| A comparison of cardiac strain among drillers of two different age groups in underground manual coal mines in India. | |
| | |
MedLine Citation:
|
PMID: 18971575 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
Cardiac strain was evaluated in terms of working heart rate (WHR), relative cardiac cost (RCC), net cardiac cost (NCC) and other recovery indices among six younger (mean age 34.2 +/- 2.7 yr) and sixteen older (mean age 48.9 +/- 5.4 yr) drillers working in a manual underground coal mine over two spells of work. The mean WHR was within the range of 117-132 beats / min with corresponding mean relative cardiac cost between 44-48% of heart rate reserve for the younger group and 53-55% for their older counterparts. The mean NCC was above 50 beats/min for both age groups. It was seen that the workers surpassed the recommended limits of cardiac strain indices. The intensity of workload indicates the job to be "heavy" to "extremely heavy" in accordance with the heaviness scales based on WHR, NCC and recovery heart rates. Heat stress prevailing in the workplace in terms of effective temperature (ET) and wet bulb globe temperature (WBGT), was above the recommended limits as per the guidelines proposed by WHO and ACGIH. High physiological demands of the job which requires predominate static muscular exertions coupled with high heat stress were found to hinder the recovery process and may prove deleterious particularly for the older workers. Therefore, in the present context, the need of ergonomic interventions for job organization and quick reparation of environmental condition are strongly indicted. |
| | |
Authors:
|
Ratnadeep Saha; Netai Chandra Dey; Amalendu Samanta; Rajib Biswas |
Related Documents
:
|
8157295 - Frusemide--digitalis interaction on experimental model. 1638455 - Psychiatric morbidity during the early phase of coronary care for myocardial infarction... 2030505 - Adequate crystalloid resuscitation restores but fails to maintain the active hepatocell... 16563595 - Adherence to cpr guidelines during perioperative cardiac arrest in a developing country. 15061475 - Retrospective comparison of 5 different methods for long-term ldl-apheresis in 20 patie... 21983365 - Prediction of time of death after withdrawal of life-sustaining treatment in potential ... |
Publication Detail:
|
Type: Comparative Study; Journal Article Date: 2008-10-30 |
Journal Detail:
|
Title: Journal of occupational health Volume: 50 ISSN: 1348-9585 ISO Abbreviation: J Occup Health Publication Date: 2008 |
Date Detail:
|
Created Date: 2008-12-17 Completed Date: 2009-02-11 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 9616320 Medline TA: J Occup Health Country: Japan |
Other Details:
|
Languages: eng Pagination: 512-20 Citation Subset: IM |
Affiliation:
|
Department of Physiology, Universal College of Medical Sciences, Nepal. rdsaha@yahoo.com |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Adult Age Factors Body Mass Index Cardiovascular Physiological Phenomena Coal Mining / instrumentation, manpower* Environmental Monitoring Heart Rate / physiology* Heat Stress Disorders / physiopathology* Humans India Lifting / adverse effects Male Middle Aged Mining / manpower* Monitoring, Physiologic* Physical Exertion / physiology* Sampling Studies Stress, Physiological / physiology* Task Performance and Analysis Work / physiology* Work Capacity Evaluation Workload* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Takotsubo cardiomyopathy with marked ST-segment elevation and electrical alternans complicated with ...
Next Document: Efficacy of short-term cyclosporine treatment to control psoriasis-related events during efalizumab ...