, p < 0.0001 y 63.7 vs. 76.8, p < 0.001. Una escasa proporción tuvo una eficiencia normal (> 80% de tiempo total de sueño), siendo mayor en ambulatorios: 41.5 vs. 22.5 p < 0.001. Finalmente, en aquellos con tiempo total de sueño > 3 horas, la eficiencia (%) fue menor en hospitalizados; 73.3 (60.8-82.1) vs. 78.5 (67.1-86.2), p < 0.01. En pacientes hospitalizados la calidad y eficiencia de sueño fueron menores con escasa proporción de pacientes que duermen cuatro horas durante la polisomnografía.

Eficiencia del sueño en la polisomnografía nivel II de pacientes ambulatorios y hospitalizados / Sleep efficiency in level II polysomnography of hospitalized and outpatients

Resumen:La polisomnografía sin supervisión técnica en tiempo real (estudio de sueño de nivel II) ha sido descripta como una prueba con adecuada calidad de señales neurológicas y respiratorias. Comparamos eficiencia y calidad de sueño en pacientes hospitalizados y en el laboratorio de sueño. El estudio fue retrospectivo, en una muestra consecutiva de recolección sistemática basada en polisomnografía nivel II. Incluimos 486 pacientes; 156 hospitalizados y 330 ambulatorios; 94 hombres (60.2%) vs. 181 (55%); edad: 67.5 ± 12.8 vs. 59.3 ± 14.7 años, p < 0.001; índice de masa corporal (kg/m2): 29.5 ± 6.3 vs. 29.7 ± 6.3, p: 0.8. El índice de apneas e hipopneas por hora de sueño (IAH en ev/h) fue: 20.8 (8.3-42.5) vs. 12.1 (4.8-26.23), p < 0.01, apneas obstructivas del sueño (AOS) leve: 30 (19.2%) vs.104 (31.5%) p < 0.05 y AOS grave 62 (37.2%) vs. 64 (18.9%), p < 0.0001. La población hospitalizada mostró mayor gravedad por IAH (p < 0.01). El tiempo total de sueño y la eficiencia media (%) fueron menores en hospitalizados; 231 minutos vs. 304, p < 0.0001 y 63.7 vs. 76.8, p < 0.001. Una escasa proporción tuvo una eficiencia normal (> 80% de tiempo total de sueño), siendo mayor en ambulatorios: 41.5 vs. 22.5 p < 0.001. Finalmente, en aquellos con tiempo total de sueño > 3 horas, la eficiencia (%) fue menor en hospitalizados; 73.3 (60.8-82.1) vs. 78.5 (67.1-86.2), p < 0.01. En pacientes hospitalizados la calidad y eficiencia de sueño fueron menores con escasa proporción de pacientes que duermen cuatro horas durante la polisomnografía.

Abstract:Sleep efficiency in level II polysomnography of hospitalized and outpatients. Polysomnography without real-time technical supervision (sleep test level II) has been described with adequate quality of neurological and respiratory signals. We compare the efficiency and quality of sleep in hospitalized patients and in the sleep laboratory. The study was retrospective, in a consecutive sample of systematic collection based on PSG level II. We include 486 patients: 156 hospitalized and 330 outpatients; 94 men (60.2%) vs. 181 (55%); age: 67.5 ± 12.8 vs. 59.3 ± 14.7 years, p < 0.001; body mass index (kg/m2): 29.5 ± 6.3 vs. 29.7 ± 6.3, p: 0.8. The rate of apneas and hypopneas per sleep hour (AHI in ev/h) was: 20.8 (8.3-42.5) vs. 12.1 (4.8-26.23), p < 0.01; mild obstructive sleep apnea (OSA): 30 (19.2%) vs. 104 (31.5%) p < 0.05 and severe OSA: 62 (37.2%) vs. 64 (18.9%), p <0.0001. The hospitalized population showed greater severity by AHI (p < 0.01). Total sleep time and mean efficiency (%) were lower in hospitalized: 231 minutes vs. 304, p < 0.0001 and 63.7 vs. 76.8, p < 0.001. A small proportion had a normal efficiency (> 80% of total sleep time), being higher in outpatients: 41.5 vs. 22.5 p < 0.001. Finally, in those with total sleep time > 3 hours, the efficiency (%) was lower in hospitalized: 73.3 (60.8-82.1) vs. 78.5 (67.1-86.2), p < 0.01. In hospitalized patients the quality and efficiency of sleep were lower with a small proportion of patients sleeping four hours during a polysomnography test.

Empirical derivation of cutoff values for the sleep health metric and its relationship to cardiometabolic morbidity: results from the Midlife in the United States (MIDUS) study.

STUDY OBJECTIVES: Emerging evidence supports a multidimensional perspective of sleep in the context of health. The sleep health model, and composite sleep health score, are increasingly used in research. However, specific cutoff values that differentiate "good" from "poor" sleep, have not been empirically derived and its relationship to cardiometabolic health is less-well understood. We empirically derived cutoff values for sleep health dimensions and examined the relationship between sleep health and cardiometabolic morbidity. METHODS: Participants from two independent Biomarker Studies in the MIDUS II (N = 432, 39.8% male, age = 56.92 ± 11.45) and MIDUS Refresher (N = 268, 43.7% male, age = 51.68 ± 12.70) cohorts completed a 1-week study where sleep was assessed with daily diaries and wrist actigraphy. Self-reported physician diagnoses, medication use, and blood values were used to calculate total cardiometabolic morbidity. Receiver operating characteristic (ROC) curves were generated in the MIDUS II cohort for each sleep health dimension to determine cutoff values. Using derived cutoff values, logistic regression was used to examine the relationship between sleep health scores and cardiometabolic morbidity in the MIDUS Refresher cohort, controlling for traditional risk factors. RESULTS: Empirically derived sleep health cutoff values aligned reasonably well to cutoff values previously published in the sleep health literature and remained robust across physical and mental health outcomes. Better sleep health was significantly associated with a lower odds of cardiometabolic morbidity (OR [95% CI] = 0.901 [0.814-0.997], p = .044). CONCLUSIONS: These results contribute to the ongoing development of the sleep health model and add to the emerging research supporting a multidimensional perspective of sleep and health.

Effects of the adenosine deaminase polymorphism and caffeine intake on sleep parameters in a large population sample.

STUDY OBJECTIVES: To evaluate the association between the adenosine deaminase polymorphism, sleep architecture, and caffeine consumption. DESIGNS: Genetic association study. SETTING: NA. PATIENTS OR PARTICIPANTS: 958 participants who underwent polysomnography and genotyping. INTERVENTIONS: NA. MEASUREMENTS AND RESULTS: Individuals carrying the A allele who consumed caffeine in the day prior to polysomnography demonstrated higher sleep efficiency and REM sleep percentage, after adjustment for potential confounders. No effect was observed in the absence of caffeine. CONCLUSIONS: Our data support the role of the ADA G22A polymorphism in sleep, and demonstrate for the first time that caffeine may act as a modulator of its functional effects. CLINICAL TRIAL INFORMATION: Name: Epidemiology of sleep disturbances among adult population of the Sao Paulo City. URL: http://www.clinicaltrials.gov/ct2/show/NCT00596713?term=NCT00596713&rank=1. Number: NCT00596713