Validity and reliability of a novel device for bilateral upper extremity functional measurements

Chueh Ho Lin, Li Wei Chou, Shun Hwa Wei, Fu Kong Lieu, Shang Lin Chiang, Wen Hsu Sung

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


Background and objective: This study was designed to establish the validity and reliability of a new device that measures bilateral shoulder and elbow range of motion (ROM) and grip force performance in vivo. A further aim was to investigate the control of inter-limb grip force coordination during isometric force-maintenance tasks. Validity of the ROM and grip force measurements was examined using a validated clinical goniometer and standard weights. Subjects: Twenty-one healthy adults (six female, 15 male mean. ±. standard deviation age. = 23.05. ± 3.51) were recruited for this study. Design: All subjects were asked to perform tests to evaluate the validity and reliability of ROM, grip force maximum voluntary contraction (MVC) and coordination control measurements. Results: The ROM and grip force measurements were linearly correlated with criterion standards. For reliability testing, all of the intraclass correlation coefficient values were >0.99. The inter-limb grip force coordination control task showed that the force modulation timing during dominant-to-non-dominant hand transition was longer than the non-dominant-to-dominant hand transition (p< 0.05). Conclusions: These results demonstrate that this device is valid and reliable when used to measure shoulder and elbow ROM and grip force of both hands. Isometric force-maintenance tasks also indicated changes in inter-limb grip force control.

Original languageEnglish
Pages (from-to)315-323
Number of pages9
JournalComputer Methods and Programs in Biomedicine
Issue number3
Publication statusPublished - May 2014
Externally publishedYes


  • Grip force
  • Motor control
  • Range of motion
  • Upper extremity

ASJC Scopus subject areas

  • Software
  • Computer Science Applications
  • Health Informatics


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