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Yanovich R, Hadid A, Erlich T, et al. Physiological and cognitive military related performances after 10-kilometer march. Disaster Mil Med. 2015;1:6doi: 10.1186/2054-314X-1-6.
Yanovich, R., Hadid, A., Erlich, T., Moran, D. S., & Heled, Y. (2015). Physiological and cognitive military related performances after 10-kilometer march. Disaster and military medicine, 16. https://doi.org/10.1186/2054-314X-1-6
Yanovich, Ran, et al. "Physiological and cognitive military related performances after 10-kilometer march." Disaster and military medicine vol. 1 (2015): 6. doi: https://doi.org/10.1186/2054-314X-1-6
Yanovich R, Hadid A, Erlich T, Moran DS, Heled Y. Physiological and cognitive military related performances after 10-kilometer march. Disaster Mil Med. 2015 Feb 24;1:6. doi: 10.1186/2054-314X-1-6. eCollection 2015. PMID: 28265421; PMCID: PMC5327876.
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Disaster Mil Med. 2015 Feb 24;1:6. doi: 10.1186/2054-314X-1-6. eCollection 2015.

Physiological and cognitive military related performances after 10-kilometer march.

Disaster and military medicine

Ran Yanovich, Amir Hadid, Tomer Erlich, Daniel S Moran, Yuval Heled

Affiliations

  1. Warrior Health Research Institute, IDF Medical Corp, Tel Hashomer, Ramat-Gan, Israel.
  2. Heller Institute of Medical Research, Sheba Medical Center, Tel Hashomer, Ramat-Gan, Israel.
  3. Ariel University Center of Samaria, Ariel, Israel.

PMID: 28265421 PMCID: PMC5327876 DOI: 10.1186/2054-314X-1-6

Abstract

BACKGROUND: Prior operational activities such as marching in diverse environments, with heavy backloads may cause early fatigue and reduce the unit's readiness. The purpose of this preliminary study was to evaluate the effect of 10-kilometer (km) march on selected, military oriented, physiological and cognitive performances. Eight healthy young males (age 25 ± 3 years) performed a series of cognitive and physiological tests, first without any prior physiological strain and then after a 10 km march in comfort laboratory conditions (24°C, 50%RH) consisting a 5 km/h speed and 2-6% incline with backload weighing 30% of their body weight.

RESULTS: We found that the subjects' time to exhaustion (TTE) after the march decreased by 27% with no changes in anaerobic performance. Cognitive performance showed a significant (20%) reduction in accuracy and a tendency to reduce reaction time after the march.

CONCLUSIONS: We conclude that a moderate-intensity march under relatively comfort environmental conditions may differently decrease selected military related physical and cognitive abilities. This phenomenon is probably associated with the type and intensity of the pre-mission physical activity and the magnitude of the associated mental fatigue. We suggest that quantifying these effects, as was presented in this preliminary study, by adopting this practical scientific approach would assist in preserving the soldiers' performance and health during training and military operations.

Keywords: Four choice reaction time; Pre-mission activities; Time to exhaustion; Visual vigilance task

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