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Losing sleep influences dietary intake in children: a longitudinal compositional analysis of a randomised crossover trial.
Haszard, Jillian J; Jackson, Rosie; Morrison, Silke; Meredith-Jones, Kim A; Galland, Barbara C; Beebe, Dean W; Elder, Dawn E; Taylor, Rachael W.
Afiliação
  • Haszard JJ; Biostatistics Centre, University of Otago, Dunedin, New Zealand.
  • Jackson R; Department of Medicine, University of Otago, PO Box 56, Dunedin, 9016, New Zealand.
  • Morrison S; Department of Medicine, University of Otago, PO Box 56, Dunedin, 9016, New Zealand.
  • Meredith-Jones KA; Department of Medicine, University of Otago, PO Box 56, Dunedin, 9016, New Zealand.
  • Galland BC; Department of Women's and Children's Health, University of Otago, Dunedin, New Zealand.
  • Beebe DW; Department of Pediatrics, Division of Behavioral Medicine and Clinical Psychology, University of Cincinnati College of Medicine, Cincinnati Children's Hospital Medical Centre, Cincinnati, OH, USA.
  • Elder DE; Department of Paediatrics and Child Health, University of Otago, Wellington, New Zealand.
  • Taylor RW; Department of Medicine, University of Otago, PO Box 56, Dunedin, 9016, New Zealand. Rachael.taylor@otago.ac.nz.
Int J Behav Nutr Phys Act ; 21(1): 61, 2024 Jun 04.
Article em En | MEDLINE | ID: mdl-38835084
ABSTRACT

BACKGROUND:

Although inadequate sleep increases the risk of obesity in children, the mechanisms remain unclear. The aims of this study were to assess how sleep loss influenced dietary intake in children while accounting for corresponding changes in sedentary time and physical activity; and to investigate how changes in time use related to dietary intake.

METHODS:

A randomized crossover trial in 105 healthy children (8-12 years) with normal sleep (~ 8-11 h/night) compared sleep extension (asked to turn lights off one hour earlier than usual for one week) and sleep restriction (turn lights off one hour later) conditions, separated by a washout week. 24-h time-use behaviors (sleep, wake after sleep onset, physical activity, sedentary time) were assessed using waist-worn actigraphy and dietary intake using two multiple-pass diet recalls during each intervention week. Longitudinal compositional analysis was undertaken with mixed effects regression models using isometric log ratios of time use variables as exposures and dietary variables as outcomes, and participant as a random effect.

RESULTS:

Eighty three children (10.2 years, 53% female, 62% healthy weight) had 47.9 (SD 30.1) minutes less sleep during the restriction week but were also awake for 8.5 (21.4) minutes less at night. They spent this extra time awake in the day being more sedentary (+ 31 min) and more active (+ 21 min light physical activity, + 4 min MVPA). After adjusting for all changes in 24-h time use, losing 48 min of sleep was associated with consuming significantly more energy (262 kJ, 95% CI55,470), all of which was from non-core foods (314 kJ; 43, 638). Increases in sedentary time were related to increased energy intake from non-core foods (177 kJ; 25, 329) whereas increases in MVPA were associated with higher intake from core foods (72 kJ; 7,136). Changes in diet were greater in female participants.

CONCLUSION:

Loss of sleep was associated with increased energy intake, especially of non-core foods, independent of changes in sedentary time and physical activity. Interventions focusing on improving sleep may be beneficial for improving dietary intake and weight status in children. TRIAL REGISTRATION Australian New Zealand Clinical Trials Registry ANZCTR ACTRN12618001671257, Registered 10th Oct 2018, https//www.anzctr.org.au/Trial/Registration/TrialReview.aspx?id=367587&isReview=true.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Sono / Exercício Físico / Estudos Cross-Over / Dieta / Comportamento Sedentário Limite: Child / Female / Humans / Male Idioma: En Ano de publicação: 2024 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Sono / Exercício Físico / Estudos Cross-Over / Dieta / Comportamento Sedentário Limite: Child / Female / Humans / Male Idioma: En Ano de publicação: 2024 Tipo de documento: Article