Two nights of sleep deprivation with or without energy restriction does not impair the thermal response to cold

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Autoren

  • Samuel J. Oliver
  • Adam D. Harper Smith
  • Ricardo J.S. Costa
  • Norbert Maassen
  • James L.J. Bilzon
  • Neil P. Walsh

Organisationseinheiten

Externe Organisationen

  • Bangor University
  • Monash University
  • University of Bath
Forschungs-netzwerk anzeigen

Details

OriginalspracheEnglisch
Seiten (von - bis)2059-2068
Seitenumfang10
FachzeitschriftEuropean Journal of Applied Physiology
Jahrgang115
Ausgabenummer10
Frühes Online-Datum21 Mai 2015
PublikationsstatusVeröffentlicht - 22 Okt. 2015

Abstract

Purpose: In persons completing exhaustive daily exercise, sleep and energy restriction have been highlighted as risk factors for hypothermia in cold environments. The present study therefore sought to determine the effect of sleep deprivation (SDEP), with and without energy restriction, on the thermal response to cold. Methods: In a random order, ten recreationally active men (mean ± SD: age 25 ± 6 years, body fat 17 ± 5 %) completed three 53 h trials: a control (CON: 436 min/night sleep), SDEP (0 min sleep), and sleep deprivation and energy restriction (SDEP + ER: 0 min sleep and 10 % daily energy requirements). Exhaustive exercise was completed after 5 and 29 h. After 53 h participants completed a semi-nude seated cold air test (CAT, 0 °C), for 4 h or until rectal core temperature (Tre) reached 36 °C. Results: Two nights of sleep and energy restriction did not impair the thermal response to cold (Tre, CON 36.15 ± 0.20 °C, SDEP 36.30 ± 0.15 °C, SDEP + ER 36.25 ± 0.20 °C, P = 0.25). Rewarming was also similar as indicated by 1 h post-CAT Tre (P = 0.78). In contrast, perceived thermal discomfort during the initial hour of the CAT tended to be greater after SDEP and SDEP + ER (P ≤ 0.1). Conclusion: Sleep and energy restriction, at least as evaluated within this experiment, should be considered minimal risk factors for hypothermia. The greater perception of cold discomfort at the same body temperature suggests that sleep and energy restriction may actually reduce cold injury risk, as people are likely to engage earlier in normal behavioral cold adaptation.

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Two nights of sleep deprivation with or without energy restriction does not impair the thermal response to cold. / Oliver, Samuel J.; Harper Smith, Adam D.; Costa, Ricardo J.S. et al.
in: European Journal of Applied Physiology, Jahrgang 115, Nr. 10, 22.10.2015, S. 2059-2068.

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Oliver, S. J., Harper Smith, A. D., Costa, R. J. S., Maassen, N., Bilzon, J. L. J., & Walsh, N. P. (2015). Two nights of sleep deprivation with or without energy restriction does not impair the thermal response to cold. European Journal of Applied Physiology, 115(10), 2059-2068. https://doi.org/10.1007/s00421-015-3184-y
Oliver SJ, Harper Smith AD, Costa RJS, Maassen N, Bilzon JLJ, Walsh NP. Two nights of sleep deprivation with or without energy restriction does not impair the thermal response to cold. European Journal of Applied Physiology. 2015 Okt 22;115(10):2059-2068. Epub 2015 Mai 21. doi: 10.1007/s00421-015-3184-y
Oliver, Samuel J. ; Harper Smith, Adam D. ; Costa, Ricardo J.S. et al. / Two nights of sleep deprivation with or without energy restriction does not impair the thermal response to cold. in: European Journal of Applied Physiology. 2015 ; Jahrgang 115, Nr. 10. S. 2059-2068.
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title = "Two nights of sleep deprivation with or without energy restriction does not impair the thermal response to cold",
abstract = "Purpose: In persons completing exhaustive daily exercise, sleep and energy restriction have been highlighted as risk factors for hypothermia in cold environments. The present study therefore sought to determine the effect of sleep deprivation (SDEP), with and without energy restriction, on the thermal response to cold. Methods: In a random order, ten recreationally active men (mean ± SD: age 25 ± 6 years, body fat 17 ± 5 %) completed three 53 h trials: a control (CON: 436 min/night sleep), SDEP (0 min sleep), and sleep deprivation and energy restriction (SDEP + ER: 0 min sleep and 10 % daily energy requirements). Exhaustive exercise was completed after 5 and 29 h. After 53 h participants completed a semi-nude seated cold air test (CAT, 0 °C), for 4 h or until rectal core temperature (Tre) reached 36 °C. Results: Two nights of sleep and energy restriction did not impair the thermal response to cold (Tre, CON 36.15 ± 0.20 °C, SDEP 36.30 ± 0.15 °C, SDEP + ER 36.25 ± 0.20 °C, P = 0.25). Rewarming was also similar as indicated by 1 h post-CAT Tre (P = 0.78). In contrast, perceived thermal discomfort during the initial hour of the CAT tended to be greater after SDEP and SDEP + ER (P ≤ 0.1). Conclusion: Sleep and energy restriction, at least as evaluated within this experiment, should be considered minimal risk factors for hypothermia. The greater perception of cold discomfort at the same body temperature suggests that sleep and energy restriction may actually reduce cold injury risk, as people are likely to engage earlier in normal behavioral cold adaptation.",
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T1 - Two nights of sleep deprivation with or without energy restriction does not impair the thermal response to cold

