The Experts below are selected from a list of 3426 Experts worldwide ranked by ideXlab platform
Sarah Tenberg - One of the best experts on this subject based on the ideXlab platform.
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Semimembranosus Muscle displacement is associated with movement of the superficial fascia: An in vivo ultrasound investigation.
Journal of anatomy, 2020Co-Authors: Jan Wilke, Sarah TenbergAbstract:The deep fascia enveloping the skeletal Muscle has been shown to contribute to the mechanics of the locomotor system. However, less is known about the role of the superficial fascia (SF). This study aimed to describe the potential interaction between the Hamstring Muscles and the SF. Local movement of the dorsal thigh's soft tissue was imposed making use of myofascial force transmission effects across the knee joint: In eleven healthy individuals (26.8 ± 4.3 years, six males), an isokinetic dynamometer moved the ankle into maximal passive dorsal extension (knee extended). Due to the morphological continuity between the gastrocnemius and the Hamstrings, stretching the calf led to soft tissue displacements in the dorsal thigh. Ultrasound recordings were made to dynamically visualize (a) the Semimembranosus Muscle and (b) the superficial fascia. Differences in and associations between horizontal movement amplitudes of the two structures, quantified via cross-correlation analyses, were calculated by means of the Mann-Whitney U test and Kendal's tau test, respectively. Mean horizontal movement was significantly higher in the Muscle (5.70 mm) than in the SF (0.72 mm, p
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Semimembranosus Muscle displacement is associated with movement of the superficial fascia an in vivo ultrasound investigation
Journal of Anatomy, 2020Co-Authors: Jan Wilke, Sarah TenbergAbstract:The deep fascia enveloping the skeletal Muscle has been shown to contribute to the mechanics of the locomotor system. However, less is known about the role of the superficial fascia (SF). This study aimed to describe the potential interaction between the Hamstring Muscles and the SF. Local movement of the dorsal thigh's soft tissue was imposed making use of myofascial force transmission effects across the knee joint: In eleven healthy individuals (26.8 ± 4.3 years, six males), an isokinetic dynamometer moved the ankle into maximal passive dorsal extension (knee extended). Due to the morphological continuity between the gastrocnemius and the Hamstrings, stretching the calf led to soft tissue displacements in the dorsal thigh. Ultrasound recordings were made to dynamically visualize (a) the Semimembranosus Muscle and (b) the superficial fascia. Differences in and associations between horizontal movement amplitudes of the two structures, quantified via cross-correlation analyses, were calculated by means of the Mann-Whitney U test and Kendal's tau test, respectively. Mean horizontal movement was significantly higher in the Muscle (5.70 mm) than in the SF (0.72 mm, p < 0.001, r = 0.82). However, a strong correlation between the tissue displacements in both locations was detected (p < 0.001, r = 0.91). A Direct mechanical relationship may exist between the SF and the skeletal Muscle. Deep pathologies or altered Muscle stiffness could thus have long-term consequences for rather superficial structures and vice versa.
Jan Wilke - One of the best experts on this subject based on the ideXlab platform.
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Semimembranosus Muscle displacement is associated with movement of the superficial fascia: An in vivo ultrasound investigation.
Journal of anatomy, 2020Co-Authors: Jan Wilke, Sarah TenbergAbstract:The deep fascia enveloping the skeletal Muscle has been shown to contribute to the mechanics of the locomotor system. However, less is known about the role of the superficial fascia (SF). This study aimed to describe the potential interaction between the Hamstring Muscles and the SF. Local movement of the dorsal thigh's soft tissue was imposed making use of myofascial force transmission effects across the knee joint: In eleven healthy individuals (26.8 ± 4.3 years, six males), an isokinetic dynamometer moved the ankle into maximal passive dorsal extension (knee extended). Due to the morphological continuity between the gastrocnemius and the Hamstrings, stretching the calf led to soft tissue displacements in the dorsal thigh. Ultrasound recordings were made to dynamically visualize (a) the Semimembranosus Muscle and (b) the superficial fascia. Differences in and associations between horizontal movement amplitudes of the two structures, quantified via cross-correlation analyses, were calculated by means of the Mann-Whitney U test and Kendal's tau test, respectively. Mean horizontal movement was significantly higher in the Muscle (5.70 mm) than in the SF (0.72 mm, p
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Semimembranosus Muscle displacement is associated with movement of the superficial fascia an in vivo ultrasound investigation
Journal of Anatomy, 2020Co-Authors: Jan Wilke, Sarah TenbergAbstract:The deep fascia enveloping the skeletal Muscle has been shown to contribute to the mechanics of the locomotor system. However, less is known about the role of the superficial fascia (SF). This study aimed to describe the potential interaction between the Hamstring Muscles and the SF. Local movement of the dorsal thigh's soft tissue was imposed making use of myofascial force transmission effects across the knee joint: In eleven healthy individuals (26.8 ± 4.3 years, six males), an isokinetic dynamometer moved the ankle into maximal passive dorsal extension (knee extended). Due to the morphological continuity between the gastrocnemius and the Hamstrings, stretching the calf led to soft tissue displacements in the dorsal thigh. Ultrasound recordings were made to dynamically visualize (a) the Semimembranosus Muscle and (b) the superficial fascia. Differences in and associations between horizontal movement amplitudes of the two structures, quantified via cross-correlation analyses, were calculated by means of the Mann-Whitney U test and Kendal's tau test, respectively. Mean horizontal movement was significantly higher in the Muscle (5.70 mm) than in the SF (0.72 mm, p < 0.001, r = 0.82). However, a strong correlation between the tissue displacements in both locations was detected (p < 0.001, r = 0.91). A Direct mechanical relationship may exist between the SF and the skeletal Muscle. Deep pathologies or altered Muscle stiffness could thus have long-term consequences for rather superficial structures and vice versa.
