Skip to main content
padlock icon - secure page this page is secure

Caffeine Maintains Vigilance and Improves Run Times During Night Operations for Special Forces

Buy Article:

$27.00 + tax (Refund Policy)

McLellan TM, Kamimori GH, Voss DM, Bell DG, Cole KG, Johnson D. Caffeine maintains vigilance and improves run times during night operations for Special Forces. Aviat Space Environ Med 2005; 76:647–654.

Purpose: This study examined the effects of caffeine (CAF) on vigilance, marksmanship, and run performance during 27 h of sustained wakefulness in Special Forces personnel. Methods: There were 31 soldiers (29.8 ± 5.4 yr, 86.4 ± 8.6 kg) who were divided into placebo (PLAC, n = 15) and CAF (n = 16) groups. A 6.3-km control run was completed on the morning of Day 1. In the evening of Day 2, soldiers performed a control observation and reconnaissance vigilance task (ORVT) in the field. This 90-min task was repeated twice more between 02:00 and 06:00 on Day 3 during an overnight period of sleep deprivation. Marksmanship was assessed before and after the ORVT. PLAC or 200 mg of CAF gum was administered at 01:45, 03:45, and approximately 06:30 on Day 3. A final 6.3-km run commenced within 30 min of receiving the final dose. Results: ORVT was maintained in CAF at control levels of 77 ± 13% during the overnight testing. However, values decreased significantly for PLAC from 77 ± 15% to 54 ± 29% and 51 ± 31% during the first and second overnight testing periods, respectively. CAF had no effect on marksmanship but improved 6.3-km run times by 1.2 ± 1.8 min. Run times slowed for PLAC by 0.9 ± 0.8 min from approximately 35 min during the control run; the changes in performance were significant between groups. Conclusions: It was concluded that CAF maintained vigilance and improved running performance during an overnight field operation for Special Forces personnel.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Article Media
No Metrics

Keywords: continuous operations; ergogenic and cognitive aids; marksmanship; physical and cognitive performance; psychomotor task

Document Type: Research Article

Publication date: July 1, 2005

More about this publication?
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more