Orchard evaluation of ergonomically modified apple bucket.
Orchard evaluation of ergonomically modified apple bucket.
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DOI：
10.1300/j096v11n03_10
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发表时间：
2006-01-01
影响因子：
2.4
通讯作者：
May, John J
中科院分区：
文献类型：
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作者：
Earle-Richardson, Giulia;Jenkins, Paul L;May, John J
背景：虽然初步的实验室测试表明，髋带可以减轻与肌肉骨骼劳损相关的背部、颈部和肩部的负荷，但需要进行果园试验，以更现实地评估有效性和可接受性。目的：从工人接受度、工人生产率和背部和肩部一天的肌肉疲劳三个方面评估髋带的有效性。方法：96名纽约苹果采摘工人被随机分配使用干预髋带或安慰剂腰带，为期一周。在第二周，所有工人都改变了工作条件。受试者在每个周末接受访谈，以确定干预的接受度。审查了雇主的记录，以确定每天采摘的蒲式耳。受试者还在每周的一个工作日开始和结束时进行肌肉疲劳测试。结果：91%的受试者支持介入髋部腰带。与安慰剂(8.8蒲式耳/小时vs.8.89蒲式耳/小时)相比，使用干预措施并没有明显降低采摘速度(每小时蒲式耳)。这两种情况都明显快于常规设备条件(8.13 BU/小时)。干预前后单日肌肉疲劳无显著差异。结论：该腰带对工人来说是可以接受的，不会影响生产力。然而，使用一天的强度测试并不能证明预期的人体工程学益处。
BACKGROUND: While preliminary laboratory tests indicate that a hip belt reduces the load on the back, neck and shoulders associated with musculoskeletal strain, an orchard trial is needed to more realistically assess both effectiveness and acceptability.OBJECTIVE: to evaluate the hip belt's effectiveness in three areas: worker acceptance, worker productivity, and one-day muscle fatigue of the back and shoulder.METHODS: Ninety-six New York apple harvest workers were randomly assigned to use the intervention hip belt or placebo belt for one week. In a second week all workers switched conditions. Subjects were interviewed at the end of each week to ascertain intervention acceptance. Employer records were reviewed to determine bushels picked per day. Subjects also underwent muscle fatigue testing at the beginning and again at the end of one workday during each week.RESULTS: Ninety-one percent of the subjects favored the intervention hip belt. Use of the intervention did not appreciably slow picking speed (bushels per hour) as compared to placebo (8.8 bu/ hr vs. 8.89 bu/hr). Both were significantly faster than the regular equipment condition (8.13 bu/hr). No significant differences in one-day muscle fatigue were found with intervention use.CONCLUSIONS: The belt was acceptable to the workers and did not hinder productivity. However, the anticipated ergonomic benefits were not demonstrable using one-day strength testing.