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标题：Comparative determination of physical stress and strain on milkers in milking parlours on dairy farms in Upper Austria, using ECG, an activity sensor and spirometer
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作者：Magdalena Mayrhofer ; Elisabeth Quendler ; Bernhard Prinz 等
期刊名称：Annals of Agricultural and Environmental Medicine
印刷版ISSN：1232-1966
电子版ISSN：1898-2263
出版年度：2017
卷号：24
期号：2
页码：294-298
DOI：10.5604/12321966.1235179
出版社：Institute of Agricultural Medicine in Lublin
摘要：To-date, the impact of modern milking parlors in dairy farming on physical strain has not been the subject of many studies.Therefore, this case study aims to record and evaluate the physical strain during the entire milking process, including theoxygen consumption (VO2), heart rate (HR) and metabolic rate (WkJ, Watt) of milkers. The recording was conducted with aportable respiratory gas analysis system and an ECG and activity sensor on 4 dairy farms in Austria. Eight subjects aged from45–52 years, with a mean age 50±2.4 SD, participated and the data were recorded during the milking process in 2 types ofmilking parlours. For assessment, the entire milking process was divided into preparation, milking and follow-up work. Theentire milking process was performed with an average oxygen consumption of 46.5 l/h and a heart rate of 98 bpm, whichis below the anaerobic threshold; whereas in the preparation and follow-up work, this threshold was exceeded. Generally,during the milking process, a moderate physical strain (32.4%) and a balanced metabolic rate (143 watt/m2) were determined.The physical strain in female milkers was 9.2% higher than in male milkers throughout the entire process. Reduction ofphysical strain can be achieved through additional breaks, reduced work speed, division of labour and technical devices.
关键词：physical strain; milking parlor; heart rate; oxygen consumption