A randomized controlled trial to determine the effectiveness of early time-restricted eating on muscle performance and body composition in active, resistance trained adults. Two parallel groups will be randomly assigned to either the early time-restricted eating or a control group. All participants will be asked to maintain their usual exercise routines during the 6 week intervention period. Muscle strength and endurance are the primary outcomes. Body composition (body weight, fat mass, fat-free mass and percent body fat), hunger and satiety ratings, sleep quality, energy intake, diet quality, macronutrient composition and adherence are secondary outcome measures.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
40
The intervention group will eat in a prescribed daily feeding window (9am-5pm) and follow their normal exercise and resistance training routines. We will allow up till +/-1 hour for the eating window start and end times while aiming for an 8 hour eating window.
Department of Nutrition and Hospitality Management, University of Mississippi
University, Mississippi, United States
Muscular strength
Pre and post intervention testing of muscular strength using one-rep max
Time frame: 6-weeks
Muscular endurance
Pre and post intervention testing of muscular endurance using barbell bench press and squat.
Time frame: 6-weeks
Body weight (kg)
Pre and post intervention measures of body weight.
Time frame: 6-weeks
Hunger and satiety
Pre and post intervention subjective measure of hunger and satiety with the use of a Hunger and Satiety Visual Analog Scale (minimum value zero, maximum value 10). Higher the score, the more hungry/ less satiated one is.
Time frame: 6-weeks
Sleep quality
Pre and post intervention measure of subjective sleep quality by use of Pittsburgh Sleep Quality Scale. (each question can be scored from 0-3, then an aggregate score of the whole survey can range from 0-21; The higher the score the worst the sleep quality).
Time frame: 6-weeks
Total calorie intake
Pre and post intervention measurements of calorie intake based on 24-hour food recall survey using the Automated Self-Administered 24-hour (ASA24) software.
Time frame: 6-weeks
Diet Quality
Pre and post intervention measurements of diet quality based on 24-hour food recall survey using the ASA24 software and Healthy Eating Index.
Time frame: 6-weeks
Diet macronutrient composition
Pre and post intervention measurements of macronutrients based on 24-hour food recall survey using the ASA24 software.
Time frame: 6-weeks
Adherence
Percent of days during the 6-week trial when eTRE was adhered to as recommended. This will be recorded by the participants daily throughout the entire study.
Time frame: 6-weeks
Fat mass
Pre and post intervention measurements of body fat mass (kg).
Time frame: 6-weeks
Fat-free mass
pre and post intervention measurements of body fat-free mass (kg).
Time frame: 6-weeks
Body fat percentage
Pre and post intervention measurements of body fat percentage.
Time frame: 6-weeks
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