Reliability and effects of muscular pretension on isometric strength of older adults.
There were two objectives to this study: (a) to determine the reliability of measuring isometric maximum torque (MT) and maximum rate of torque development (MRTD) of the knee extensor and flexor muscles and (b) to assess the effects of different muscular pretensions on MT and MRTD of older adults. M...
| Publicado en: | European Review of Aging & Physical Activity Vol. 11; no. 1; pp. 69 - 77 |
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| Autores principales: | , |
| Formato: | Artículo |
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BioMed Central
Apr2014
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ssf&AN=95632348&site=ehost-live header: @attributes: shortDbName: ssf uiTerm: 95632348 longDbName: Social Sciences Full Text (H.W. Wilson) uiTag: AN controlInfo: bkinfo: jinfo: jid: 18137253 3RAQ jtl: European Review of Aging & Physical Activity issn: 18137253 maglogo: N pubinfo: dt: Apr2014 vid: 11 iid: 1 pid: 24147 pub: BioMed Central artinfo: ui: 95632348 10.1007/s11556-013-0131-y ppf: 69 ppct: 8 formats: fmt: @attributes: type: P size: 671KB tig: atl: Reliability and effects of muscular pretension on isometric strength of older adults. aug: au: Morat, Tobias Preuß, Peter affil: Institute of Movement and Sport Gerontology, German Sport University Cologne, Am Sportpark Muengersdorf 6 50933 Cologne Germany University Sport, University of Bonn, Bonn Germany su: Physical fitness Health of older people Isometric exercise Muscle strength Knee anatomy Muscles sug: subj: Physical fitness Health of older people Fitness and Recreational Sports Centers Isometric exercise Muscle strength Knee anatomy Muscles keyword: Aging Lower extremity Muscular pretension Strength measurement Torque Aging Lower extremity Muscular pretension Strength measurement Torque ab: There were two objectives to this study: (a) to determine the reliability of measuring isometric maximum torque (MT) and maximum rate of torque development (MRTD) of the knee extensor and flexor muscles and (b) to assess the effects of different muscular pretensions on MT and MRTD of older adults. Maximum strength of 35 untrained healthy older adults (aged 66.9 ± 6.6 years; height 1.72 ± 0.07 m; weight 75.2 ± 9.6 kg) was measured. Strength measurement was performed with the Dr. Wolff ISO Check using a piezo-electric force transducer. MT intra-day coefficient of variation (CV) was between 3.30 and 12.40 % for both measurement sessions. Intraclass correlation coefficients (ICC) ranging from 0.71 to 0.99 showed good relative reliability. MT test-retest reliability (between sessions 1 and 2) of knee extension reached a CV between 7.10 and 9.30 % and high ICC values. The measurement of the knee flexion achieved an acceptable CV (9.40 %) at 40 % muscular pretension. MRTD was negatively influenced by muscular pretension ( p <0.05). In conclusion, MT could be measured reliably over different trials using isometric strength measurement. The test-retest reliability was acceptable at knee extension with 10 to 40 % muscular pretension and with 40 % muscular pretension at knee flexion. A higher muscular pretension has no impact on MT but decreases MRTD in older adults. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: N holdings: @attributes: islocal: N |
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