Sökning: "contraction"

Visar resultat 16 - 20 av 409 avhandlingar innehållade ordet contraction.

  1. 16. Regulation of carbohydrate metabolism in skeletal muscle during and after contraction

    Författare :Marie Sandström; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :Skeletal muscle; glucose transport; contraction; ROS; AMPK; glycogen phosphorylase; glycogen synthase;

    Sammanfattning : It is well known that exercise increases glucose transport into skeletal muscles. The regulation of this transport, however, is poorly understood. LÄS MER

  3. 17. Signal transduction and calcium sensitivity of smooth muscle contraction

    Författare :Johan Bonnevier; Institutionen för experimentell medicinsk vetenskap; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Fysiologi; Physiology; hypertrophy; CPI-17; MYPT1; myosin phosphatase; Rho kinase; PKC; smooth muscle; cGK;

    Sammanfattning : Smooth muscles are components of several physiologically important organs and often involved in disease. Smooth muscle contraction is regulated by variations in intracellular [Ca2+]; increased levels activate the myosin light chain kinase (MLCK) which phosphorylates myosin and initiates contraction. LÄS MER

  4. 18. Modelling of muscular force induced by non-isometric contraction

    Författare :Natalia Kosterina; Anders Eriksson; Michael Günther; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Skeletal muscle; Muscular force; Concentric contractions; Eccentric con- tractions; History effect; Force modification; Muscle model; Musculoskeletal model;

    Sammanfattning : The main objective of the study was to investigate and simulate skeletal muscleforce production during and after isometric contractions, active muscle lengtheningand active muscle shortening. The motivation behind this work was to improve thedominant model of muscle force generation based on the theories of Hill from 1938. LÄS MER

  5. 19. Mechanochemical Modeling of Smooth Muscle Activation

    Författare :Sae-Il Murtada; Gerhard A. Holzapfel; Robert McMeeking; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Biomechanics; Muscle contraction; Smooth muscle; Contractile unit; Filament overlap; Intracellular calcium; Carotid artery; Mathematical model;

    Sammanfattning : Smooth muscle has an important role in several physiological processes, where it regulates the wall tension and the size of hollow organs. In blood vessels, the contraction and relaxation of smooth muscle contribute to the mechanical stability of the vessel wall and determines the diameter. LÄS MER

  7. 20. Hypoxic Blackout in Serial Freediving – Protective Mechanisms and Risk Factors

    Författare :Frank Pernett; Erika Schagatay; Glenn Björklund; Anton Westman; Mittuniversitetet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; breath-hold diving; diving response; hyperventilation; hypoxia; oxygen saturation; oxygen stores; pulse oximetry; sonography; splenic contraction.;

    Sammanfattning : Breath-hold diving or freediving exposes the body to stressors such as low oxygen and high carbon dioxide levels in the blood, increased hydrostatic pressure, and cold. The reduction in blood oxygen levels is considered a primary factor for loss of consciousness while diving. This is known as hypoxic blackout. LÄS MER