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The aim of this study was to investigate sleep‐wake behavior and gain insights into perceived impairment (sleep, fatigue, and cognitive function) of athletes competing in two international multi‐day adventure races. Twenty‐four athletes took part across two independent adventure races: Queensland, Australia and Alaska, USA. Individual sleep periods were determined via actigraphy, and racers self‐reported their perceived sleep disturbances, sleep impairment, fatigue and cognitive function. Each of these indices was calculated for pre‐, during‐ and post‐race periods. Sleep was severely restricted during the race period compared to pre‐race (Queensland, 7:46 [0:29] vs. 2:50 [1:01]; Alaska, 7:39 [0:58] vs. 2:45 [2:05]; mean [SD], hh:mm). As a result, there was a large cumulative sleep debt at race completion, which was not 'reversed' in the post‐race period (up to 1 week). The deterioration in all four self‐reported scales of perceived impairment during the race period was largely restored in the post‐race period. This is the first study to document objective sleep‐wake behaviors and subjective impairment of adventure racers, in the context of two geographically diverse, multi‐day, international adventure races. Measures of sleep deprivation indicate that sleep debt was extreme and did not recover to pre‐race levels within 1 week following each race. Despite this objective debt continuing, perceived impairment returned to pre‐race levels quickly post‐race. Therefore, further examination of actual and perceived sleep recovery is warranted. Adventure racing presents a unique scenario to examine sleep, performance and recovery. Highlights: Adventure, or expedition, racing is an ultra‐endurance sport, carried out over multiple days, which presents an extreme test of athletic performance under conditions of severe sleep restriction and deprivation. However, limited research has been conducted to examine sleep and perceived impairment of athletes who choose this sport.Using actigraphy, the team‐based nature of adventure racing was evident with severe sleep restriction synchronized between team members during the race.There was significant sleep debt accumulated across the race and was not recovered by the end of the measurement period. Furthermore, perceived impairment returned to pre‐race levels quickly after race completion, despite the remaining sleep debt objectively observed.This study posits that adventure racing presents a unique context to study sleep, performance, and recovery. [ABSTRACT FROM AUTHOR]

Background: In developed economies, most children attend Early Childhood Education and Care (ECEC) services before school entry, many from early life and across long days. For this reason, ECEC services present significant potential to provide food environments that positively influence eating behaviours and food preferences with attendant effect on life course trajectories of health and wellbeing. Yet there is evidence that feeding practices that limit optimal ongoing nutrition, such as pressure and restriction, are amplified in ECEC services serving disadvantaged communities. We sought to identify underlying explanatory mechanisms through observation of children's feeding experiences and educator explanations comparing, family‐provided and service‐provided meals. Method: This study used qualitative analyses of educator interviews and observation records from 55 mealtimes in 10 ECEC services: 5 providing food and 5 requiring family food provision. Results: High levels of concern drove educator's controlling feeding practices at mealtimes but presented differently across meal provision modes. In centres that provided food, educators' concern focused on food variety, manifesting in pressure to 'try' foods. In centres requiring family‐provided food, concern focused on nutrition quantity and quality and manifested as control of order of food consumption and pacing of intake to ensure food lasted across the day. Interview data suggested that conflict aversion limited optimal nutrition. In centres providing food, this was seen in menus that prioritized child food preferences. In centres requiring family meal provision, conflict aversion was seen as reticence to discuss lunchbox contents with families. Conclusion: The findings direct attention to public health intervention. Currently, ECEC face significant barriers to realizing their potential to support child nutrition and establish positive life course trajectories of nutrition. To do so requires targeted supports that enable sufficient supply and quality of food in the context of poverty. [ABSTRACT FROM AUTHOR]

Preschool children consume a large proportion of their daily food intake in their childcare settings. These settings, therefore, provide important opportunities for children to experience food socialisation, and related positive nutrition. Yet, the extent to which these opportunities are taken, particularly in socioeconomically disadvantaged areas where risk of poor nutrition is high, is not well documented. This study focused on 10 childcare centres in socially disadvantaged locations and examined daily feeding practices via direct in-situ observation (n = 189 children observed). Centres were randomly selected based on type of food provision: centre-provided (n = 5 centres) or family-provided (n = 5 centres). Analyses showed that where food was family-provided, educators were significantly more likely to use controlling feeding practices, including pressuring children to eat, restricting food choices and rushing children into finishing meals. These practices were particularly evident during mid-morning meals, where pressuring children to eat healthy foods first, was more often observed. Further research and interventions that target feeding practices in childcare are indicated and should consider how source of food provision impacts upon these practices. [ABSTRACT FROM AUTHOR]

Background: There is currently little evidence concerning the impact of the inter-twin relationship on behavioral outcomes and yet the twin relationship is frequently hypothesized to be a unique source of psychopathology in twins. The current study asked whether the inter-twin relationship is a predictor of behavioral difficulties and whether there are zygosity differences in this relationship.Method: An Australian sample of same sex twins (N = 356, 164 MZ and 192 DZ) was studied in the year prior to school (Time 1) and again in first year of school (Time 2). Associations between twin-relationship and behavior problems were examined via path-analysis, and Satorra-Bentler chi-square difference tests were used to compare twins across zygosity.Results: Results show that both conflict and lower levels of warmth at Time 1 were predictive of hyperactivity and conduct disorder at Time 2, but they were not associated with emotional difficulties or peer problems. While DZ twins shared less warmth than MZ twins, there were no differences in behavior problems.Conclusion: Conflict and lower levels of warmth in the inter-twin relationship are associated with hyperactivity and conduct disorder and may serve as important considerations when making decisions regarding class separation at entry to school. [ABSTRACT FROM AUTHOR]