The purpose of this investigation was to determine the effect of prolonged seated work, lift task, age and sex on normalized lumbar angles, thoracic angles, perceived effort and duration of lifts. A total of 17 young and 17 mature participants were recruited with an average (standard deviation) age of 23.8 (5.0) years and 63.7 (3.9) years, respectively. Participants completed 3 different floor to knuckle lifts before and following 90 min of seated work. The lifts included; (i) 7 kg symmetrical, (ii) 4.5 kg symmetrical and (iii) 4.5 kg asymmetrical. Prolonged seated work and age interacted to affect normalized peak lumbar angles (p = 0.0469) where older adults adopted 56(15)% flexion after seated work compared to 67(16)% among younger adults. Older adults took significantly longer to complete the lifting tasks compared to younger adults while age did not affect perceived effort across lifting tasks. Older workers may require age specific interventions given age specific responses.

这项研究的目的是确定长时间坐着的工作，提升任务，年龄和性别对标准化腰椎角度，胸廓角度，感知的努力和提升时间的影响。总共招募了17位年轻参与者和17位成熟参与者，其平均（标准差）年龄分别为23.8（5.0）岁和63.7（3.9）岁。参加者在坐着工作90分钟之前和之后，完成了3个不同的地板到指关节的升降机。升降机包括；（i）7公斤对称，（ii）4.5公斤对称，（iii）4.5公斤不对称。长时间坐着工作和年龄会相互作用，影响正常的腰椎顶角（p = 0.0469），其中老年人在坐下后屈曲率为56（15）％，而年轻人为67（16）％。与年轻人相比，年长的成年人完成举重任务所需的时间明显更长，而年龄并没有影响人们在举重任务中的感知努力。给定针对特定年龄的应对措施，老年工人可能需要针对特定​​年龄的干预措施。