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• W4251178461 abstract "Neck strain in military personnel who use night vision goggle (NVG) equipment has been documented as an item of concern among Canadian Forces (CF) CH-146 Griffon helicopter crew members. NVG equipment adds approximately 3.0 lbs to the weight of the standard issue flight helmet (approximately 5.0 lbs), thus requiring the pilot to support a weight of approximately 8.0 lbs with the neck musculature. NVG use has been associated with decreased operational abilities in some personnel. PURPOSE To determine if any differences in haemodynamics and total oxygen index (TOI, %) patterns in the upper trapezius muscles exist as a result of NVG use during simulated missions for CH-146 pilots. METHODS Subjects (n=8) completed two standard training missions (60–130 minutes) in a flight simulator on two separate days with their upper trapezius muscles monitored bilaterally using near infrared spectroscopy (NIRS). Day 1 saw the pilots complete a simulated day mission during which they wore the standard issue flight helmet; Day 2 consisted of a simulated night mission during which the helmet was mounted with NVG equipment. Differences in TOI during the first and last 120s of mission time were calculated and analyzed using paired sample t-tests. RESULTS Significant differences (p<0.05) were found between average TOI values for the start of Day (69.53% ± 0.65) and Night (64.32% ± 1.27) missions, average TOI values for the end of Day (70.70% ± 9.72) and Night (62.55% ± 2.86) missions, and average TOI values of the start and end of Night missions. No difference was found between average TOI values at the start and end of Day missions. Average TOI during Night missions was found to be lower as compared to Day missions and average TOI was found to decrease over the course of Night missions. CONCLUSIONS The additional weight of NVG equipment places a significant physiological strain upon the neck musculature of military personnel as assessed by NIRS technology. The identification of this physiological strain will motivate further research to investigate approaches to minimize the effects of the neck muscular strain on CH-146 personnel operational abilities. Supported by Canadian Forces Military Quality of Life Grant" @default.
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• W4251178461 date "2005-05-01" @default.
• W4251178461 modified "2023-10-18" @default.
• W4251178461 title "Muscle Oxygenation Changes Of Pilotʼs Trapezius Muscles During Military Day And Night-vision Helicopter Simulator Missions" @default.
• W4251178461 doi "https://doi.org/10.1249/00005768-200505001-02007" @default.
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