Alain Kondjoyan - One of the best experts on this subject based on the ideXlab platform.
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Lien entre modifications physico-chimiques des protéines et perte de poids à la cuisson –cas du jambon cuit avec différents taux de sel
2012Co-Authors: Laure Bombrun, Alain Kondjoyan, Jeanne Danon, Philippe GatellierAbstract:In a context of salt content reduction in cooked ham, the effect of salt content on cooking loss and protein physicochemical changes (oxidation and denaturation) was investigated. Experimentations were performed on pork Semimembranosus Muscle salted at 0.9, 1.2 and 1.5 % and cooked at 50 or 70°C during 20, 60 and 120 min. Protein oxidation was evaluated by the measurement of free thiols and carbonyl groups. Thermal denaturation was assessed by the measurement of myofibrillar proteins surface hydrophobicity. A reduction of salt content significantly (p < 0.001) increased cooking loss and hydrophobicity but had limited effect on protein oxidation. Cooking loss was significantly correlated (p < 0.001) with carbonyls formation and protein thermal denaturation, indicating a potential involvement of protein physicochemical changes in water binding capacity.
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Kinetic analysis of cooking losses from beef and other animal Muscles heated in a water bath--effect of sample dimensions and prior freezing and ageing.
Meat science, 2011Co-Authors: Samuel Oillic, Eric Lemoine, Jean-bernard Gros, Alain KondjoyanAbstract:Abstract Cooking loss kinetics were measured on cubes and parallelepipeds of beef Semimembranosus Muscle ranging from 1 cm × 1 cm × 1 cm to 7 cm × 7 cm × 28 cm in size. The samples were water bath-heated at three different temperatures, i.e. 50 °C, 70 °C and 90 °C, and for five different times. Temperatures were simulated to help interpret the results. Pre-freezing the sample, difference in ageing time, and in Muscle fiber orientation had little influence on cooking losses. At longer treatment times, the effects of sample size disappeared and cooking losses depended only on the temperature. A selection of the tests was repeated on four other beef Muscles and on veal, horse and lamb Semimembranosus Muscle. Kinetics followed similar curves in all cases but resulted in different final water contents. The shape of the kinetics curves suggests first-order kinetics.
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Kinetic analysis of cooking losses from beef and other animal Muscles heated in a water bath - Effect of sample dimensions and prior freezing and ageing
Meat Science, 2011Co-Authors: Samuel Oillic, Eric Lemoine, Jean-bernard Gros, Alain KondjoyanAbstract:Cooking loss kinetics were measured on cubes and parallelepipeds of beef Semimembranosus Muscle ranging from 1 cm × 1 cm × 1 cm to 7 cm × 7 cm × 28 cm in size. The samples were water bath-heated at three different temperatures, i.e. 50°C, 70°C and 90°C, and for five different times. Temperatures were simulated to help interpret the results. Pre-freezing the sample, difference in ageing time, and in Muscle fiber orientation had little influence on cooking losses. At longer treatment times, the effects of sample size disappeared and cooking losses depended only on the temperature. A selection of the tests was repeated on four other beef Muscles and on veal, horse and lamb Semimembranosus Muscle. Kinetics followed similar curves in allCooking loss kinetics were measured on cubes and parallelepipeds of beef Semimembranosus Muscle ranging from 1 cm × 1 cm × 1 cm to 7 cm × 7 cm × 28 cm in size. The samples were water bath-heated at three different temperatures, i.e. 50°C, 70°C and 90°C, and for five different times. Temperatures were simulated to help interpret the results. Pre-freezing the sample, difference in ageing time, and in Muscle fiber orientation had little influence on cooking losses. At longer treatment times, the effects of sample size disappeared and cooking losses depended only on the temperature. A selection of the tests was repeated on four other beef Muscles and on veal, horse and lamb Semimembranosus Muscle. Kinetics followed similar curves in all cases but resulted in different final water contents. The shape of the kinetics curves suggests first-order kinetics.
