Skip directly to search Skip directly to A to Z list Skip directly to page options Skip directly to site content

NIOSHTIC-2 Publications Search

Search Results

Design of work-rest schedule for hot jobs.

Authors
Kamon-E
Source
NIOSH 1980 Dec; :71-95
Link
NIOSHTIC No.
00168714
Abstract
Young adults averaging 23 years of age were tested to design work and rest schedules for hot job conditions according to the cumulative circulatory strain exerted by the combined stress induced by work, walking with and without carrying objects and heat. Work and rest periods for walking and walking combined with carrying were established for 30, 40, 60 and 75 percent maximum oxygen consumption, with the work being carried out at neutral, warm and humid, and hot and dry ambient conditions. The rest periods following each work session were kept the same as during the corresponding work conditions, that is, warm, hot or neutral. The cumulative muscular strain exerted by muscular work and heat, in terms of the increase in heart rate was used to establish the length of the work periods, and the sum of the heart rates was expressed in terms of percent maximum oxygen consumption. An efficient rotation between workers was applied to establish the work periods. The pattern recorded for heart rate and the rectal temperature of the test subjects demonstrated that the test method was satisfactory for hot and dry working conditions, regardless of the conditions prevailing during the resting period. On the contrary, for the warm and humid conditions, the procedure was satisfactory only when resting occurred in neutral ambient conditions. The author concludes that the cumulative stresses of work and heat can be used to establish work and rest schedules for hot jobs.
Keywords
Thermal-effects; Heat-stress; Physiological-testing; Hot-environments; Muscle-function; Hemodynamics; Body-temperature; Energy-metabolism; Occupational-health
Publication Date
19801201
Document Type
Conference/Symposia Proceedings
Editors
Dukes-Dobos-FN; Henschel-A
Fiscal Year
1981
NTIS Accession No.
NTIS Price
Identifying No.
(NIOSH) 81-108
Source Name
Proceedings of a NIOSH Workshop on Recommended Heat Stress Standards, September 17-19, 1979, Cincinnati, Ohio
State
OH
TOP