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. 2023 Jun 20;45(6):3449–3473. doi: 10.1007/s11357-023-00844-z

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© The Author(s) 2023

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Fig. 2 — Task groups used for testing upper limb motor function. There were two major groups of tasks: 1) tasks involving a part of the upper limb, e.g., finger tapping or elbow flexion, and 2) tasks involving multiple parts of the upper limb, such as writing/drawing tests or Purdue Pegboard Test (PPT)