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Jessica Murphy, Christopher Gladney, and Philip Sullivan

latency), the number of sleep disturbances throughout the night, and how restored one feels upon awakening ( Harvey et al., 2008 ; Ohayon et al., 2017 ; Pilcher, Ginter, & Sadowsky, 1997 ). Sleep disturbances contribute most to sleep quality scores and are closely linked with severity of self

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Shona L. Halson, Renee N. Appaneal, Marijke Welvaert, Nirav Maniar, and Michael K. Drew

quality and a global score as well as subcomponents of sleep quality are generated. The 7 subcomponents of the PSQI were calculated and represent: (1) subjective sleep quality, (2) sleep latency, (3) sleep duration, (4) sleep efficiency, (5) sleep disturbances, (6) use of sleep medication, and (7) daytime

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Jie Yu, Cindy H.P. Sit, Angus Burnett, Catherine M. Capio, Amy S.C. Ha, and Wendy Y.J. Huang

The purpose of this study was to examine the effects of fundamental movement skills (FMS) training on FMS proficiency, self-perceived physical competence (SPC), physical activity (PA), and sleep disturbance in children with developmental coordination disorder (DCD) compared with children with typical development (TD). A total of 84 children were allocated into either experimental group (DCD[exp], TD[exp]) who received 6 weeks of FMS training or control groups (DCD[con], TD[con]). FMS were assessed using the Test of Gross Motor Development-2, whereas PA was monitored using accelerometers. SPC and sleep disturbance were evaluated using questionnaires. Results showed that the DCD[exp] group had significantly higher scores in FMS and SPC compared with the DCD[con] group at posttest. The DCD[exp] group scored lower in sleep disturbance at follow-up when compared with posttest. It is suggested that short-term FMS training is effective in improving FMS and SPC and reducing sleep disturbances for children with DCD.

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Johnpaul Caia, Shona L. Halson, Patrick M. Holmberg, and Vincent G. Kelly

exacerbated sleep disturbances on the night of competition, all correlations were nonsignificant suggesting that other confounders (eg, exposure to floodlights, postmatch alcohol consumption, sleep environment) may also cause sleep disturbance, not just caffeine consumption. These findings add to the scant

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Javier Raya-González, Aaron T. Scanlan, María Soto-Célix, Alejandro Rodríguez-Fernández, and Daniel Castillo

was administered in the morning following testing. In this regard, a higher ( P  < .05) prevalence of insomnia and urine output was apparent after caffeine ingestion compared with the placebo, with no significant changes in other side effects measured. The sleep disturbances with caffeine are likely

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Asaduzzaman Khan and Nicola W. Burton


The time spent by adolescents in electronic screen-based activities has been associated with obesity and other adverse health outcomes; however, little is known about screen-based behaviors in Asian adolescents. The purpose of this study was to describe the prevalence, patterns, and correlates of recreational screen-based behaviors among adolescents in Bangladesh.


A total of 758 students (52% girls), aged 13 to 16 years, from 8 secondary schools of Dhaka city, Bangladesh, completed a survey in which the Adolescent Sedentary Activity Questionnaire was used to collect information on screen time. Total screen time was categorized as ≤2 h/day (low) or >2 h/day (high).


Approximately 79% of the adolescents had high recreational screen time, with similar values for boys (78%) and girls (80%). Median reported recreational screen time was 4.0 h/day; boys had longer times (4.3 h/day) than girls (3.6 h/day). Multivariable analyses showed that high screen time was more common among boys than girls and was positively associated with commuting to school by car, consumption of fast food ≥3 times/week, having sleep disturbance, and high family income.


This study identified high rates of recreational screen time among urban adolescents in Bangladesh and specific correlates of prolonged screen time; the results underscore the need to develop pragmatic strategies to reduce sedentariness among adolescents in Bangladesh.

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Jolan Kegelaers, Paul Wylleman, I. (Belle) N.A. van Bree, Francesco Wessels, and Raôul R.D. Oudejans

-analysis by Gouttebarge et al. ( 2019 ) reported prevalence rates of symptoms of common mental disorders (CMD) among both active and retired elite athletes between 15.8% and 19.6% for distress, 26.4% and 33.6% for depression/anxiety (not differentiated), 20.9% and 26.4% for sleep disturbance, and 18.8% and 21

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Haresh T. Suppiah, Richard Swinbourne, Jericho Wee, Vanes Tay, and Paul Gastin

sleepiness. However, there is still limited evidence on the caffeine use habits of elite youth athletes and the extent to which these options exist within their usual diets. Although there is increased recognition about the importance of sleep for athletes, the reasons for sleep disturbances are

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María Reyes Beltran-Valls, Enrique García Artero, Ana Capdevila-Seder, Alejandro Legaz-Arrese, Mireia Adelantado-Renau, and Diego Moliner-Urdiales

–10 hours of sleep per night ( 19 ). During adolescence, sleep duration and quality decrease, whereas sleep disturbances increase ( 24 , 27 , 40 ), female adolescents being more affected than male adolescents ( 4 – 6 , 24 ). These changes could lead to an increased risk of obesity ( 12 ), cardiometabolic

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Junxin Li, Binbin Yang, Miranda Varrasse, Xiaopeng Ji, MaoChun Wu, Manman Li, and Kun Li

subdomains, namely objective sleep quality, sleep latency, sleep duration, sleep efficiency, sleep disturbances, use of sleeping medication, and daytime dysfunction, are generated based on the 19 self-rated questions. These seven domains are weighted equally on an ordinal scale from 0 to 3. A global PSQI