AU - Oliver, Samuel J.

AU - Harper Smith, Adam D.

AU - Costa, Ricardo J.S.

AU - Maassen, Norbert

AU - Bilzon, James L.J.

AU - Walsh, Neil P.

N1 - Publisher Copyright: © 2015, Springer-Verlag Berlin Heidelberg.

PY - 2015/10/22

Y1 - 2015/10/22

N2 - Purpose: In persons completing exhaustive daily exercise, sleep and energy restriction have been highlighted as risk factors for hypothermia in cold environments. The present study therefore sought to determine the effect of sleep deprivation (SDEP), with and without energy restriction, on the thermal response to cold. Methods: In a random order, ten recreationally active men (mean ± SD: age 25 ± 6 years, body fat 17 ± 5 %) completed three 53 h trials: a control (CON: 436 min/night sleep), SDEP (0 min sleep), and sleep deprivation and energy restriction (SDEP + ER: 0 min sleep and 10 % daily energy requirements). Exhaustive exercise was completed after 5 and 29 h. After 53 h participants completed a semi-nude seated cold air test (CAT, 0 °C), for 4 h or until rectal core temperature (Tre) reached 36 °C. Results: Two nights of sleep and energy restriction did not impair the thermal response to cold (Tre, CON 36.15 ± 0.20 °C, SDEP 36.30 ± 0.15 °C, SDEP + ER 36.25 ± 0.20 °C, P = 0.25). Rewarming was also similar as indicated by 1 h post-CAT Tre (P = 0.78). In contrast, perceived thermal discomfort during the initial hour of the CAT tended to be greater after SDEP and SDEP + ER (P ≤ 0.1). Conclusion: Sleep and energy restriction, at least as evaluated within this experiment, should be considered minimal risk factors for hypothermia. The greater perception of cold discomfort at the same body temperature suggests that sleep and energy restriction may actually reduce cold injury risk, as people are likely to engage earlier in normal behavioral cold adaptation.

AB - Purpose: In persons completing exhaustive daily exercise, sleep and energy restriction have been highlighted as risk factors for hypothermia in cold environments. The present study therefore sought to determine the effect of sleep deprivation (SDEP), with and without energy restriction, on the thermal response to cold. Methods: In a random order, ten recreationally active men (mean ± SD: age 25 ± 6 years, body fat 17 ± 5 %) completed three 53 h trials: a control (CON: 436 min/night sleep), SDEP (0 min sleep), and sleep deprivation and energy restriction (SDEP + ER: 0 min sleep and 10 % daily energy requirements). Exhaustive exercise was completed after 5 and 29 h. After 53 h participants completed a semi-nude seated cold air test (CAT, 0 °C), for 4 h or until rectal core temperature (Tre) reached 36 °C. Results: Two nights of sleep and energy restriction did not impair the thermal response to cold (Tre, CON 36.15 ± 0.20 °C, SDEP 36.30 ± 0.15 °C, SDEP + ER 36.25 ± 0.20 °C, P = 0.25). Rewarming was also similar as indicated by 1 h post-CAT Tre (P = 0.78). In contrast, perceived thermal discomfort during the initial hour of the CAT tended to be greater after SDEP and SDEP + ER (P ≤ 0.1). Conclusion: Sleep and energy restriction, at least as evaluated within this experiment, should be considered minimal risk factors for hypothermia. The greater perception of cold discomfort at the same body temperature suggests that sleep and energy restriction may actually reduce cold injury risk, as people are likely to engage earlier in normal behavioral cold adaptation.

KW - Cold injury

KW - Hypothermia

KW - Sleep loss

KW - Thermogenesis

KW - Thermoregulation

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U2 - 10.1007/s00421-015-3184-y

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JO - European Journal of Applied Physiology

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