Age-Related Changes in Contractile Capacity of Lower Extremity Muscles Caused by Inadequate Blood Supply

Щурова, Е. Н.; Щуров, В. А.; Гребенюк, Л. А.

doi:10.1023/b:hump.0000021650.77878.2f

Cited by 2 publications

(3 citation statements)

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“…Earlier, rather complex procedures have used oscillations or perturbations longitudinal to tissue or muscle to determine compliance. Technologies incorporating perpendicularly applied forces have been used to quantify muscle compliance change associated with exercise (Murayama et al 2000), arterial insufficiencies (Shchurova et al 2004), venous occlusions (Arokoski et al 2005), stroke (Leonard et al 2004, Rydahl and Brouwer 2004, Leonard et al 2006 and intramuscular pressures (Korhonen et al 2005).…”

Section: Introductionmentioning

confidence: 99%

Construct validity of myotonometric measurements of muscle compliance as a measure of strength

et al. 2007

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Myotonometric measurement of muscle compliance represents new technology that quantifies muscle tone. Compliance change during muscle contraction might provide an indirect measure of strength. The purpose of this study was to determine relationships among myotonometric measurements of muscle compliance, surface electromyographic (sEMG) measurements of muscle activation and joint force production during voluntary isometric knee extensions. The level of relationship will contribute to the construct validity of use of muscle compliance as an indirect strength measurement. Thirteen male subjects, mean age 25 +/- 1.5 years, participated. Simultaneous recordings of myotonometric, sEMG of the rectus femoris and isometric knee extension force measurements were taken at rest, during maximal voluntary contraction (MVC), and during 33% and 66% MVC contractions. Relationships among the three measurement procedures were calculated using correlation and regression analyses. Myotonometric measures of muscle compliance, sEMG and force measurements were highly correlated. Myotonometric measurements were best represented by a curvilinear (quadratic) relationship to sEMG (r = 0.82, p < 0.001) and joint force (r = 0.83, p < 0.001). The present experiments establish the construct validity of myotonometric measurements of muscle compliance as an indirect means of quantifying muscle strength and activation levels. This method, therefore, offers a possible alternative for cases in which direct measurement of joint force or sEMG is difficult or inappropriate.

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Section: Introductionmentioning

confidence: 99%

Construct validity of myotonometric measurements of muscle compliance as a measure of strength

et al. 2007

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“…Исследования здоровых детей показали, что величины упругости кожных покровов и мышц увеличиваются по мере естественного продольного роста конечности. У пациентов с отставанием в росте сегментов конечностей после их оперативного удлинения было выявлено, что показатели упругости мышц, кожных покровов достигают значений, характерных для здоровых людей с такой же длиной соответствующей конечности [21][22][23].…”

Section: цель работыunclassified

“…В диссертационной работе Т.И. Менщиковой (1997) дан физиологический анализ [36][37][38] влияния удлинения нижних конечностей на показатели локомоторной двигательной активности пациентов с ахондроплазией [39]. В работе Д.В.…”

Section: Figunclassified

History of biomechanical research at the Ilizarov Centre (to the 100th anniversary of Academician G.A. Ilizarov)

Щурова

Долганова

Долганов

et al. 2023

Acta biomedica scientifica

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Background. Biomechanical studies of both the Ilizarov apparatus itself and the physiological system “apparatus – limb” occupy a significant place in the history of the formation and elaboration of the Ilizarov method, developed in the middle of the last century at the Kurgan Research Institute of Experimental Traumatology and Orthopaedics (nowadays – the world-famous Centre named after its creator). The analysis of the history of biomechanical research in the formation of Ilizarov method is not without interest.The aim. To analyze the history and stages of development of biomechanical research in order to substantiate the effectiveness of the Ilizarov method of transosseous osteosynthesis.Results. The national medical industry did not produce the appropriate equipment for biomechanical research in the early 1970s. That is why a group of engineers was included into the Laboratory of Clinical Physiology and Biomechanics (established in 1971) of the Ilizarov Centre, which created equipment for studying the processes in the tissues of the limbs and in the structure of the Ilizarov apparatus itself during its traction and compression impact on biological structures. The community of physicians, scientists and engineers made it possible to overcome a number of difficulties and problems. In their scientific publications and dissertations, the laboratory staff paid great attention to biomechanical research during transosseous osteosynthesis with the Ilizarov apparatus. At present, the staff of the Ilizarov Centre continues the traditions established by G.A. Ilizarov. For the first time in our country, a computer 3D video analysis of the kinematics and kinetics of orthopedic patients gait was introduced; it was supplemented with embedded software for the preparation of a clinical report of human gait biomechanics.Conclusions. The initial stage of the biomechanical research at the Ilizarov Centre included the creation of the research equipment. Subsequently, the biomechanical studies carried out by the staff of the Centre for almost half a century have shown an applied and functional result of the realization of general biological regularities of the Ilizarov’s discovery. At present, the biomechanical research continues at a higher level with the use of modern high-tech equipment.

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Age-Related Changes in Contractile Capacity of Lower Extremity Muscles Caused by Inadequate Blood Supply

Cited by 2 publications

References 15 publications

Construct validity of myotonometric measurements of muscle compliance as a measure of strength

Construct validity of myotonometric measurements of muscle compliance as a measure of strength

History of biomechanical research at the Ilizarov Centre (to the 100th anniversary of Academician G.A. Ilizarov)

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