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11. |
Equal Opportunity for a Geriatric Labor ForceSome Observations on Marine Surveying |
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Journal of Occupational Medicine,
Volume 25,
Issue 3,
1983,
Page 211-214
Roy Shephard,
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摘要:
The issue of mandatory retirement is reviewed in the context of a physically arduous task with major implications for the safety of both life and property (marine surveying). The main physiological factor limiting the inspections of vessels and cargo is the individual's aerobic power. Over an eight-hour shift, the net energy expenditure can amount to 4 megajoule (MJ), equivalent to 37% of aerobic power for an unfit 65-year-old employee. It is argued that the majority of marine surveyors should retire at about the age of 65 years, on grounds of (1) heavy physical demand, (2) ensuring continuity of operations through the recruitment of young, formally trained employees, and (3) public safety in the face of growing time pressures and a rapidly changing technology. Nevertheless, careful physiological tests may distinguish exceptional individuals who can continue with their work for a longer period.
ISSN:0096-1736
出版商:OVID
年代:1983
数据来源: OVID
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12. |
Heart Rates in Fire Fighters Using Light and Heavy Breathing EquipmentSimilar Near‐Maximal Exertion in Response to Multiple Work Load Conditions |
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Journal of Occupational Medicine,
Volume 25,
Issue 3,
1983,
Page 215-218
James Manning,
Thomas Griggs,
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摘要:
Intense exertion is an occupational hazard inherent to fire fighting. This study was designed to look at the exertion levels that fire fighters attain during a fire fighting exercise when using (1) no self-contained breathing apparatus (SCBA), (2) light SCBA, and (3) heavy SCBA. Exertion levels were measured as a function of the heart rate increase relative to the maximum predicted heart rate determined by a standard treadmill exercise test. Five fire fighters wore electrocardiographic monitors during a routine fire fighting exercise. Heart rates increased rapidly to 70% to 80% of maximum within the first minute and then plateaued at 90% to 100% until the attack on the fire was completed. There was no significant difference between exertion levels when using no SCBA, light SCBA, and heavy SCBA (split-plot analysis of variance, p > .25). These results suggest that fire fighters attain an intense level of physical activity quickly and maintain that level as long as they are actively engaged in fighting fire. These results also suggest that regardless of the weight of the SCBA, if employed, fire fighters exert themselves from 85% to 100% of their maximum and adjust their work output to maintain that near-maximal level.
ISSN:0096-1736
出版商:OVID
年代:1983
数据来源: OVID
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13. |
Mortality Among Workers From a Plastics Producing PlantA Matched Case‐Control Study Nested in a Retrospective Cohort Study |
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Journal of Occupational Medicine,
Volume 25,
Issue 3,
1983,
Page 219-230
Gary Marsh,
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摘要:
Earlier proportional mortality studies of workers in a plastics producing plant in Massachusetts indicated excess mortality from certain digestive and genitourinary cancers. To more definitively examine mortality among these workers a retrospective cohort study was conducted for 2,490 male wage earners who worked at least one year during 1949–1966. Vital status was determined as of Dec. 31, 1976, for 99.7% of the cohort and death certificates were obtained for 98.0% of 603 observed deaths. Comparison with the local county white males revealed a slight excess in digestive system cancer (standard mortality ratio [SMR] = 101.8] and a statistically significant excess (p<.05) in genitourinary cancer (SMR = 153.6). A relationship was suggested between cancer of the rectum, liver, and pancreas and both the duration and interval from onset of exposure. A secondary matched case-control study was conducted to determine if particular jobs or work areas were related to the excesses found in the primary study. This analysis did not support the hypothesis that digestive or genitourinary cancer was related to a general plant exposure or date of hire. Possible associations warranting continued surveillance were found between rectal cancer and cellulose nitrate production and between prostatic cancer and polystyrene processing. Digestive and genitourinary cancers other than rectal and prostate were not related to employment in any of 21 occupational exposure categories examined.
ISSN:0096-1736
出版商:OVID
年代:1983
数据来源: OVID
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14. |
A Method for Repeated Evaluation of Pulmonary Performance in Unanesthetized Unrestrained Guinea Pigs and Its Application to Detect Effects of Sulfuric Acid Mist Inhalation |
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Journal of Occupational Medicine,
Volume 25,
Issue 3,
1983,
Page 231-231
Thomas Lincoln,
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ISSN:0096-1736
出版商:OVID
年代:1983
数据来源: OVID
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15. |
Distribution and Retention of Benzo (a) Pyrene in Rats after Inhalation |
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Journal of Occupational Medicine,
Volume 25,
Issue 3,
1983,
Page 232-232
Thomas Lincoln,
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PDF (104KB)
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ISSN:0096-1736
出版商:OVID
年代:1983
数据来源: OVID
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16. |
Results of AOMA Member Survey on Medical Care Cost Containment |
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Journal of Occupational Medicine,
Volume 25,
Issue 3,
1983,
Page 233-237
H. Belk,
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PDF (264KB)
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ISSN:0096-1736
出版商:OVID
年代:1983
数据来源: OVID
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