0000000000859271
AUTHOR
Susanne Kumpulainen
showing 4 related works from this author
The effects of motor imagery and Paired associative stimulation on cortical excitability
2009
ABSTRACT Kumpulainen, Susanne 2009. The effect of PAS and motor imagery on the excitability of the motor cortex. Department of Biology of Physical Activity, University of Jyväskylä. Master’s theses of biomechanics. 41 pages. The plasticity of the brain is an increasingly important topic for physical therapists interested in (re)learning and repair following injury. A number of potential endogenous and exogenous protocols have been developed with the improved understanding of the mechanisms of synaptic plasticity. The purpose of this study was twofold: First, the effect of motor imagery of plantarflexion on motor cortex excitability was investigated since it has been shown that motor imagery…
Modulation of plasticity of the soleus area of the motor cortex using paired associative stimulation
2015
Paired associative stimulation (PAS) repeatedly combines single somatosensory nerve stimuli with single transcranial magnetic stimuli to induce bidirectional changes in the excitability of the cortical projections to the target muscle. PAS and motor training have been shown to share common neural mechanisms, suggesting that PAS tests functionally relevant neuronal circuits. While PAS has been used extensively to target the hand area of the motor cortex, few studies have targeted the leg area of the motor cortex. The optimal interstimulus inter- val (ISI) to induce plasticity in the cortical projections to lower limbs is still not well established. Thus, the first purpose of this thesis was …
The effect of paired associative stimulation on fatigue resistance
2015
Paired associative stimulation (PAS) is a non-invasive stimulation method developed to induce bidirectional changes in the excitability of the cortical projections to the target muscles. However, very few studies have shown an association between changes in motor evoked potentials (MEP) after PAS and behavioral changes in healthy subjects. In the present study we hypothesized that the functional relevance of PAS can be seen during fatiguing exercise, since there is always a central contribution to the development of fatigue. Transcranial magnetic stimulation was applied over the motor cortex to measure changes in the MEPs of the soleus muscle before and after PAS. Furthermore, fatigue resis…
Hiihdon lajianalyysi ja ohjelmointi
2006
Kumpulainen, Susanne. 2006. Hiihdon lajianalyysi ja ohjelmointi. Seminaarityö. Liikuntabiologian laitos, Jyväskylän yliopisto. Hiihtoa on harrastettu Suomessa yli sata vuotta, jonka aikana se on kehittynyt ja monipuolistuinut nykyiseen muotoonsa. Nykyisin hiihdossa kilpaillaan kahdella tyylillä ja n. kilometrin pituisista sprinttimatkoista pitkiin 50 km:n matkoihin. Massahiihtokilpailuissa matkat ovat vieläkin pidempiä. Lajin monipuolistumisen myötä myös harjoittelu ja ohjelmointi ovat kehittyneet. Hiihdon tärkeimmän ominaisuuden aerobisen energiantuoton ja VO2max:n ohella tärkeiksi ominaisuuksiksi ovat nousseet anaerobinen energiantuottokyky ja hyvä hermolihasjärjestelmän toiminta. Hiihtäj…