Sökning: "isokinetic"

Visar resultat 11 - 15 av 59 avhandlingar innehållade ordet isokinetic.

1. 11. Neuromuscular aspects of eccentric knee extensor actions : effects of electrical stimulation, age, gender and training

   Författare :Jan Seger; Alf Thorstensson; Roger Enoka; Gymnastik- och idrottshögskolan; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Physiology; Fysiologi; children; concentric; eccentric; efficiency; electrical stimulation; electromyography; growth; inhibition; isokinetic; specificity; strength; training;

   Sammanfattning : The overall aim of this thesis was to study the effects of electrical stimulation, age, gender and training on the torque- and EMG-velocity relationships during eccentric knee extensor muscle actions in man. An isokinetic custom-built dynamometer was evaluated and used throughout the thesis. LÄS MER

3. 12. On methods of evaluation of lower extremity eccentric muscle performance and loading

   Författare :Pär Westblad; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :Biomechanics; eccentric; electromyography; isokinetic; methods; muscle endurance; pilot projects; reproducibility of results; strain; thigh; tibia.;

   Sammanfattning : This investigation has developed and evaluated methods for measuring eccentric muscle function and loading of the human lower extremity, including isokinetic tests of knee extensor muscle performance and a comprehensive in vivo method for conditions of functional loading. For measurement of knee extensor muscle performance, a protocol of 100 repetitive maximal actions at 90° was applied using a Biodex isokinetic dynamometer. LÄS MER

4. 13. Velocity controlled dynamometry and gait analysis : development of methods and applications

   Författare :Lennart Gransberg; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :Dynamometry; torque; measurement error; overshoot; isokinetic; concentric; eccentric; gait analysis; three-dimensional; electrogoniometer; electromagnetic tracking;

   Sammanfattning : The isokinetic systems developed in the present study can measure torque in maximal voluntary and passive movements. The torque recordings may be combined with surface EMG recordings from pairs of antagonistic muscles involved in the movement. Healthy subjects and patients with spastic paresis have been examined. LÄS MER

5. 14. Asymmetric lateral loading of the human trunk

   Författare :Qiang-Min Huang; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :Eccentric; concentric; isokinetic; electromyography; co-activation; trunk; spinal biomechanics; contraction patterns; lateral bending; lifting and lowering; balance; kinematics; postural control; IAP; support translation.;

   Sammanfattning : The overall aim of this thesis was to characterize the biomechanics and neuromuscular control of the human trunk in response to asymmetric lateral loading. The pulling force and strength capacities as well as muscle activation patterns, trunk kinematics and postural balance in relation to lateral trunk flexion and loading were given special consideration. LÄS MER

7. 15. Rehabilitation following bone-patellar tendon-bone graft ACL reconstruction

   Författare :Christina Mikkelsen; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :ACL injury; ACL reconstruction; ACL rehabilitation; Anterior knee laxity; Closed kinetic chain; Extension deficit; Functional outcome score; Gender; Hyperextension brace; Isokinetic open kinetic chain; KOOS; KT-1000 arthrometer; Patello femoral pain; Personality characteristics; Physical activity; Quadriceps torque; Range of motion;

   Sammanfattning : The overall purpose of this Thesis was to improve treatment and rehabilitation after anterior cruciate ligament (ACL) reconstruction with bone-patellar tendon-bone graft. Study I: The purpose of this study was to evaluate and compare closed kinetic chain (CKC) training and a combination of closed and open kinetic chain (OKC) quadriceps exercises following ACL reconstruction on anterior knee laxity and isokinetic muscle torque. LÄS MER