Search results for "luu"
showing 10 items of 614 documents
Alaraajojen luun mineraalipitoisuuden ja polven nivelruston väliset yhteydet postmenopausaalisilla naisilla
2011
Tämän poikkileikkaustutkimuksen tarkoituksena oli selvittää luuston (reisiluun kaula, lanneranka L2-L4) mineraalitiheysarvojen ja polven nivelruston (reisiluu, sääriluu) eheyttä kuvaavien dGEMRIC-arvojen välistä yhteyttä postmenopausaalisilla naisilla. Tutkimukseen rekrytoitiin 82 naista (keskimääräiseltä iältään 57,7 vuotta, SD 4,2) lehti-ilmoituksen perusteella. Sisäänottokriteerinä oli rtg:llä arvioidun Kellgren-Lawrence-luokituksen (K/L) mukaan ensimmäisen (K/L1) tai toisen (K/L2) asteen lievä polven nivelrikko. Reisiluun kaulan ja lannerangan (L2–L4) BMC-arvot mitattiin DXA-laitteistolla. Tutkimushenkilöillä ei ollut osteoporoosia, jonka kynnysarvona käytettiin T-arvoa >2,5. Tibian ja …
Relationship between lower limb neuromuscular performance and bone strength in postmenopausal women with mild knee osteoarthritis.
2014
Objectives: To investigate whether neuromuscular performance predicts lower limb bone strength in different lower limb sites in postmenopausal women with mild knee osteoarthritis (OA). Methods: Neuromuscular performance of 139 volunteer women aged 50-68 with mild knee OA was measured using maximal counter movement jump test, isometric knee flexion and extension force and figure-of-eight-running test. Femoral neck section modulus (Z, mm³) was determined by data obtained from dualenergy X-ray absorptiometry. Data obtained using peripheral quantitative computed tomography was used to asses distal tibia compressive (BSId, g2/cm4) and tibial mid-shaft bending (SSImaxmid, mm3) strength indices. R…
Reduced Peak Bone Mass in Young Adults with Low Motor Competence
2023
Although suboptimal bone health has been reported in children and adolescents with low motor competence (LMC), it is not known whether such deficits are present at the time of peak bone mass. We examined the impact of LMC on bone mineral density (BMD) in 1043 participants (484 females) from the Raine Cohort Study. Participants had motor competence assessed using the McCarron Assessment of Neuromuscular Development at 10, 14, and 17 years, and a whole body dual-energy X-ray absorptiometry scan at 20 years. Bone loading from physical activity was estimated from the International Physical Activity Questionnaire at the age of 17. The association between LMC and BMD was determined using general …
Social transmission in the wild can reduce predation pressure on novel prey signals
2021
Funder: Suomen Kulttuurirahasto (Finnish Cultural Foundation); doi: https://doi.org/10.13039/501100003125
DevOps ja sen vaikutukset järjestelmäevoluution hallintaan
2017
Tietojärjestelmät ovat integroituneet syvälle nyky-yhteiskuntaan. Ohjelmistot nähdään kriittisinä tukien organisaatioiden sisäistä toimintaa ja kilpailukykyä. Turbulenteista markkinoista johtuen organisaatiolta vaaditaan jatkuvaa muun- tautumista, jonka voidaan nähdä heijastuvan järjestelmävaatimusten muutok- seen. Näin ollen yhteiskunnan jatkuva muuttuminen sysää painetta yhä enene- vissä määrin ohjelmistoja tuottavien organisaatioiden toimintaan. Yhteiskun- nassa jatkuvan muutoksen paine kuvaa, että tietojärjestelmät ovat luonteeltaan evolutiivisia. Toisien sanoen järjestelmiä tulee jatkuvasti muuntaa, jotta niiden kyky toimia ympäristössään säilyy. Järjestelmäevoluutio kuvaa piirteitä, j…
The involvement of autistic children in early childhood education
2023
Research on the involvement of autistic children in daily activities in inclusive early childhood education is scarce. In Finland, all children, including autistic children, under the age of seven (before basic education) are entitled to participate in early childhood education and care. Children also attend compulsory, free-of-charge pre-primary education during the year before their basic education begins. Furthermore, attending early childhood education and care is not dependent whether a child requires day care because of their parents’ work. Autistic children attend early childhood education in inclusive day care centres. Thus, in this study, we examined the involvement of autistic chi…
How do educational reforms change the share of students in special education? Trends in special education in Finland
2019
Recent European and global trends in education have been to promote inclusive education and expand education, resulting in the increased provision of special education. In promoting inclusive education, recent special education reforms have also aimed to curtail the rise in identification rates for students in special education, for example, by focusing more on early support and discontinuing fiscal incentives to identify students with special educational needs. Using official special education statistics, we studied how Finland’s special education system reforms changed the share of students in special education. In addition, we examined variations in special education provisions among mu…
Stock market and exchange rate information in the Taylor rule : Evidence from OECD countries
2017
We analyze the effects of stock market and exchange rate information in a forward-looking Taylor rule for monthly data from 14 OECD countries during the years 1999–2016. Especially the stock market information in the form of dividend but also the currency market information in the form of real exchange rate are revealed to be relevant in Taylor rule for many of the countries examined by helping to strengthen the role of inflation and real economic activity deviations in the policy rule. In many cases the rule also seems to be opportunistic, i.e., the inflation target has been time-varying. peerReviewed
Speculation and lottery-like demand in cryptocurrency markets
2021
Abstract This is the first paper that explores lottery-like demand in cryptocurrency markets. Since recent research provides evidence that cryptocurrency returns appear to be short-memory processes, we modify Bali, Cakici and Whitelaw’s (2011) and Bali, Brown, Murray, and Tang’s (2017) MAX measure and employ a weekly forecast horizon and daily log-returns from the previous week to calculate the metric for our portfolio sorts. From an econometric point of view, this study proposes statistical tests that are robust to unknown dynamic dependency structures in the cryptocurrency data. Our results show that average raw and risk-adjusted return differences between cryptocurrencies in the lowest a…
On the stability of stablecoins
2021
This paper investigates the volatility processes of stablecoins and their potential stochastic interdependencies with Bitcoin volatility. We employ a novel approach to choose the optimal combination for the power law exponent and the minimum value for the volatilities bending the power law. Our results indicate that Bitcoin volatility is well-behaved in a statistical sense with a finite theoretical variance. Surprisingly, the volatilities of stablecoins are statistically unstable and contemporaneously respond to Bitcoin volatility. Also, whereas the volatilities of stablecoins are not Granger-causal for Bitcoin volatility, lagged Bitcoin volatility exhibits Granger-causal effects on the vol…