Sökning: "joint reaction forces"

Visar resultat 1 - 5 av 7 avhandlingar innehållade orden joint reaction forces.

  1. 1. Double Poling Incross-Country Skiing : Biomechanical and Physiological Analysis of Sitting and Standing Positions

    Författare :Marie Lund Ohlsson; Marko Laaksonen; Jonas Danvind; L. Joakim Holmberg; Anders Eriksson; Mittuniversitetet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; blood lactate concentration; cross-country sit-skiing; impairment; internal kinetics; inverse dynamics simulations; joint reaction forces; kinematics; metabolic rate; musculoskeletal modelling; musculoskeletal efficiency; nordic skiing; oxygen uptake; para-skiing; respiration; skiing efficiency.;

    Sammanfattning : Double poling (DP) is a sub-technique in cross-country skiing that has increased in interest over the last decades, e.g. athletes in cross-country skiing have increased their utilisation of double poling during competitions. LÄS MER

  3. 2. Biomechanical analyses of flywheel resistance exercise : From a space- and ground-based perspective

    Författare :Maria Sjöberg; Ola Eiken; Elena Gutierrez-Farewik; Hans E Berg; Patrik Sundblad; Loren FZ Chiu; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; AnyBody Modeling System; concentric; eccentric; eccentric overload; inverse dynamics; knee extensors; microgravity; musculoskeletal deconditioning; net-joint moment; AnyBody Modeling System; excentrisk; excentrisk överbelastning; invers dynamik; knäextensorer; koncentrisk; ledmoment; mikrogravitation; muskuloskeletal nedbrytning; Teknik och hälsa; Technology and Health;

    Sammanfattning : Astronauts suffer degradation of postural muscles and weight-bearing bones during long-duration spaceflight. Resistance exercise is used as a primary countermeasure against these degradations. LÄS MER

  4. 3. Wrist ligaments : innervation patterns and ligamento-muscular reflexes

    Författare :Elisabet Hagert; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :Wrist ligaments; mechanoreceptors; proprioception; sensorimotor functions; neuromuscular control; ligamento-muscular reflexes; immunohistochemistry;

    Sammanfattning : Objectives: The principal role of wrist stability is to facilitate the dexterous hand in a multitude of functions. To achieve joint stability, in general, a fine interaction of both static and dynamic elements is of essence. LÄS MER

  5. 4. Muscle Thixotropy : Implications for Human Motor Control

    Författare :Hans Axelson; Karl-Erik Hagbarth; Mikael Elam; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Neurosciences; Motor control; Skeletal muscle; Thixotropy; History-dependent; EMG; Voluntary contractions; Neurovetenskap; Neurology; Neurologi;

    Sammanfattning : Human skeletal muscles possess thixotropic, i.e. history-dependent mechanical properties. This means that the degree of passive muscle stiffness and resting tension is dependent on the immediately preceding history of contractions and length changes. LÄS MER

  7. 5. Juvenile idiopathic arthritis : disease consequences and treatment effects on muscle strength, gait and pain

    Författare :Eva Broström; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :Gait; muscle strength; kinematics; kinetics; pain;

    Sammanfattning : Juvenile idiopathic arthritis (JIA) may have a profound effect on the life of a child. Rheumatic diseases in children manifest mainly as synovitis, pain, stiffness, deformity, growth disturbances and fatigue. It is not uncommon to have reduced activity, lower aerobic endurance, and decreased muscle strength. LÄS MER