This study investigated kinematic and perceptual differences between the sexes in a heavy lifting and pulling task. A 20 kg box was lifted from floor to chest height, and a 70 kg mannequin pulled across 20m. The effect of height, mass and average grip strength on kinematics and perceived workload was examined in 42 (19 females, 23 males) healthy individuals. A univariate linear regression analysis found females lifted with greater lumbar extension compared to males (p < 0.001), and adopted more hip (p = 0.006) and knee flexion (p = 0.036) in the pulling task. Females reported a greater perceived workload in both tasks (p < 0.001). After the multivariable analysis, only grip strength remained significant for perceived workload in the lift (p = 0.04), and height for knee flexion in the pull (p = 0.009). This highlights that height and strength are important factors driving kinematics and perceived workload. Clinicians may consider these factors in heavy manual tasks, more so than sex.

这项研究调查了在繁重的提拉任务中两性之间的运动学和感知差异。一个 20 公斤的箱子从地板上抬到胸部的高度，一个 70 公斤的人体模型被拉过 20 米。在 42 名（19 名女性，23 名男性）健康个体中检查了身高、体重和平均握力对运动学和感知工作量的影响。单变量线性回归分析发现，与男性相比，女性的腰椎伸展更大（p < 0.001），并且在拉力任务中采用更多的髋关节（p = 0.006）和膝关节屈曲（p = 0.036）。女性在两项任务中都报告了更大的感知工作量（p < 0.001）。在多变量分析之后，只有握力对于提升时感知的工作量（p = 0.04）和拉动时膝关节屈曲的高度（p = 0.009）仍然显着。这突出表明高度和力量是驱动运动学和感知工作负荷的重要因素。临床医生可能会在繁重的体力任务中考虑这些因素，而不是性。