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. 2018 Aug;236(8):2165-2172.
doi: 10.1007/s00221-018-5294-3. Epub 2018 May 22.

Peg-manipulation Capabilities of Middle-Aged Adults Have a Greater Influence on Pegboard Times Than Those of Young and Old Adults

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Peg-manipulation Capabilities of Middle-Aged Adults Have a Greater Influence on Pegboard Times Than Those of Young and Old Adults

Awad M Almuklass et al. Exp Brain Res. .

Abstract

Declines in manual dexterity are frequently quantified as the time it takes to complete the grooved pegboard test. The test requires individuals to manipulate 25 pegs, one at a time, by removing them from a well and inserting them into a prescribed hole. The manipulation of each peg involves four phases: selection, transport, insertion, and return. The purpose of our study was to compare the times to complete the four phases of peg manipulation and the forces applied to the pegboard during peg insertion as young, middle-aged, and old adults performed the grooved pegboard test. The relative significance of the peg-manipulation attributes for 30 young (24.0 ± 4.4 years), 15 middle-aged (46.5 ± 6.5 years), and 15 old (70.4 ± 4.0 years) adults was assessed with a multiple-regression analysis. The grooved pegboard test was performed on a force plate. Pegboard times for the old adults (81 ± 17 s) were longer than those for young (56 ± 7 s) and middle-aged (58 ± 11 s) adults. Regression analysis indicated that the explanatory variables for the pegboard times of young (R2 = 0.33) and middle-aged (R2 = 0.78) adults were the times for the peg insertion and return phases, whereas the predictors for old adults (R2 = 0.49) were the times for the peg selection and transport phases. The relative influence of peg-manipulation capabilities on a pegboard test of manual dexterity was greater for middle-aged adults than for young and old adults.

Keywords: Aging; Grooved pegboard test; Manual dexterity.

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