Mittal M, Malik S L
Department of Anthropology, University of Delhi, India.
Ergonomics. 1991 Jan;34(1):103-8. doi: 10.1080/00140139108967292.
Three lift-postures, back straight and knees bent, back bent and knees straight and squatting were evaluated biomechanically based on data from 100 Koli female labourers, when lifting loads from the floor to hold them at knee height. The maximum weight was lifted with the back bent and the knees straight which is a posture commonly used by Indian labourers for lifting a load. Squatting (a posture used by Indians for performing household chores) produced the least physical strain in terms of moment and moment ratio (moment per kilogramme of load lifted). Consequently, squatting was found to be the best posture for lifting a load, specifically for the Indian labourers who are accustomed to squatting when working.
基于100名科利族女性劳动者的数据，对三种提举姿势进行了生物力学评估，这三种姿势分别是背部挺直且膝盖弯曲、背部弯曲且膝盖伸直以及下蹲姿势，她们从地面提起重物并保持在膝盖高度。背部弯曲且膝盖伸直时能提起的最大重量，这是印度劳动者提举重物时常用的姿势。下蹲（印度人做家务时使用的姿势）在力矩和力矩比（每提起一公斤重物的力矩）方面产生的身体压力最小。因此，发现下蹲是提举重物的最佳姿势，特别是对于习惯在工作时下蹲的印度劳动者而言。
