Age-related changes in multi-finger interactions in adults during maximum voluntary finger force production tasks
Language: 
English
Abstract: 

This study aimed to continue our characterization of finger strength and multi-finger interactions across the lifespan to include those in their 60s and older. Building on our previous study of children, we examined young and elderly adults during isometric finger flexion and extension tasks. Sixteen young and 16 elderly, gender-matched participants produced maximum force using either a single finger or all four fingers in flexion and extension. The maximum voluntary finger force (MVF), the percentage contributions of individual finger forces to the sum of individual finger forces during four-finger MVF task (force sharing), and the non-task finger forces during a task finger MVF task (force enslaving), were computed as dependent variables. Force enslaving during finger extension was greater than during flexion in both young and elderly groups. The flexion-extension difference was greater in the elderly than the young adult group. The greater independency in flexion may result from more frequent use of finger flexion in everyday manipulation tasks. The non-task fingers closer to a task finger produced greater enslaving force than non-task fingers farther from the task finger. The force sharing pattern was not different between age groups. Our findings suggest that finger strength decreases over the aging process, finger independency for flexion increases throughout development, and force sharing pattern remains constant across the lifespan.

Author(s): 
Oliveira, Marcio A.
Hsu, Jeffrey
Park, Jaebum
Clark, Jane E.
Shim, Jae Kun
Item Type: 
Journal Article
Publication Title: 
Human Movement Science
Journal Abbreviation: 
Hum Mov Sci
Publication Date: 
2008-10
Publication Year: 
2008
Pages: 
714-727
Volume: 
27
Issue: 
5
ISSN: 
0167-9457
DOI: 
10.1016/j.humov.2008.04.005
Library Catalog: 
NCBI Published Medical (?)
Extra: 
PMID: 18762348 PMCID: PMC2637388

Turabian/Chicago Citation

Marcio A. Oliveira, Jeffrey Hsu, Jaebum Park, Jane E. Clark and Jae Kun Shim. 2008-10. "Age-related changes in multi-finger interactions in adults during maximum voluntary finger force production tasks." Human Movement Science 27: 5: 714-727. 10.1016/j.humov.2008.04.005.

Wikipedia Citation

<ref> {{Cite journal | doi = 10.1016/j.humov.2008.04.005 | issn = 0167-9457 | volume = 27 | pages = 714-727 | last = Oliveira | first = Marcio A. | coauthors = Hsu, Jeffrey, Park, Jaebum, Clark, Jane E., Shim, Jae Kun | title = Age-related changes in multi-finger interactions in adults during maximum voluntary finger force production tasks | journal = Human Movement Science | date = 2008-10 | pmid = | pmc = }} </ref>