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Chronic sleep restriction differentially affects implicit biases toward food among men and women: preliminary evidence
Author(s) -
Alkozei Anna,
Killgore William D. S.,
Smith Ryan,
Dailey Natalie S.,
Bajaj Sahil,
Raikes Adam C.,
Haack Monika
Publication year - 2018
Publication title -
journal of sleep research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.297
H-Index - 117
eISSN - 1365-2869
pISSN - 0962-1105
DOI - 10.1111/jsr.12629
Subject(s) - sleep restriction , sleep (system call) , obesity , sleep deprivation , calorie , medicine , calorie restriction , psychology , audiology , gerontology , circadian rhythm , computer science , operating system
Summary Chronic sleep restriction and obesity are two major public health concerns. This study investigated how chronic sleep restriction changes implicit attitudes towards low‐ and high‐calorie foods. In a randomized, counterbalanced cross‐over design, 17 participants (eight females, nine males) underwent two laboratory testing sessions where they were either sleep‐restricted for 3 weeks (i.e. underwent three weekly cycles of 5 nights of 4 h of sleep followed by 2 nights of 8 h of sleep opportunity) or received 3 weeks of control sleep (i.e. 8 h of sleep opportunity per night for 3 weeks). There was evidence for a significant sleep condition x sex interaction ( F (1, 20) = 4.60, P = 0.04). After chronic sleep restriction, men showed a trend towards a significant decrease in their implicit attitudes favouring low‐calorie foods ( P = 0.08), whereas women did not show a significant change ( P = 0.16). Men may be at increased risk of weight gain when sleep‐deprived due to a reduced bias towards low‐calorie foods.