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Measurement of work metabolism.

Authors
Buskirk-ER; Nicholas-WC; Hodgeson-JL
Source
NIOSH 1975 May; :1-44
Link
NIOSHTIC No.
00069210
Abstract
Nine healthy men of normal weight between the ages of 21 and 56 performed several tasks in three hot but relatively dry environments. The tasks, walking on a treadmill, stepping, arm cranking, arm lifting, shoveling and isometric handgrip, were performed at two intensities in each environment until a steady state rectal temperature was observed. Several equations were developed using heart rate, weight, and minute ventilation to predict metabolic heat generated during work. Eight older men (ages 39 to 53) who were overweight were selected for walking on the treadmill under similar conditions, including a neutral environment. It is found that heat produced during work in hot environments can be estimated from measurement of weight, heart rate, and minute ventilation, but the equations developed for normal individuals should not be used to estimate the heat production of overweight men. (Contract No. 099-72-0070)
Keywords
NIOSH-Contract; Contract-099-72-0070; Thermal-environment; Physical-exercise; Heat-stress; Metabolism; Respiratory-functions; Cardiovascular-function
Publication Date
19750501
Document Type
Numbered Publication
Funding Type
Contract
Fiscal Year
1975
NTIS Accession No.
PB-274230
NTIS Price
A04
Identifying No.
(NIOSH) 77-135; Contract-099-72-0070
NIOSH Division
DLCD
Source Name
National Institute for Occupational Safety and Health
State
OH
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