The purpose of this study is to investigate the effect of casein protein consumption both prior to sleep as well first thing in the morning on metabolism (increase satiety and appetite, lower resting metabolic rate, and lower blood sugar levels), when compared to nighttime protein or placebo consumption alone. Protein itself is a macronutrient that not only helps the body repair itself, and play a critical role in growth, it also aids in increasing satiety and decreasing appetite. Casein protein specifically is slow digesting dairy protein which may impact the body's metabolism for a longer period than other dairy proteins such as whey. The literature demonstrates nighttime protein ingestion prior to sleep increases metabolic rate and satiety the next morning. However, there appears to be no data on the metabolic effects of protein ingested both at night and in the morning.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Enrollment
15
casein protein (30g) or placebo (maltodextrin, 30g)
Ohio University Exercise Physiology Lab
Athens, Ohio, United States
resting metabolic rate
indirect calorimetry to measure oxygen consumption (V02) and respiratory quotient (RQ)
Time frame: baseline, during the intervention
blood glucose
fasting and pre-meal blood glucose
Time frame: baseline, during the intervention
dietary intake
food logs used to track food intake during all trial visits
Time frame: during the intervention
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