Strength training improves the tri-digit finger-pinch force control of older adults.

Abstract:

OBJECTIVE:To investigate the effect of unilateral upper-limb strength training on the finger-pinch force control of older men. DESIGN:Pretest and post-test 6-week intervention study. SETTING:Exercise science research laboratory. PARTICIPANTS:Eleven neurologically fit older men (age range, 70-80y). INTERVENTION:The strength training group (n=7) trained twice a week for 6 weeks, performing dumbbell bicep curls, wrist flexions, and wrists extensions, while the control group subjects (n=4) maintained their normal activities. MAIN OUTCOME MEASURES:Changes in force variability, targeting error, peak power frequency, proportional power, sample entropy, digit force sharing, and coupling relations were assessed during a series of finger-pinch tasks. These tasks involved maintaining a constant or sinusoidal force output at 20% and 40% of each subject's maximum voluntary contraction. All participants performed the finger-pinch tasks with both the preferred and nonpreferred limbs. RESULTS:Analysis of covariance for between-group change scores indicated that the strength training group (trained limb) experienced significantly greater reductions in finger-pinch force variability and targeting error, as well as significantly greater increases in finger-pinch force, sample entropy, bicep curl, and wrist flexion strength than did the control group. CONCLUSIONS:A nonspecific upper-limb strength-training program may improve the finger-pinch force control of older men.

journal_name

Arch Phys Med Rehabil

authors

Keogh JW,Morrison S,Barrett R

doi

10.1016/j.apmr.2007.05.014

subject

Has Abstract

pub_date

2007-08-01 00:00:00

pages

1055-63

issue

8

eissn

0003-9993

issn

1532-821X

pii

S0003-9993(07)00357-7

journal_volume

88

pub_type

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