@article{ref1,
title="The energy expenditure of helicopter pilots",
journal="Aviation, space, and environmental medicine",
year="1984",
author="Thornton, R. and Brown, G. A. and Higenbottam, C.",
volume="55",
number="8",
pages="746-750",
abstract="The energy expenditure of Army Air Corps and Royal Air Force pilots has been measured during flight in Gazelle and Puma helicopters respectively. Heart rates were also recorded. The results were compared with resting values obtained in the crewroom before flight, and confirmed the findings of other authors that the energy cost of flying helicopters in level flight is about 50% higher than that of sitting at rest.<p /><p>Language: en</p>",
language="en",
issn="0095-6562",
doi="",
url="http://dx.doi.org/"
}