Spurr G B, Barac-Nieto M, Maksud M G
Br J Ind Med. 1977 May;34(2):137-41. doi: 10.1136/oem.34.2.137.
Productivity (metric tons (tonnes)/day), efficiency (kg cane cut/litre Vo2), and effort (percent Vo2 max sustained during an 8-hour workday) have been measured in 54 Colombian sugar cane cutters. In workers who sustained less than 40% Vo2 max during the workday, the effort expended was related to productivity (4 = 0-71) but efficiency and productivity were not significantly correlated. In 16 workers sustaining a greater than 40% Vo2 max during the workday, productivity and effort were not related and efficiency was significantly reduced. Subjects using less than 40% Vo2 max were divided into good, average and poor producers and compared with the men with low efficiencies. In general, these inefficient men had the anthropometric and physical fitness characteristics of low productivity workers (smaller stature, weight and Vo2 max). However, the frequency of good, average, and poor cutters in the inefficient group did not differ from that of the men expending less than 40% of their maximum effort nor was their average productivity different. No obvious reasons for the differences in efficiency and effort of these men were found.
对54名哥伦比亚甘蔗砍伐工人的生产力（公吨/天）、效率（每升耗氧量砍伐的甘蔗千克数）和劳动强度（8小时工作日期间维持的最大耗氧量百分比）进行了测量。在工作日期间维持最大耗氧量低于40%的工人中，所消耗的劳动强度与生产力相关（r = 0.71），但效率与生产力无显著相关性。在工作日期间维持最大耗氧量高于40%的16名工人中，生产力与劳动强度无关，效率显著降低。将最大耗氧量低于40%的受试者分为高产、中产和低产组，并与低效率的男性进行比较。总体而言，这些低效率男性具有低生产力工人的人体测量学和身体素质特征（身材较矮、体重较轻、最大耗氧量较低）。然而，低效率组中高产、中产和低产砍伐工人的频率与最大努力程度低于40%的男性并无差异，他们的平均生产力也没有不同。未发现这些男性在效率和劳动强度方面存在差异的明显原因。
