Relationship Between Hand Grip Strength, Cognition, And Hand Dexterity In Older Adults: A Pilot Study
Keywords:older adults, grip strength, cognition and hand dexterity
Background and Objective: In older adults most important two factor is cognition and hand motor
functions, most noticeable in requiring much skill in fine motor activities. The normal process of aging
involves declines in cognitive and sensorimotor functions that affect performance of activities of daily
living. Dexterity measures help to detects early decline of hand function and it is necessary to quantify
manual dexterity of older adults not only design for work but also for the product and system daily activities
by older adults. Force control is necessary for grip because most daily object required acquired force for
movement not maximum force. While using large grip forces can lead to changes in the aging neuromotor
system other than impaired tactile afferent functioning. Some older adults may produce less stable isometric
forces with hand and arm muscles because of peripheral reorganization of their muscles. There is greater
connection between hand grip strength and cognition, the deterioration of cognitive function is a high risk of
AD. Therefore, handgrip strength considers as an early marker of cognitive decline and incident dementia.
Objective is to find relationship between hand grip strength, cognition, and hand dexterity in older adults.
Methodology: 16 subjects were recruited on the basis of selection criteria. Subjects evaluated cognition,
grip strength, and hand dexterity using outcome measures are MoCA, hand held dynamometer, and 9-hole
peg test respectively.
Results: Karl Pearson correlation were used for the statistical analysis. The result showed that moderate
correlation between cognition and grip strength for right and left side with p value 0.031 and r value 0.540,
and p = 0.40 and r = 0.517 respectively and weak correlation between cognition and hand dexterity for both
right and left with p value 0.162 and r = -.367 and p = .180, r= -.353 respectively.
Conclusion: the study shows moderate association between cognition and grip strength and weak correlation
between cognition and hand dexterity for both right and left side.
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