Maria Siemionow - One of the best experts on this subject based on the ideXlab platform.
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Combined Semimembranosus Muscle and Epigastric Skin Flap Model
Plastic and Reconstructive Surgery, 2014Co-Authors: Galip Agaoglu, Maria SiemionowAbstract:A new model of combined Semimembranosus Muscle and epigastric skin free flap was designed. The flap was based on a single pedicle consisting of the muscular branch of Semimembranosus Muscle and superficial epigastric vessels in continuity with femoral vessels. The anatomy of the Semimembranosus Muscle was studied in details. The mean length of the Muscle was 38 mm and width was and 11 mm. The mean weight of the Muscle was 1.03 g. The mean external diameter of the femoral artery was 1 mm and vein was 1.2 mm. Eight combined Semimembranosus/epigastric skin flaps were dissected and transferred into the neck and contralateral groin regions with 100 % of success rate. This model of combined Muscle and skin flap has several advantages. It is reliable, versatile, easy to dissect with long vascular pedicle and adequate vessels diameter for the anastomoses. It can be used for different applicability including: microcirculatory, pharmacological, physiological, biochemical and immunological studies.
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Combined Semimembranosus Muscle and epigastric skin flap: a new model of composite-free flap in the rat.
Annals of plastic surgery, 2005Co-Authors: Galip Agaoglu, Maria SiemionowAbstract:We present a new model of combined Semimembranosus Muscle and epigastric skin free flap based on a single pedicle consisting of the muscular branch of Semimembranosus Muscle and superficial epigastric vessels in continuity with femoral vessels. In 10 rats, the anatomy of the Semimembranosus Muscle was studied in detail. The mean length of the Muscle was 38 mm and width was 11 mm. The mean weight of the Muscle was 1.03 g. The mean external diameter of the femoral artery was 1 mm and vein was 1.2 mm. Eight combined Semimembranosus/epigastric skin flaps were dissected and transferred into the neck and contralateral groin regions with 100% success rate. This model of combined Muscle and skin flap has several advantages. It is reliable, versatile, easy to dissect with long vascular pedicle and adequate vessel diameter for the anastomoses. It can be used for different applicability, including microcirculatory, pharmacologic, physiological, biochemical, and immunologic studies.
Roger Cooke - One of the best experts on this subject based on the ideXlab platform.
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Contraction of glycerinated rabbit slow-twitch Muscle fibers as a function of MgATP concentration.
American Journal of Physiology-Cell Physiology, 1992Co-Authors: E. Pate, M. Lin, Kathleen Franks-skiba, Roger CookeAbstract:We have measured the isometric tension and force-velocity relationships of glycerinated rabbit slow-twitch Semimembranosus Muscle as a function of MgATP concentration ([MgATP]) and have compared th...
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Contraction of glycerinated rabbit slow-twitch Muscle fibers as a function of MgATP concentration.
The American journal of physiology, 1992Co-Authors: E. Pate, M. Lin, Kathleen Franks-skiba, Roger CookeAbstract:We have measured the isometric tension and force-velocity relationships of glycerinated rabbit slow-twitch Semimembranosus Muscle as a function of MgATP concentration ([MgATP]) and have compared the results with those obtained previously from fast-twitch psoas Muscle. We find that isometric tension decreases as [MgATP] increases. The magnitude of the decrease is not as great as observed in psoas. Maximum shortening velocity (Vmax) exhibits classical Michaelian saturation behavior with respect to [MgATP] with a Michaelis constant (Km) for half-maximal velocity of 18 microM and a value at saturating [MgATP] of 0.6 Muscle lengths/s. Similar values were observed in fibers from soleus, another slow-twitch Muscle. The corresponding values in rabbit psoas Muscle are 150 microM and 1.6 lengths/s. Compared with psoas, in Semimembranosus Muscle Km decreases by a factor of approximately 10, whereas Vmax decreases by about a factor of 3. Thus, although in a nonphysiological regime, at low [MgATP], a "fast" Muscle actually has a lower shortening velocity than a "slow" Muscle.
