Vol 68, No 4 (2017)
Published online: 2017-12-22

open access

Page views 942
Article views/downloads 991
Get Citation

Connect on Social Media

Connect on Social Media

Comments to Nordmo et al.’s article: effect of hardiness

Júlia Lucavei1, Laurence Pougnet23, Jean-Dominique Dewitte23, Brice Loddé23, Richard Pougnet23
Pubmed: 29297578
IMH 2017;68(4):260-261.


We would like to comment on Nordmo et al.’s article on hardiness among Norwegian Royal Navy seamen. The article is very interesting. Understanding the sleep disorders of the military can indeed make it possible to favour the preservation of their health and their competencies. The authors have highlighted the limitations of their study. They will take into account the sleep disorder factors already described in literature, such as: noise, comfort on board, shift organisations, etc. We would like to make two comments: on the one hand, highlight another limit to help future studies; on the other hand, open another perspective of prevention, not described in this article.


  1. Nordmo M, Hystad SW, Sanden S, et al. The effect of hardiness on symptoms of insomnia during a naval mission. Int Marit Health. 2017; 68(3): 147–152.
  2. Krause AJ, Simon EB, Mander BA, et al. The sleep-deprived human brain. Nat Rev Neurosci. 2017; 18(7): 404–418.
  3. Killgore WDS. Effects of sleep deprivation on cognition. Prog Brain Res. 2010; 185: 105–129.
  4. Guina J, Welton RS, Broderick PJ, et al. DSM-5 Criteria and Its Implications for Diagnosing PTSD in Military Service Members and Veterans. Curr Psychiatry Rep. 2016; 18(5): 43.
  5. Martínez-Sánchez JA. Psychological intervention in the Spanish military deployed on international operations. Psicothema. 2014; 26(2): 193–199.