Abstract:
:Using the indentation method, we investigated the effects of physical exercise (treadmill running 4 km/day for 15 weeks) on stiffness of the articular cartilage in the canine knee. Considering cartilage to be an elastic material with homogeneity and isotropy, we calculated elastic moduli for femoral, tibial, and patellar cartilages using instant and 15-s deformations after load application. Although the elastic moduli do not represent, because of the non-equilibrium condition, true elastic properties of articular cartilage, they characterize, together with the retardation time spectrum, the integrated response of articular cartilage during the first 15 s after load application. The moderate loading used in our training program caused no macroscopic changes on the articular surface. In running dogs, the mean stiffness of articular cartilage increased by 6% as compared with the controls. Stiffening, which was attributed to the decreased fluid flow in the cartilage, was significant (P less than 0.05) on the patellar surface of the femur and on the tibial condyles. In general, stiffness increased more (approximately 10%) in the cartilage areas, which were repeatedly heavily loaded during running exercise. This alteration in the biomechanical property as well as an increase (approximately 11%) in thickness were considered to be typical responses of articular cartilage to an increased, but physiologic loading pattern.
journal_name
Int J Sports Medjournal_title
International journal of sports medicineauthors
Jurvelin J,Kiviranta I,Tammi M,Helminen HJdoi
10.1055/s-2008-1025743subject
Has Abstractpub_date
1986-04-01 00:00:00pages
106-10issue
2eissn
0172-4622issn
1439-3964journal_volume
7pub_type
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journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-2007-1024924
更新日期:1989-10-01 00:00:00
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journal_title:International journal of sports medicine
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journal_title:International journal of sports medicine
pub_type: 杂志文章
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journal_title:International journal of sports medicine
pub_type: 杂志文章
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更新日期:2009-10-01 00:00:00
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journal_title:International journal of sports medicine
pub_type: 杂志文章
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journal_title:International journal of sports medicine
pub_type: 杂志文章
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更新日期:2020-09-01 00:00:00
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journal_title:International journal of sports medicine
pub_type: 杂志文章
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更新日期:2015-02-01 00:00:00
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journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/a-0888-8816
更新日期:2019-09-01 00:00:00
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journal_title:International journal of sports medicine
pub_type: 杂志文章
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更新日期:1994-05-01 00:00:00
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journal_title:International journal of sports medicine
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更新日期:2016-06-01 00:00:00
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journal_title:International journal of sports medicine
pub_type: 临床试验,杂志文章
doi:10.1055/s-2004-817914
更新日期:2005-01-01 00:00:00
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journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-2000-3785
更新日期:2000-07-01 00:00:00
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journal_title:International journal of sports medicine
pub_type: 杂志文章
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更新日期:2009-07-01 00:00:00
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journal_title:International journal of sports medicine
pub_type: 杂志文章,评审
doi:10.1055/s-2008-1025805
更新日期:1985-02-01 00:00:00
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journal_title:International journal of sports medicine
pub_type: 杂志文章
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更新日期:1988-12-01 00:00:00
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journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-2005-837460
更新日期:2005-12-01 00:00:00
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journal_title:International journal of sports medicine
pub_type: 杂志文章,随机对照试验
doi:10.1055/s-0042-108197
更新日期:2016-10-01 00:00:00
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journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-2008-1025864
更新日期:1985-12-01 00:00:00
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journal_title:International journal of sports medicine
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journal_title:International journal of sports medicine
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更新日期:2012-01-01 00:00:00
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更新日期:2009-01-01 00:00:00
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journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-2008-1026043
更新日期:1983-11-01 00:00:00
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journal_title:International journal of sports medicine
pub_type: 杂志文章,评审
doi:10.1055/s-2007-1021133
更新日期:1994-10-01 00:00:00
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journal_title:International journal of sports medicine
pub_type: 杂志文章
doi:10.1055/s-2007-972629
更新日期:1997-05-01 00:00:00
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journal_title:International journal of sports medicine
pub_type: 临床试验,杂志文章
doi:10.1055/s-2004-820998
更新日期:2005-05-01 00:00:00
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journal_title:International journal of sports medicine
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journal_title:International journal of sports medicine
pub_type: 杂志文章
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更新日期:2014-06-01 00:00:00
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journal_title:International journal of sports medicine
pub_type: 临床试验,杂志文章
doi:10.1055/s-2008-1026076
更新日期:1982-08-01 00:00:00
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journal_title:International journal of sports medicine
pub_type: 临床试验,杂志文章
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更新日期:2005-07-01 00:00:00