Effect of hammer mass on upper extremity joint moments

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• 作者：Nilanthy Balendra^a ; Joseph E. Langenderfer^b ; ^{j.langend@cmich.edu}
• 关键词：Inverse-dynamics ; Kinetics
• 刊名：Applied Ergonomics
• 出版年：2017
• 出版时间：April 2017
• 年：2017
• 卷：60
• 期：Complete
• 页码：231-239
• 全文大小：2396 K
• 卷排序：60

文摘

Larger hammers increase the ability of humans to perform work, but potentially increase musculoskeletal loads. Ten subjects drove nails with 1 and 2 lb hammers. Intersegmental moments at shoulder, elbow and wrist were calculated with an upper-extremity musculoskeletal model. Moments at all upper-extremity joints were increased by 50-150% while using the larger hammer. Increases differed by joint, anatomical direction and significance of the effect.