Applied Physiology, Nutrition, and Metabolism, Ahead of Print.
Iron deficiency is the most common nutrient deficiency in the world, affecting roughly 40% of women in nonindustrialized countries. Iron is the essential element in hemoglobin, the major carrier of blood oxygen and oxidative metabolism that supports physical and cognitive performance. The relationship between iron and physical work capacity suggests that iron deficient individuals could experience reduced work output. Participants were 138 experienced tea pluckers aged 18–55 years from the Panighatta Tea Estate in Darjeeling District of northern West Bengal, India. Hemoglobin, serum ferritin, and soluble transferrin receptor were measured from venous blood. Energy expenditure was estimated from accelerometry and heart rate, and plucking productivity was measured as amount of tea plucked during the morning work session when temperature and rainfall conditions are optimal. At a given level of energy expenditure, iron deficient, anemic, and iron deficient anemic women plucked less tea during a 3-h period. The results warrant further research as to whether interventions providing supplemental iron might improve worker productivity and work efficiency. Further study should examine evidence of economic incentives for policies and programs targeting nutritional deficiencies. Novelty Anemia predicts up to 2.02 kg (9.1%) less tea plucked per 3 h, or 4.0% lower wage per 3 h, compared with nonanemic women, controlling for physical effort. An increase of 1.0 g/L in hemoglobin concentration predicts 0.71 kg (3.3%) more tea plucked over 3 h. An increase of 1.0 g/L in hemoglobin concentration predicts a 1.6% wage increase.

中文翻译：

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铁状态与工人生产力有关，与印度茶园工人的体力劳动无关。

应用生理学、营养学和代谢，提前出版。
缺铁是世界上最常见的营养素缺乏症，影响了非工业化国家约 40% 的女性。铁是血红蛋白的基本元素，是血氧和氧化代谢的主要载体，支持身体和认知能力。铁与体力工作能力之间的关系表明，缺铁的人可能会经历工作产出减少。参与者是来自印度西孟加拉邦北部大吉岭地区 Panighatta 茶园的 138 名年龄在 18-55 岁之间的经验丰富的采茶工。从静脉血测量血红蛋白、血清铁蛋白和可溶性转铁蛋白受体。根据加速度计和心率估计能量消耗，采摘效率是根据早上工作期间温度和降雨条件最佳时采摘的茶量来衡量的。在给定的能量消耗水平下，缺铁、贫血和缺铁性贫血的妇女在 3 小时内采茶较少。结果值得进一步研究，提供补充铁的干预措施是否可以提高工人的生产力和工作效率。进一步的研究应检查针对营养缺乏的政策和计划的经济激励证据。与非贫血女性相比，在控制体力劳动的情况下，新奇性贫血预测每 3 小时采茶量最多减少 2.02 公斤（9.1%），或每 3 小时工资减少 4.0%。血红蛋白浓度每增加 1.0 克/升，预示 3 小时内采茶量会增加 0.71 公斤（3.3%）。增加1。