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Influence of Select Modes of Load Carriage on Movement Biomechanics of Industrial Workers

机译：载荷载荷载作用对工业工人运动生物力学的影响

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A study was conducted with an aim to determine the changes of human lower limb biomechanics biomechanics while carrying loads in selective modes among industrial workers of India and to suggest the biomechanically efficient mode of load carriage. Industrial workers (n= 20) in the age range of 22 to 58 years were selected and asked to carry loads on head, across one shoulder and in hands. Qualisys Motion Capture System (Sweden), Kistler Force Plate (Switzerland) and Polar S810i HR monitor, Finland were used to record data. Heart rate was recorded at rest and during select modes of load carriage with 40% of individual body weight i.e. loads on head, shoulder and hand. Walking speed for head load, shoulder load and hand load were 4.19 ± 0.55 km.hr-~1, 4.09 ± 0.82 km.hr~(-1) and 3.94 ± 0.84 km.hr~(-1) respectively. Double limb support time while carrying loads has been found lowest in case of head mode (0.65 ± 0.46 s) followed by hand mode (0.67 ± 0.14 s) and shoulder mode (0.68 ± 0.06 s) of load carriage. There is a gradual increase in hip flexon from head to shoulder and hand load condition and gradual decrease in ground reaction force from head to shoulder and hand load conditions. Considering the changes in the physiological parameters along with the biomechanical parameters, head load was found to be more productive in comparison to shoulder and hand load modes. Results demonstrated a significant changes in kinetic and kinematic parameters of workers at selective load conditions. Findings would provide substantial input for designing work and work rest cycle for different industrial manual workforce.
机译：一项研究，目的进行，以确定人的下肢生物力学生物力学的变化，而在携带印度产业工人之间选择性模式负载，并建议负载托架的生物力学有效模式。在22至58岁的年龄范围产业工人（N = 20）选择并要求运送货物的头，跨越一个肩膀和手。 Qualisys运动捕捉系统（瑞典），奇石力板（瑞士）和极地S810i HR显示器，芬兰被用来记录数据。心脏速率被记录在休息和在负载托架的选定模式下与头，肩和手个体体重即负载的40％。对于头负载，肩负载和手负载行走速度分别为4.19±0.55 km.hr-〜1，4.09±0.82 km.hr〜（-1）和3.94±0.84 km.hr〜（-1）分别。而装载负荷双肢支持时间一直在随后手动模式（0.67±0.14 S）和负载托架的肩模式（0.68±0.06 S）头模式（0.65±0.46 S）的情况下发现最低。有从头部到肩和手负载条件和在地面反作用力从头部到肩和手负载条件逐渐减小的逐渐增加在髋FLEXON。考虑在与所述生物力学参数沿生理参数的变化，头负荷被发现是相比于肩部和手负载模式更高效。结果表明在选择性负载条件下的工人的动力学和运动学参数的显著变化。调查结果将用于设计工作，工作休息周期不同的工业手动劳动力提供了大量投入。

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