1. Introduction
obesity, mood disturbances, anger, confusion, Obesity, weight loss regimen, fatigue, mood disturbance, pain, Intentional reductions, depression, Depression, weight loss
OBESITY, SECONDARY, OBESITY
The purpose of this secondary analysis is to compare the effects of two popular weight loss regimens, time-restricted eating (TRE) and daily calorie restriction (CR), on mood and quality-of-life measures in adults with obesity. Ninety participants were randomized to one of three interventions for 12 months: 8 h TRE (eating only between 12:00 and 8:00 p.m., with no calorie counting); CR (25% energy restriction daily); or no-intervention control group. Questionnaires were administered to measure mood (Beck Depression Inventory-II (BDI-II), and Profile of Mood States (POMS)) and quality of life (Rand 36-Item Short Form) at baseline and month 12. Body weight decreased in the TRE group (−4.87%, 95%CI: −7.61, −2.13) and CR group (−5.30%, 95%CI: −9.06, −1.54) versus controls, with no difference between TRE and CR. The BDI-II depression score did not change in the TRE or CR group, versus controls, by month 12. Likewise, there were no changes in any of the POMS subscales (tension, depression, anger, fatigue, anger, confusion, or vigor) or the total mood disturbance score in the TRE or CR group versus controls. As for quality of life, there were no significant changes in the SF-36 constructs of mental health, bodily pain, and general physical health in the TRE or CR group versus controls. However, there was a trend towards increased vitality in the TRE group (7.77 [95% CI: 0.15, 15.39] Depression and mood disturbances are commonly associated with obesity [Obesity is also associated with lower quality of life [Intentional reductions in body weight have been shown to improve both mood and quality of life [In recent years, time-restricted eating (TRE) has gained popularity as a weight loss regimen. TRE involves shortening the eating window to 4–10 h per day and fasting with energy-free beverages for the remaining hours [We recently conducted a 12-month randomized controlled trial comparing the effects of 8 h TRE and CR on body weight in adults with obesity [