Search for dissertations about: "fast twitch"

Showing result 1 - 5 of 21 swedish dissertations containing the words fast twitch.

  2. 1. Experimental studies on mouse slow and fast twitch muscles

    Author : Filli Nurhussen; Anders Eriksson; Ulla Svantesson; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Other engineering mechanics; Övrig teknisk mekanik;

    Abstract : This thesis deals with physiological and mechanical properties of fast and slow twitch mouse muscles. It discusses isometric, concentric and eccentric contractions of mouse extensor digitorum longus ('EDL') and soleus ('SOL') muscles. READ MORE

  4. 2. Post activation potentiation : Modulating factors and mechanisms for muscle performance

    Author : Paulo Gago; Ekblom Maria; Anton Arndt; Nicola Maffiuletti; Gymnastik- och idrottshögskolan; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Potentiation; twitch; triceps surae; knee angle; stiffnes; length changes; electromechanical delay; Medicin Teknik; Medicine Technology;

    Abstract : Introduction: Acute enhancements of muscle contractile properties and performance subsequent to a maximal or near maximal conditioning contraction are often termed post activation potentiation (PAP). Although still controversial, PAP is commonly linked to enhancements in the myosin regulatory light chain phosphorylation, leading to improvements in the excitation–contraction coupling. READ MORE

  5. 3. The role of Six1 in muscle progenitor cells and the establishment of fast-twitch muscle fibres

    Author : Hanna Nord; Jonas von Hofsten; Freek van Eeden; Umeå universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Myogenesis; zebrafish; muscle fibre; patterning; fmyhc; myl1; Six1; Pax7;

    Abstract : Myogenesis is the process of skeletal muscle tissue formation where committed muscle progenitor cells differentiate into skeletal muscle fibres. Depending on the instructive cues the muscle progenitor cells receive they will differentiate into specific fibre types with different properties. READ MORE

  6. 4. Human muscle response to sprint exercise in a gender perspective

    Author : Mona Esbjörnsson Liljedahl; Karolinska Institutet; Karolinska Institutet; []
    Keywords : Anaerobic; Performance; Wingate-test; muscle biopsy; Adenine nucleotides; hormones; glycogen; type I fibres; type II fibres; fast twitch; slow twitch; muscle morphology; men; women; sprint training;

    Abstract : Anaerobic performance, muscle characteristics and acute and chronic response to sprint exercise were studied in physically active healthy women (n=35; age 24) and men (n=38; age 25). The aims of the present study were to: 1) Establish if women possess lower oxidative and glycolytic capacity, higher proportion of type I fibres and smaller type II fibre areas in relation to type I fibre areas in thigh musculature than men. READ MORE

  7. 5. Physiological changes in mice deficient in different subtypes of thyroid hormone receptors : a focus on studies of heart and muscle

    Author : Catarina Johansson; Karolinska Institutet; Karolinska Institutet; []
    Keywords : heart rate; ECG; body temperature; [beta]-adrenergic receptor density; thyroid hormone; isometric twitch; SERCa;

    Abstract : The aim of these studies was to determing the specific roles of the different subtypes of thyroid hormone receptors (TR), with focus on heart and muscle function, by using mice deficient in TR[alpha]1, TR[beta] (both TR[beta]1 and TR[beta]2 subtypes) and TR[alpha]1/[beta]. For this purpose, new techniques were set up to study various physiological parameters in these mice. READ MORE