182 research outputs found
Reverse Shoulder Arthroplasty, Does it Work?: Kinematic Analyses, Clinical Evaluation and New Developments
Full text linkVeeger, H.E.J. [Promotor]Janssen, T.W.J. [Promotor]Willems, W.J. [Copromotor
Steps to follow: Toward the clinical assessment and training of walking adaptability
Full text linkBeek, P.J. [Promotor]Janssen, T.W.J. [Promotor]Roerdink, M. [Copromotor
Recovery of walking ability using a robotic device
Full text linkHaan, A. de [Promotor]Gerrits, H.L. [Copromotor]Janssen, T.W.J. [Copromotor
Hybrid cycling in spinal cord injury: Effects on fitness, physical activity and health
Full text linkJanssen, T.W.J. [Promotor]Woude, L.H.V. van der [Promotor]Groot, S. de [Copromotor
Psychomotor Therapy in Chronic Pain Rehabilitation Enhancing body awareness in multidisciplinary treatment
Full text linkJanssen, T.W.J. [Promotor]Peters, M.L. [Promotor]Bosscher, R.J. [Copromotor]Köke, A. [Copromotor
Shoulder pain after stroke
Full text linkDieen, J.H. van [Promotor]Veeger, H.E.J. [Copromotor]Janssen, T.W.J. [Copromotor
Effects of modified electrical stimulation-induced leg cycle ergometer training for individuals with spinal cord injury
Full text linkComputer-controlled electrical stimulation (ES)-induced leg cycle ergometer (ES-LCE) exercise can be beneficial for individuals with spinal cord injury (SCI), but exercise performance is often insufficient for eliciting continuous gains in cardiopulmonary training adaptations. The first purpose of this study was to determine whether a modified ES-LCE improved exercise performance and responses compared with the standard ES-LCE. Modifications to the ES-LCE included increased ES current amplitude (140-300 mA), added shank muscle activation, and increased ES firing angle ranges (+55°). The second purpose was to evaluate the effects of a 6-week interval training program (ITP) with this modified methodology on ES-LCE exercise performance, peak metabolic and cardiorespiratory responses, and muscle strength in experienced and novice riders. No significantly different peak values for power output and stroke volume were found for the two systems, but the modified ES-LCE elicited significantly higher peak values for oxygen uptake (+22%), carbon dioxide production (+51%), pulmonary ventilation (+37%), cardiac output (+32%), heart rate (+19%), and blood lactate concentration (+50%). Power output, metabolic rate, and lower-limb muscle strength increased significantly following training. This study showed that an ITP with the modified ES-LCE can elicit marked improvements in ES-LCE performance (peak power output), peak metabolic and cardiorespiratory responses, and muscle strength in men with SCI, even in those subjects whose performance has plateaued during training on the standard ES-LCE
Blood flow response to electrically induced twitch and tetanic lower-limb muscle contractions.
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141678.pdf (Publisher’s version ) (Open Access)OBJECTIVES: To compare the effect of electric stimulation (ES)-induced twitch with tetanic leg muscle contractions on blood flow responses and to assess blood flow responses in the contralateral inactive leg. DESIGN: Intervention with within-subject comparisons. SETTING: University research laboratory. PARTICIPANTS: A volunteer sample of 12 healthy men (mean age, 25.1+/-3.0y). INTERVENTION: ES was applied at 1 and 3Hz to induce twitch contractions and at 35Hz to induce tetanic contractions of the lower- and upper-leg muscles. Exercise periods consisted of ES/rest cycles (6s/20s) for 5 minutes.Main Outcome Measures: Blood flow velocity changes measured by echo Doppler ultrasonography at rest and during the first 2 subsequent ES cycles. RESULTS: Blood flow significantly increased from resting values for the tetanic 2-leg, tetanic 1-leg, and 3-Hz conditions, but not for the 1-Hz twitch condition or in the inactive leg. CONCLUSIONS: Both tetanic and 3-Hz twitch contractions, but not 1-Hz twitch contractions, increased leg blood flow in humans. Because blood flow elevations induced by the 3-Hz contractions did not differ statistically from those induced by the tetanic contractions but were realized with less discomfort, this mode is preferable for therapeutic interventions. Because stimulation of the ipsilateral leg muscles did not change blood flow in the contralateral inactive leg, the muscles in the area of desired effect must be stimulated
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