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- W2113255962 abstract "<b><i>Background:</i></b> Slowing of motor movements in human aging is a well-known occurrence, but its biologic basis is poorly understood. Reliable quantitation may refine observations of this phenomenon to better aid research on this entity. <b><i>Methods:</i></b> A panel equipped with timing sensors under computer control was used to measure upper extremity movement times in two groups of healthy individuals: adults younger than 60 years of age (n = 56; range, 18–58 years) and adults older than 60 years of age (n = 38; range, 61–94 years). <b><i>Results:</i></b> Fine motor performance was better in the dominant hand (<i>p</i> = 0.0007) regardless of age. Adult and aged groups differed on two basic timing measures, which reflect coarse motor and fine motor performance (<i>p</i> < 0.0001). There were no gender differences on either measure. There was a strong effect of task difficulty with age on coarse motor (<i>p</i> < 0.01) and fine motor (<i>p</i> < 0.0001) measures. The fine motor measure of hand performance in healthy individuals correlated in a nonlinear fashion with age for more difficult tasks (<i>r</i><sup>2</sup> = 0.63) but showed a simple linear relation for less-demanding tasks (<i>r</i><sup>2</sup> = 0.5). <b><i>Conclusion:</i></b> This technique sensitively detects age-related motor performance decline in humans. There may be a critical period in late midlife when fine motor performance decline either begins or abruptly worsens." @default.
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- W2113255962 date "1999-10-22" @default.
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- W2113255962 title "Critical decline in fine motor hand movements in human aging" @default.
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- W2113255962 doi "https://doi.org/10.1212/wnl.53.7.1458" @default.
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