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Physiological and psychological determinants of whole-body endurance exercise following short-term sustained operations with partial sleep deprivation.
Eur J Appl Physiol 2018; 118(7):1373-1384EJ

Abstract

PURPOSE

The study examined the effects of short-term field-based military training with partial sleep deprivation on whole-body endurance performance in well-trained individuals.

METHODS

Before and after a 2-day sustained operations (SUSOPS), 14 cadets performed a 15-min constant-load cycling at 65% of peak power output (PPO; CLT65), followed by an exhaustive constant-load trial at 85% of PPO (CLT85). Physiological [oxygen uptake ([Formula: see text]O2), heart rate (HR), mean arterial pressure (MAP), cardiac output (CO), and regional oxygenation (TOI) in the frontal cerebral cortex and vastus lateralis muscle] and psychological [effort perception (RPE), affective valence (FS), and perceived activation (FAS)] variables were monitored during exercise.

RESULTS

SUSOPS reduced time to exhaustion in CLT85 by 29.1% (p = 0.01). During the CLT65 trial, SUSOPS potentiated the exercise-induced elevations in [Formula: see text]O2 and HR (p < 0.05), and blunted MAP (p = 0.001). CO did not differ between trials. Yet, towards the end of both CLT85 trials, CO tended to decline (p ≤ 0.08); a response that occurred at an earlier stage in the SUSOPS trial. During CLT65, SUSOPS altered neither cerebral nor muscle TOI. The SUSOPS CLT85 trial, however, was terminated at similar leg-muscle deoxygenation (p > 0.05) and lower prefrontal cortex deoxygenation (p < 0.01). SUSOPS increased RPE at submaximal intensities (p = 0.05), and suppressed FAS and FS throughout (p < 0.01).

CONCLUSIONS

The present findings indicate, therefore, that a brief period of military sustained operations with partial sleep deprivation augment cardiorespiratory and psychological strain, limiting high-intensity endurance capacity.

Authors+Show Affiliations

Department of Environmental Physiology, Swedish Aerospace Physiology Center, Royal Institute of Technology-KTH, Berzelius väg 13, 171 65, Solna, Sweden. michail.keramidas@sth.kth.se.Military Academy Karlberg, Stockholm, Sweden.Military Academy Karlberg, Stockholm, Sweden.Department of Environmental Physiology, Swedish Aerospace Physiology Center, Royal Institute of Technology-KTH, Berzelius väg 13, 171 65, Solna, Sweden.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

29687266

Citation

Keramidas, Michail E., et al. "Physiological and Psychological Determinants of Whole-body Endurance Exercise Following Short-term Sustained Operations With Partial Sleep Deprivation." European Journal of Applied Physiology, vol. 118, no. 7, 2018, pp. 1373-1384.
Keramidas ME, Gadefors M, Nilsson LO, et al. Physiological and psychological determinants of whole-body endurance exercise following short-term sustained operations with partial sleep deprivation. Eur J Appl Physiol. 2018;118(7):1373-1384.
Keramidas, M. E., Gadefors, M., Nilsson, L. O., & Eiken, O. (2018). Physiological and psychological determinants of whole-body endurance exercise following short-term sustained operations with partial sleep deprivation. European Journal of Applied Physiology, 118(7), pp. 1373-1384. doi:10.1007/s00421-018-3869-0.
Keramidas ME, et al. Physiological and Psychological Determinants of Whole-body Endurance Exercise Following Short-term Sustained Operations With Partial Sleep Deprivation. Eur J Appl Physiol. 2018;118(7):1373-1384. PubMed PMID: 29687266.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Physiological and psychological determinants of whole-body endurance exercise following short-term sustained operations with partial sleep deprivation. AU - Keramidas,Michail E, AU - Gadefors,Magnus, AU - Nilsson,Lars-Ove, AU - Eiken,Ola, Y1 - 2018/04/23/ PY - 2018/01/11/received PY - 2018/04/16/accepted PY - 2018/4/25/pubmed PY - 2018/10/12/medline PY - 2018/4/25/entrez KW - Autonomic dysfunction KW - Cerebral oxygenation KW - Effort KW - Fatigue KW - Motivation KW - Muscle oxygenation SP - 1373 EP - 1384 JF - European journal of applied physiology JO - Eur. J. Appl. Physiol. VL - 118 IS - 7 N2 - PURPOSE: The study examined the effects of short-term field-based military training with partial sleep deprivation on whole-body endurance performance in well-trained individuals. METHODS: Before and after a 2-day sustained operations (SUSOPS), 14 cadets performed a 15-min constant-load cycling at 65% of peak power output (PPO; CLT65), followed by an exhaustive constant-load trial at 85% of PPO (CLT85). Physiological [oxygen uptake ([Formula: see text]O2), heart rate (HR), mean arterial pressure (MAP), cardiac output (CO), and regional oxygenation (TOI) in the frontal cerebral cortex and vastus lateralis muscle] and psychological [effort perception (RPE), affective valence (FS), and perceived activation (FAS)] variables were monitored during exercise. RESULTS: SUSOPS reduced time to exhaustion in CLT85 by 29.1% (p = 0.01). During the CLT65 trial, SUSOPS potentiated the exercise-induced elevations in [Formula: see text]O2 and HR (p < 0.05), and blunted MAP (p = 0.001). CO did not differ between trials. Yet, towards the end of both CLT85 trials, CO tended to decline (p ≤ 0.08); a response that occurred at an earlier stage in the SUSOPS trial. During CLT65, SUSOPS altered neither cerebral nor muscle TOI. The SUSOPS CLT85 trial, however, was terminated at similar leg-muscle deoxygenation (p > 0.05) and lower prefrontal cortex deoxygenation (p < 0.01). SUSOPS increased RPE at submaximal intensities (p = 0.05), and suppressed FAS and FS throughout (p < 0.01). CONCLUSIONS: The present findings indicate, therefore, that a brief period of military sustained operations with partial sleep deprivation augment cardiorespiratory and psychological strain, limiting high-intensity endurance capacity. SN - 1439-6327 UR - https://www.unboundmedicine.com/medline/citation/29687266/Physiological_and_psychological_determinants_of_whole_body_endurance_exercise_following_short_term_sustained_operations_with_partial_sleep_deprivation_ L2 - https://dx.doi.org/10.1007/s00421-018-3869-0 DB - PRIME DP - Unbound Medicine ER -