Search for dissertations about: "Maximum voluntary isometric contraction"

Showing result 1 - 5 of 8 swedish dissertations containing the words Maximum voluntary isometric contraction.

  2. 1. Neuromuscular adaptations to muscle fatigue during submaximal isometric contractions in man

    Author : Wolfgang N Löscher; Karolinska Institutet; Karolinska Institutet; []
    Keywords : isometric; electromyography; tremor; H-reflex; twitch; motoneuron; recruitment; la-afferents; recurrent inhibition; central fatigue; excitatory drive; gastrocnemius; soleus; triceps surae; tendon vibration; ischemia; Renshaw cellStockholm 1995;

    Abstract : During a sustained contraction, the force producing capacity of a muscle gradually decreases. In order to maintain a constant force output, the neuromuscular system has to adapt to the contractile fatigue process. READ MORE

  4. 2. High-Density Electromyography-Based Methods for Joint Torque Prediction and Motor Unit Behavior Observation

    Author : Asta Kizyte; Ruoli Wang; Elena Gutierrez-Farewik; Christian Antfolk; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Ankle; isometric contractions; machine learning; neuromuscular control; spinal cord injury; Fotled; isometriska kontraktioner; maskininlärning; neuromuskulär kontroll; ryggmärgsskada; Teknisk mekanik; Engineering Mechanics;

    Abstract : Electromyography (EMG) is a technique that measures the electrical activity of muscles. It reflects muscle activation and provides an interface to the central nervous system at the level of the muscle or individual motor units, which helps us understand the mechanisms of muscle force production, control, and coordination. READ MORE

  5. 3. An Investigation of the Influence of Knee Flexion Angle on the Activity of the Triceps Surae Muscles during the Heel-Raise Test

    Author : Kim Hébert-Losier; S. John Sullivan; Anthony G. Schneiders; José A. García; Univeristy of Otago; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Biomechanics; Electromyography; Triceps surae; Achilles tendon; Plantar flexion; Heel raise test; Physiotherapy; Rehabilitation; Musculoskeletal; Movement analysis; Muscle endurance; Maximum voluntary isometric contraction;

    Abstract : Background: The heel-raise test (HRT) is used in clinical practice and research to assess the triceps suare (TS) muscles. The test involves repetitive unilateral heel-raises in upright stance. The test is administered with the knee straight for gastrocnemius medialis (GM) and lateralis (GL), and with the knee bent for soleus (SOL). READ MORE

  6. 4. Masseter muscle pain and its relation to pain mediators in fibromyalgia and local myalgia

    Author : Britt Hedenberg-Magnusson; Karolinska Institutet; Karolinska Institutet; []
    Keywords : Fibromyalgia; glucocorticoid; intramuscular temperature; isometric contraction; leukotriene B4; masseter muscle; microdialysis; myalgia; neuropeptide Y; pressure pain threshold; pressure pain tolerance level; prostaglandin E2; trapezius muscle; temporomandibular disorders; questionnaire; visual analogue pain scale.;

    Abstract : The aim of this investigation was to study chronic jaw muscle pain in fibromyalgia, local myalgia and healthy individuals in relation to the pain mediators PGE2, LTB4 and NPY and to study the effects of glucocorticoid administration and repetitive isometric contraction. A questionnaire showed presence of symptoms from the temporomandibular region in almost all fibromyalgia patients and the local pain was correlated to the general pain but on a lower level. READ MORE

  7. 5. Children with spastic cerebral palsy : aspects of muscle activity and botulinum toxin a treatment

    Author : Kristina Tedroff; Karolinska Institutet; Karolinska Institutet; []
    Keywords : Cerebral Palsy; children; spasticity; voluntary activity; co-activity; synergistic muscle activity; botulinum toxin A; long-term; contracture; gait development;

    Abstract : Backgound: Cerebral Palsy (CP) is a heterogeneous disorder in which movement and posture are always affected. Spasticity is one of the most common symptoms. A spastic muscle prevents normal motor behaviour and is believed to cause secondary contractures. READ MORE