Search for dissertations about: "slow twitch"

Showing result 1 - 5 of 17 swedish dissertations containing the words slow twitch.

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

    Author : Filli Nurhussen; Anders Eriksson; Ulla Svantesson; KTH; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; 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

  2. 2. 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 : MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; 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

  3. 3. Human muscle response to sprint exercise in a gender perspective

    Author : Mona Esbjörnsson Liljedahl; Karolinska Institutet; Karolinska Institutet; []
    Keywords : MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; 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

  4. 4. Effects of ageing on contractility and myosin composition of rat and man skeletal muscles and muscle cells : With special reference to muscle adaptability

    Author : Xiaopeng Li; Karolinska Institutet; Karolinska Institutet; []
    Keywords : MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; ageing; hyperthyroidism; skeletal muscle; single skinned fibre; isometric twitch; slack test; shortening velociy; electrophoresis; myosin isoform; immunocytochemistry;

    Abstract : EFFECTS OF AGEING ON CONTRACTILITY AND MYOSIN COMPOSITION OF RAT AND MAN SKELETAL MUSCLE AND MUSCLE CELLS With special reference to muscle adaptability Xiaopeng LiDissertation from the Neurophysiology Section, Department of Clinical Neuroscience Karolinska Hospital and Institute, S-171 76 Stockholm, Sweden The aims of this thesis were to characterize the effects of ageing on the contractile and biochemical propertiesof fast- and slow-twitch skeletal muscles at the whole muscle amd single fibre level in an anempt to improve our understandingof the mechanisms underlying the age-related impairments of muscle fimcdon. Specific mterest was in the adaptabiliy ofskeletal muscle amd the regulation of speed of shonening at single-cell level in tbe rat and m man. READ MORE

  5. 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 : MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; 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