Reliability and relationships among handgrip strength, leg extensor strength and power, and balance in older men

Nathaniel D M Jenkins; Samuel L Buckner; Haley C Bergstrom; Kristen C Cochrane; Jacob A Goldsmith; Terry J Housh; Glen O Johnson; Richard J Schmidt; Joel T Cramer

doi:10.1016/j.exger.2014.07.007

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Reliability and relationships among handgrip strength, leg extensor strength and power, and balance in older men

Journal article

Peer reviewed

Reliability and relationships among handgrip strength, leg extensor strength and power, and balance in older men

Nathaniel D M Jenkins, Samuel L Buckner, Haley C Bergstrom, Kristen C Cochrane, Jacob A Goldsmith, Terry J Housh, Glen O Johnson, Richard J Schmidt and Joel T Cramer

Experimental gerontology, Vol.58, pp.47-50

10/2014

DOI: 10.1016/j.exger.2014.07.007

PMID: 25019471

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Abstract

To quantify the reliability of isometric leg extension torque (LEMVC), rate of torque development (LERTD), isometric handgrip force (HGMVC) and RFD (HGRFD), isokinetic leg extension torque and power at 1.05rad·s(-1) and 3.14rad·s(-1); and explore relationships among strength, power, and balance in older men. Sixteen older men completed 3 isometric handgrips, 3 isometric leg extensions, and 3 isokinetic leg extensions at 1.05rad·s(-1) and 3.14rad·s(-1) during two visits. Intraclass correlation coefficients (ICCs), ICC confidence intervals (95% CI), coefficients of variation (CVs), and Pearson correlation coefficients were calculated. LERTD demonstrated no reliability. The CVs for LERTD and HGRFD were ≤23.26%. HGMVC wasn't related to leg extension torque or power, or balance (r=0.14-0.47; p>0.05). However, moderate to strong relationships were found among isokinetic leg extension torque at 1.05rad·s(-1) and 3.14rad·s(-1), leg extension mean power at 1.05rad·s(-1), and functional reach (r=0.51-0.95; p≤0.05). LERTD and HGRFD weren't reliable and shouldn't be used as outcome variables in older men. Handgrip strength may not be an appropriate surrogate for lower body strength, power, or balance. Instead, perhaps handgrip strength should only be used to describe upper body strength or functionality, which may compliment isokinetic assessments of lower body strength, which were reliable and related to balance.

Age Factors

Aged

Aging

Geriatric Assessment - methods

Hand Strength

Humans

Isometric Contraction

Lower Extremity

Male

Muscle Strength Dynamometer

Muscle, Skeletal - physiology

Postural Balance

Predictive Value of Tests

Reproducibility of Results

Sex Factors

Torque

Upper Extremity

Details

Title: Subtitle: Reliability and relationships among handgrip strength, leg extensor strength and power, and balance in older men
Creators: Nathaniel D M Jenkins - University of Nebraska–Lincoln
Samuel L Buckner - University of Nebraska–Lincoln
Haley C Bergstrom - University of Nebraska–Lincoln
Kristen C Cochrane - University of Nebraska–Lincoln
Jacob A Goldsmith - University of Nebraska–Lincoln
Terry J Housh - University of Nebraska–Lincoln
Glen O Johnson - University of Nebraska–Lincoln
Richard J Schmidt - University of Nebraska–Lincoln
Joel T Cramer - University of Nebraska–Lincoln
Resource Type: Journal article
Publication Details: Experimental gerontology, Vol.58, pp.47-50
DOI: 10.1016/j.exger.2014.07.007
PMID: 25019471
NLM abbreviation: Exp Gerontol
ISSN: 0531-5565
eISSN: 1873-6815
Grant note: name: University of Nebraska Agricultural Research Division, award: #1000080, #NEB-36-078
Language: English
Date published: 10/2014
Academic Unit: Center for Social Science Innovation; Injury Prevention Research Center; Health, Sport, and Human Physiology
Record Identifier: 9984259396902771

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