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- Title
G Protection When Adding Pressurized Sleevesand Gloves to a Representative G-Suit Ensemble.
- Authors
Morgan, Thomas R.; Balldin, Ulf; Fischer, Joseph R.
- Abstract
BACKGROUND: In a previous study, pressurized sleeves and gloves were found to substantially diminish or eliminate G-induced arm pain. Since this equipment presumably acts similarly to a G suit for the arms and hands, it was hypothesized that higher inflation pressures might provide an additional increment of G protection. METHODS: In a human-rated centrifuge, 15 well trained subjects using Combat Edge and ATAGS G-protective equipment were exposed to gradual and rapid onset relaxed G exposures as well as rapid onset straining and simulated aerial combat maneuver G exposures up to + 9 Gz with and without pressurized sleeves and gloves. RESULTS: The pressurized sleeves and gloves did not show any improvement in G tolerance or endurance compared to the control. However, significantly lower heart rates (6-12%) and subjective effort (11%), along with slightly less peripheral vision loss, suggest a decreased work load when wearing the pressurized sleeves and gloves. A trend to shorter time on target in a tracking task was found with the pressurized sleeves and gloves, likely due to decreased mobility of the hands, thus affecting control stick input. CONCLUSIONS: G tolerance and endurance were not improved by the pressurized sleeves and gloves. However, a lower heart rate and a decreased subjective effort level and peripheral vision loss indicated that the subjects did not have to work as hard with this equipment.
- Subjects
GLOVES; SLEEVES; HEART rate monitoring; VISION; PRESSURE
- Publication
Aerospace Medicine & Human Performance, 2016, Vol 87, Issue 5, p464
- ISSN
2375-6314
- Publication type
Article
- DOI
10.3357/AMHP.4292.2016