Subjective Evaluation of the Manual Dexterity and Fingertip Movement Ability for Aging Workers

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  • MAKIZUKA Tadao
    Department of Management and Business, Faculty of Humanity Oriented Science and Engineering, Kinki University
  • KUMASHIRO Masaharu
    The Association for Preventive Medicine of Japan

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  • 中高齢労働者の主観的器用さと指先運動能
  • チュウ コウレイ ロウドウシャ ノ シュカンテキ キヨウ サ ト ユビサキ ウンドウノウ

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Abstract

We measured the fingertip movement ability for 0～10, 10～20 and 20～30 sec. on the third digit of the right hand using a tapping tester with 351 non-office workers as subjects, mostly males aged 50～69. We also conducted interviews concerning the manual dexterity of the test subjects during their boyhood, and their middle-aged and older period, based on a self-assessment. There was a significant relation between tapping values and ages, but the correlation coefficient was not strong. This suggests the fingertip movement ability for non-office laborers 50～69 years old was not influenced by age. We conducted a cluster analysis of the tapping scores and extracted four clusters. As a result, four types ranging from groups with high scores to low scores were clearly identified. Further, an ANOVA was conducted for tapping scores by self-assessment, and there were significant scores for the 0～10 sec. range and the 10～20 sec. range (p＜0.05). This suggests that the manual dexterity level based on self-assessment can be estimated to some extent by the tapping score. Further, 48.7% of the subjects answered that manual dexterity based on self-assessment changed by middle-to old age, and 84.8% of those answered that it declined.

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