The effects of two nights of sleep deprivation with or without energy restriction on immune indices at rest and in response to cold exposure

The purpose of the study was to determine the effects of two nights of sleep deprivation with or without energy restriction on immune indices at rest and in response to cold exposure. On three randomised occasions ten males slept normally [mean (SD): 436 (21) min night −1 ; CON], were totally sleep-...

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Bibliographic Details
Published in:European journal of applied physiology 2010-06, Vol.109 (3), p.417-428
Main Authors: Costa, Ricardo J. S., Smith, Adam Harper, Oliver, Samuel J., Walters, Robert, Maassen, Norbert, Bilzon, James L. J., Walsh, Neil Peter
Format: Article
Language:English
Subjects:
Adult
Biological and medical sciences
Biomedical and Life Sciences
Biomedicine
Blood Glucose - metabolism
Body Weight
Caloric Restriction
Cell Degranulation
Cold
Cooling
Energy
Epinephrine - blood
Fundamental and applied biological sciences. Psychology
Hormones
Human Physiology
Humans
Hydrocortisone - blood
Hypothermia
Hypothermia, Induced
Immunoglobulin A, Secretory - metabolism
Leukocyte Count
Leukocytes
Lymphocytes
Male
Military personnel
Monitoring, Immunologic - methods
Motor Activity
Neutrophils
Neutrophils - immunology
Norepinephrine - blood
Occupational Medicine/Industrial Medicine
Original Article
Plasma Volume
Saliva - immunology
Sleep deprivation
Sleep Deprivation - blood
Sleep Deprivation - immunology
Sleep Deprivation - physiopathology
Sports Medicine
Stress, Physiological - immunology
Time Factors
Vertebrates: body movement. Posture. Locomotion. Flight. Swimming. Physical exercise. Rest. Sports
Young Adult
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Summary:The purpose of the study was to determine the effects of two nights of sleep deprivation with or without energy restriction on immune indices at rest and in response to cold exposure. On three randomised occasions ten males slept normally [mean (SD): 436 (21) min night −1 ; CON], were totally sleep-deprived (SDEP), or were totally sleep-deprived and 90% energy-restricted (SDEP + ER) for 53 h. After 53 h (1200 h) participants performed a seated cold air test (CAT) at 0.0°C until T re decreased to 36.0°C. Circulating leucocyte counts, neutrophil degranulation, stress hormones and saliva secretory IgA (S-IgA) were determined at 0 h, 24 h, 48 h, pre-CAT, post-CAT, 1-h and 2-h post-CAT. One night on SDEP increased bacterially stimulated neutrophil degranulation (21%, P  
ISSN:1439-6319
1439-6327
DOI:10.1007/s00421-010-1378-x