Reduced Sleep Acutely Influences Sedentary Behavior and Mood But Not Total Energy Intake in Normal-Weight and Obese Women.
Using a crossover design, 22 normal-weight and 22 obese women completed two free-living sleep conditions: (a) Normal Sleep: night of ~8 hr time in bed; and (b) Reduced Sleep: night of < 5 hr time in bed). Outcome measures were energy intake, physical activity and sedentary time, and mood. Sleep time was 7.7 ± 0.3 and 4.8 ± 0.2 hrs during the Normal Sleep and Reduced Sleep conditions, respectively (F = 1791.94; p < 0.0001). Energy intake did not differ between groups or as a function of sleep condition (F = 2.46; p = 0.1244). Sedentary time was ~ 30 min higher after the Reduced Sleep condition (F = 4.98; p = 0.0318); other physical activity outcomes were not different by condition (p > 0.05). Total mood score, depression, anger, vigor, fatigue, and confusion were worse after Reduced Sleep (p < 0.05). Reducing sleep acutely and negatively influenced sedentary time and mood in normal-weight and obese women.
a Department of Exercise Sciences , Brigham Young University , Provo , Utah.
Lora
L
Romney
b Department of Psychology and Neuroscience Center , Brigham Young University , Provo , Utah.
Michael J
MJ
Larson
a Department of Exercise Sciences , Brigham Young University , Provo , Utah.
Tyler
T
Clark
a Department of Exercise Sciences , Brigham Young University , Provo , Utah.
Larry A
LA
Tucker
a Department of Exercise Sciences , Brigham Young University , Provo , Utah.
Bruce W
BW
Bailey
a Department of Exercise Sciences , Brigham Young University , Provo , Utah.
James D
JD
LeCheminant
D000328:Adult; D000339:Affect / Q000502:physiology*; D018592:Cross-Over Studies; D002149:Energy Intake; D005260:Female; D006801:Humans; D009765:Obesity / Q000503:physiopathology; D057185:Sedentary Behavior; D012890:Sleep / Q000502:physiology*; D007319:Sleep Initiation and Maintenance Disorders / Q000150:complications*