0841 Impact of Sleep Duration on Diet and Activity Behaviors Within an 18-Month Behavioral Weight Loss Intervention
Year: 2019
Type: article
Abstract: Evidence suggests a reciprocal relationship between obesity-related health behaviors and sleep. The objective of this analysis was to examine whether changes in sleep duration affected energy intake (EI) and levels of moderate-vigorous PA (MVPA) within a behavioral weight loss intervention. A total of 91 adults with overweight/obesity (age 18-55 years, BMI 27-42 kg/m2) enrolled in an 18-month behavioral weight loss intervention targeting decreases in EI and increases in MVPA. EI (3-day diet diaries), MVPA (SenseWear Armband), and sleep duration (SenseWear Armband) were assessed at baseline and 18 months. Age-specific sleep recommendations (≥7 hrs/night) were used to categorize participants into 4 sleep duration groups: 1) stable adequate sleep (≥7 hrs/night at baseline and 18 months); 2) stable inadequate sleep (<7 hours/night at baseline and 18 months); 3) increased sleep (<7 hours/night at baseline and ≥7 hours/night at 18 months) and 4) decreased sleep (≥7 hours/night at baseline and <7 hours/night at 18 months). Linear regression analyses examined if changes in sleep duration predicted changes in EI, MVPA, and weight loss. EI decreased by 247±578 kcal/d (p<0.001), MVPA increased by 9±38 min/d (p=0.02) and weight decreased by 8±9 kg (p<0.001) across the intervention. While there was no overall change in sleep duration (-4±72 min/night; p=0.61) across the intervention, 33% of participants demonstrated stable adequate sleep, 41% demonstrated stable inadequate sleep, 12% increased sleep, and 14% decreased sleep. Although the overall effect of change in sleep on change in EI was not significant (p=0.08), those who improved sleep demonstrated a significant decrease in EI compared to those with stable adequate sleep (-510 kcal/d vs -43 kcal/d; p=0.02). Changes in sleep duration were not associated with change in MVPA or weight. Majority of adults were not meeting sleep recommendations throughout the 18-month intervention. Improvements in sleep duration may enhance adherence to dietary energy restriction during weight loss. Future research is needed to determine whether interventions targeting improvements in sleep duration could improve dietary adherence within a behavioral weight loss program. NA
Source: SLEEP
Institution: University of Colorado Denver
Language: English
Topic: Sleep and related disorders
Subfield: Experimental and Cognitive Psychology
Field: Psychology
Domain: Social Sciences
Open Access status: bronze
OpenAlex ID: W2938769588