Sökning: "eccentric contractions"

Visar resultat 1 - 5 av 12 avhandlingar innehållade orden eccentric contractions.

  1. 1. Exercise-induced muscle soreness : a qualitative and quantitative study of human muscle morphology and function

    Författare :Jan Fridén; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Human; exercise; exertion; eccentric contractions; muscles; muscle strength; muscle soreness; fibre types; myofibrils; muscle proteins; histocy to chemistry; ultrastructure; stereology;

    Sammanfattning : Exercise-induced muscle soreness is characterized by stiffness, tenderness and pain during active movements and weakness of the affected musculature the days after unusually or particularly heavy work. The most pronounced subjective symptoms do not arise immediately but rather between a couple of hours to some days after the exercise (a delayed-onset of muscle soreness), the intensity of pain is greatest about 48 hours after the work. LÄS MER

  3. 2. 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

  4. 3. Muscular force production during non-isometric contractions: Towards numerical muscle modeling

    Författare :Natalia Kosterina; Anders Eriksson; Ulla Svantesson; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mouse skeletal muscle. Transient-length contractions. Muscular force. Force modification. History effect. Muscle modelling.; Engineering mechanics; Teknisk mekanik;

    Sammanfattning : The main objective of the study was to investigate skeletal muscle force production during isometric contractions, active muscle stretches and shortenings. The motivation behind this work is to improve the dominant model of muscle contraction force generation based on the theories of Hill. LÄS MER

  5. 4. Muscle injury and pain : effects of eccentric exercise, sprint running, forward lunge and sports massage

    Författare :Sven Jönhagen; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :Muscle injury; muscle pain; DOMS; eccentric; massage; sprint runner; EMG;

    Sammanfattning : Muscle injuries are the most common injury in sports and both athletes and non-athletes are commonly seen in general practice and in the emergency department. Muscle pain is a common cause for absence from work and the cost to society is high. LÄS MER

  7. 5. Biomechanical and neural aspects of eccentric and concentric muscle performance in stroke subjects : Implications for resistance training

    Författare :Mattias Hedlund; Britta Lindström; Peter Sojka; Ronnie Lundström; Carl-Johan Olsson; Jan Lexell; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; fMRI; Isokinetic; Motor imagery; Muscular strength; Resistance training; Neurological rehabilitation;

    Sammanfattning : Muscle weakness is one of the major causes of post-stroke disability. Stroke rehabilitation programs now often incorporate the same type of resistance training that is used for healthy subjects; however, the training effects induced from these training strategies are often limited for stroke patients. LÄS MER