Isokinetic external rotation strength of shoulder : correlation with age and muscle size.

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dc.contributor.authorPradhan, R Len_US
dc.contributor.authorItoi, Een_US
dc.contributor.authorShimizu, Ten_US
dc.contributor.authorWakabayashi, Ien_US
dc.contributor.authorSato, Ken_US
dc.date.accessioned2009-05-28T03:48:29Z
dc.date.available2009-05-28T03:48:29Z
dc.date.issued2006-06-06en_US
dc.description.abstractThe purpose of this study was to determine the correlation between quantitative (cross sectional areas) evaluation of the posterior cuff muscles and mechanical strength in asymptomatic shoulders with special reference to aging. The cross-sectional area of the combined infraspinatus and teres minor muscles were measured, in the sagittal oblique magnetic resonance images, in eighty-one patients with a mean age of 44.06 years (range 19 - 74). These areas were correlated with the measured isokinetic strength in external rotation at angular velocities of 60 deg/s and 180 deg/s using Cybex 770 NORM. The results show that there was a gradual decrease in size of the muscles as the age of the individual increases. A strong correlation was found between aging and combined cross-sectional area and peak torque as well. The correlation between combined cross-sectional area and peak torques at both angular velocities were less strong. Further, the correlation between the peak torque/cross-sectional area ratio with aging was also less significant, which may imply that the decrease in the muscle strength was greater than the change in muscle area. Our results suggest that there may be other qualitative and biochemical factors that may determine the true strength of the muscles in the aged population.en_US
dc.description.affiliationAkita University School of Medicine, 1-1-1 Hondo, Akita 010-8543, Japan. rabi.ortho@gmail.comen_US
dc.identifier.citationPradhan RL, Itoi E, Shimizu T, Wakabayashi I, Sato K. Isokinetic external rotation strength of shoulder : correlation with age and muscle size. Journal of the Nepal Medical Association. 2005 Oct-Dec; 44(160): 143-51en_US
dc.identifier.urihttps://imsear.searo.who.int/handle/123456789/46003
dc.language.isoengen_US
dc.source.urihttps://www.jnma.com.np/en_US
dc.subject.meshAdulten_US
dc.subject.meshAge Factorsen_US
dc.subject.meshAgeden_US
dc.subject.meshAging --physiologyen_US
dc.subject.meshExercise Testen_US
dc.subject.meshHumansen_US
dc.subject.meshMagnetic Resonance Imagingen_US
dc.subject.meshMiddle Ageden_US
dc.subject.meshMuscle Strength --physiologyen_US
dc.subject.meshMuscles --anatomy & histologyen_US
dc.subject.meshRange of Motion, Articularen_US
dc.subject.meshShoulder Joint --physiologyen_US
dc.titleIsokinetic external rotation strength of shoulder : correlation with age and muscle size.en_US
dc.typeJournal Articleen_US
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