Physical exertion and working efficiency of reforestation workers
نویسندگان
چکیده
منابع مشابه
Physical exertion and working efficiency of reforestation workers
BACKGROUND The purpose of this study was to quantify the physical exertion during tree planting work and to examine the relationships between exertion, task efficiency, and productivity. METHODS Heart rate (HR) was monitored on 34 tree planters while they worked. HR data was collected for a complete working day on 19 subjects and for shorter periods of time on 15 subjects. Video of work tasks...
متن کاملInfluence of a physical exertion on the workers' health state.
PURPOSE The health state of the workers employed at hard and very hard workplaces (on the ground of an energy expenditure measurement) has been presented in this report. MATERIAL AND METHODS The morbidity of these workers was compared with the morbidity rates of two groups: the persons employed at a factory management and the workers performing light and moderate physical work. The number dat...
متن کاملdetermination of some physical and mechanical properties red bean
چکیده: در این تحقیق، برخی خواص فیزیکی و مکانیکی لوبیا قرمز به-صورت تابعی از محتوی رطوبت بررسی شد. نتایج نشان داد که رطوبت بر خواص فیزیکی لوبیا قرمز شامل طول، عرض، ضخامت، قطر متوسط هندسی، قطر متوسط حسابی، سطح تصویر شده، حجم، چگالی توده، تخلخل، وزن هزار دانه و زاویه ی استقرار استاتیکی در سطح احتمال 1 درصد اثر معنی داری دارد. به طوری که با افزایش رطوبت از 54/7 به 12 درصد بر پایه خشک طول، عرض، ضخام...
15 صفحه اولWorking hours and mental and physical fatigue in Japanese workers.
BACKGROUND Establishing a threshold number of working hours is very important when making recommendations to protect people from the potentially harmful health effects caused by long working hours. AIM To clarify the influence of working hours on both mental and physical symptoms of fatigue and use the data obtained to determine permissible working hours. METHODS Cross-sectional survey of m...
متن کاملPhysical exertion may cause high troponin levels.
It is important to measure troponin levels when acute myocardial infarct is suspected. Many other factors that affect the heart can cause an increase in troponin levels, for example extreme physical exertion. Recent studies have shown that more normal physical activity can also lead to increase in troponin levels in healthy individuals.
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ژورنال
عنوان ژورنال: Journal of Occupational Medicine and Toxicology
سال: 2011
ISSN: 1745-6673
DOI: 10.1186/1745-6673-6-20