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The effects of a pressurized suit on human performance were investigated. The suit is known as an Extra-Vehicular Mobility Unit (EMU) and is worn by astronauts while working outside their spacecraft in a low earth orbit. Isolated isokinetic joint torques of three female and three male subjects (all experienced users of the suit in 1G gravity) were measured(More)
Light suppresses melatonin in humans, with the strongest response occurring in the short-wavelength portion of the spectrum between 446 and 477 nm that appears blue. Blue monochromatic light has also been shown to be more effective than longer-wavelength light for enhancing alertness. Disturbed circadian rhythms and sleep loss have been described as risk(More)
Camera based tasks are commonly perfcrmed during orbital operations, and orbital lighting conditions, such as high contrast shadowing and glare, are a factor in performance. Computer based training using virtual environments is a common tool used to make and keep crew members proficient. If computer based training included some of these harsh lighting(More)
This paper describes the work intended to supplement a previous study of Extravehicular Mobility Unit (EMU) strength fatigue data, collected from a variety of joints at a fixed velocity (60 degrees/second), by collecting torque data of a single joint (knee) over time, unsuited, under a condition of multiple fixed velocities. Knee flexion and extension(More)
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