Negative Urgency, Not Negative Affect, Mediates the Association Between Sleep Problems and Eating Disorder Symptoms
Abstract
Objective: There is increasing evidence suggesting that sleep problems may cause alterations ineating behavior (e.g., poor sleep quality is linked to eating disorders (EDs) and ED symptoms).However, little is known about the mechanisms by which sleep problems may increase EDsymptoms. Sleep deprivation has been linked to elevated negative urgency (NU; the tendency toact rashly in response to extreme negative affect [NA]), and NA. Both are consistently linked tohigher ED symptoms and potentially mediate the association between sleep problems and EDsymptoms. This study examined whether NU and NA mediate the relationship between sleepproblems and ED symptoms.
Method:: Female-identifying introductory psychology students at amidwestern university (n = 119) completed self-report measures of impulsivity (UPPS-P), EDsymptoms (Eating Disorder Diagnostic Scale), and sleep problems (Pittsburgh Sleep QualityIndex), and a task-based measure of NU (total commission errors for negatively-valenceddistractors in the CANTAB Affective Go/No-go Task). Mediation analyses included bias-corrected and accelerated confidence intervals estimated via non-parametric bootstrap.
Results:: Sleep problems were significantly associated with (Box-Cox-transformed) ED symptoms(B=0.26, p<0.01). Self-reported NU mediated a significant proportion of the association betweenPSQI sleep problems and transformed ED symptoms (Proportion = 61%; p<0.01), but task-basedNU (Proportion = 4%; p=0.73) and NA (Proportion = 23%;…
Read the paper
Related studies
- The Matrisome: In Silico Definition and In Vivo Characterization by Proteomics of Normal and Tumor Extracellular Matrices
- The Escherichia coli MG1655 in silico metabolic genotype: Its definition, characteristics, and capabilities
- In silico pharmacology for drug discovery: methods for virtual ligand screening and profiling
- In silico prediction of splice-altering single nucleotide variants in the human genome
- In silico clinical trials: how computer simulation will transform the biomedical industry
- In silico optimization of a guava antimicrobial peptide enables combinatorial exploration for peptide design
Go deeper in Evidence Hub
Evidence Hub adds a study data sheet (design, sample size, evidence level, key numbers), an AI summary and a chat grounded in the paper's text.