Adults Consuming an Energy-Restricted US Healthy-Style Eating Pattern at Either the Recommended or a Higher Protein Quantity Perceive a Shift from “Poor” to “Good” Sleep
Abstract Objectives Limited evidence from secondary analyses suggests consuming a higher protein diet during weight loss improves subjective indices of sleep in adults who are overweight and obese. We sought to a priori assess the effects consuming a U.S. Healthy–Style Eating Pattern with the recommended versus a higher amount of protein and moderate energy-restriction on sleep quality indices. Methods Using of a randomized, parallel-design, 51 men and women (mean ± SEM; age: 47 ± 1 y; BMI: 32.6 ± 0.5 kg/m2) consumed a controlled U.S. Healthy-Style Eating Pattern containing 750 kcal/d less than their estimated energy requirement for 12 wk. The additional dietary protein (7.5 oz-eq/d) came from animal-based protein sources and displaced primarily whole and reined grains. Objective and subjective sleep quality indices were measured using wrist-worn actigraphy and questionnaires (Pittsburgh Sleep Quality Index and Epworth Sleepiness Scale), respectively, at pre-, mid- (week 6), and post-intervention (week 12). Results Among all participants, body mass decreased (-6.2 ± 0.4 kg). Dietary protein intake did not affect any of the objective or subjective sleep quality outcomes measured. Over time, objective measures of time spend in bed, time spent sleeping, sleep efficiency, sleep onset latency, and time awake after sleep onset did not change. Subjective measures of global sleep score (GSS, −3.8 ±0.4 au) and daytime sleepiness score (−3.8 ± 0.4 au; both P < 0.001) improved over time. The GSS improvement transitioned the group of participants from being categorized with a poor to a good sleep condition (GSS >5 versus ≤5 au of 0–21 au scale; Pre 7.9 ± 0.5 au, Post: 4.0 ± 0.6 au). Conclusions Although objective sleep quality may not improve, adults with poor sleep may perceive becoming good sleepers while consuming a moderately energy-restricted U.S. Healthy-Style Eating Pattern containing either the recommended or a higher amount of protein. Funding Sources The Beef Checkoff and American Egg Board-Egg Nutrition Center.