Search results for "OAI"
showing 10 items of 157 documents
Reliability of transcranial magnetic stimulation and H-reflex measurement during balance perturbation tasks
2022
Following ankle movement, posterior balance perturbation evokes short- (SLR ∼30–50 ms), medium- (MLR ∼50–60 ms), and long-latency responses (LLR ∼70–90 ms) in soleus muscle before voluntary muscle contraction. Transcranial magnetic stimulation (TMS) and Hoffmann-reflex (H-reflex) measurements can provide insight into the contributions of corticospinal and spinal mechanisms to each response. Motor evoked potential (MEP) and H-reflex responses have shown good reliability in some dynamic muscle contraction tasks. However, it is still unclear how reliable these methods are in dynamic balance perturbation and corticospinal modulation during long amplitude balance perturbation tasks. 14 subjects …
Lihasväsytyksen vaikutus reaktionopeuteen multitasking tilanteessa
2012
Hyvän aerobisen kunnon tiedetään olevan luotettava mittari terveyden arviointiin. Fyysisesti aktiiviset henkilöt kestävät lihasväsytystä pidempään kuin harjoittelemattomat henkilöt. Kuitenkin lihasväsytyksen kokeminen ja sen vaikutukset ovat yksilöllisiä. Se miten fyysinen väsytys vaikuttaa normaaliin ajattelukykyyn ja päätöksentekoon ei ole vielä täysin selvillä. Eräs keino tämän havaitsemiseen on tarkkailla reaktioaikoja fyysisen väsytyksen aikana. Tässä pro gradu -työssä tutkittiin kuinka fyysinen väsytys vaikuttaa reaktioaikoihin muodostamalla multitasking-tilanne fyysisen väsytyksen ja reaktiotestien välille. Mittaustilanteessa väsytys suoritettiin samanaikaisesti reaktiotestien kanssa…
Hoffa’s fat pad thickness: a measurement method with sagittal MRI sequences
2021
Abstract Background Hoffa’s fat pad is a structure located within the fibrous joint capsule of the knee joint, but outside the synovial cavity. It plays an important biomechanical and metabolic role in knee joint, reducing the impact of forces generated by loading and producing cytokines. Changes in its size can induce modifications in the knee homeostasis. However, a great variability exists regarding its measurements. This work aims to evaluate the reliability of a measurement method of Hoffa’s fat pad dimensions through MRI. Methods 3T sagittal IW 2D TSE fat-suppressed MRI sequences, taken from the OAI (Osteoarthritis initiative) database, of 191 male and female patients, aged between 40…
Sujuvaksi lukijaksi : lukemisvaikeuksien arvioinnista kohti näyttöön perustuvia interventioita
2014
Community divided : adaptation and aversion towards the spent nuclear fuel repository in Eurajoki and its neighbouring municipalities
2010
Selective Fatty Acid Retention and Turnover in the Freshwater Amphipod Pallaseopsis quadrispinosa
2021
Gammarid amphipods are a crucial link connecting primary producers with secondary consumers, but little is known about their nutritional ecology. Here we asked how starvation and subsequent feeding on different nutritional quality algae influences fatty acid retention, compound-specific isotopic carbon fractionation, and biosynthesis of omega-3 and omega-6 polyunsaturated fatty acids (PUFA) in the relict gammarid amphipod Pallaseopsis quadrispinosa. The fatty acid profiles of P. quadrispinosa closely matched with those of the dietary green algae after only seven days of refeeding, whereas fatty acid patterns of P. quadrispinosa were less consistent with those of the diatom diet. This was ma…
Sääntöpohjaiset tiedonlouhintamenetelmät ohjelmistojen ymmärtämisen tukena
2013
Teknologian nopean kehityksen myötä digitaalisessa muodossa oleva tietomäärä kasvaa kaikkialla. Tietovarastojen koon kasvaessa tarpeellista tietoa tallennettuun tietomäärään nähden on hyvin vähän ja tärkeän informaation löytäminen on haasteellista. Tähän ongelmaan ratkaisuna on tiedonlouhintatekniikat. Tiedonlouhintaa käytettäessä tavoitteena on löytää datajoukosta uusia tuloksia ja näkökohtia tiettyyn kyseessä olevaan ongelmaan. Tutkielmassa keskitytään ohjelmistoaineistojen louhintaan, jonka avulla voidaan saada hyödyllistä informaatiota ohjelmistoprojektin vaiheista ja siinä tapahtuvista virheistä ja niiden ehkäisemisestä. Rapidly expanding and evolving technology makes digitally stored …
Open sourcing digital heritage : digital surrogates, museums and knowledge management in the age of open networks
2012
I study the emergence of traditional online activities of the museums and their fears in the vivid and multifaceted Internet and how the open Internet is setting out to compete with museums. The second main topic of this work is the role of technology in the openness of digital heritage. Technology is always present when dealing with digital heritage, and understanding the technical framework is essential when evaluating, for example, long-term preservation issues or accessibility. I used three different kinds of sources in my study: literary, case studies and application development. First, I have read studies that are related to digital heritage: museology literature, museum informatics l…
Assessing reading and online research comprehension: Do difficulties in attention and executive function matter?
2021
This study evaluated the relation between sixth graders' (N = 426) teacher-rated difficulties in attention and executive function (EF) and their comprehension skills. Reading comprehension was assessed with a multiple-choice task and online research and comprehension (ORC) with a problem-solving task. The analyses were controlled for gender, reading fluency and nonverbal reasoning. To investigate differences in students' performance between the tasks, comprehension skills in the multiple-choice task were also controlled for in the ORC task. Structural equation models showed that teacher-rated attention and EF difficulties were related to students' performance more in the problem-solving tas…