Search results for "aktiivi"
showing 10 items of 1162 documents
Effects of a home-based rehabilitation program in community-dwelling older people after discharge from hospital: A subgroup analysis of a randomized …
2021
Objective: To examine whether pre-admission community mobility explains the effects of a rehabilitation program on physical performance and activity in older adults recently discharged from hospital. Design: A secondary analysis of a randomized controlled trial. Setting: Home and community. Participants: Community-dwelling adults aged ⩾60 years recovering from a lower limb or back injury, surgery or other disorder who were randomized to a rehabilitation ( n = 59) or standard care control ( n = 58) group. They were further classified into subgroups that were not planned a priori: (1) mild, (2) moderate, or (3) severe pre-admission restrictions in community mobility. Interventions: The 6-mont…
‘Drawing’ conclusions : Irish primary school children’s understanding of physical education and physical activity opportunities outside of school
2017
This study explores the relationship between primary school physical education and physical activity as sites for the practice of physical activity of Irish primary school children. Understanding how children make connections between physical activity sites is important in shaping physical education experiences that promote lifelong participation. Children’s (aged 8–11) awareness, knowledge, and understanding of physical activity and physical education were examined using participatory methods of ‘draw and write’ ( n = 135) and focus group interviews ( n = 34). In Phase 1, data collection focused on physical activity, while Phase 2 focused on physical education and connections between phys…
Sienipilven varjossa : ydinsodan pelko amerikkalaisessa kulttuurissa vuosina 1950-1963
2014
Toinen maailmansota päättyi kahteen Japaniin pudotettuun atomipommiin. Pian amerikkalaisten mielet valtasi huoli siitä, mitä atomipommi voisi tehdä, jos sellainen räjähtäisi Yhdysvaltain maaperällä. Kun Neuvostoliitto vuonna 1949, teki ensimmäisen onnistuneen ydinkokeensa, alkoivat ihmiset toden teolla jopa pelkäämään sitä mahdollisuutta, että se saattaisi hyökätä Yhdysvaltoihin atomipommein. Tätä pelkoa Yhdysvaltain hallinnon oli kitkettävä, jotta minkäänlaista paniikkia ei pääsisi syntymään. Ensimmäinen ohjekirjanen, jossa ihmisille opastettiin kuinka ydinräjähdyksen sattuessa tulisi toimia, ilmestyi vuonna 1950. Atomipommista siirryttiin pian huomattavasti tuhovoimaisempaan vetypommiin, …
Hälsotrender bland elever i svensk- och finskspråkiga grundskolor 1994-2014 : WHO:s skolelevsstudie (HBSC-Study)
2016
WHO:s skolelevsstudie (Health Behavior in School-aged Children (HBSC) Study) är internationellt en av de mest omfattande, långvariga och betydelsefulla undersökningarna om levnadsvanor bland skolungdomar. Undersökningen startade för drygt 30 år sedan och i detta nu deltar över 40 länder i Europa och Nordamerika. Nästa internationella datainsamling, som är den tionde i ordningen, genomförs år 2018. Nytt forskningsmaterial insamlas vart fjärde år. Forskare vid Jyväskylä universitets Forskningscenter för hälsofrämjande (Terveyden edistämisen tutkimuskeskus) ansvarar för WHO:s skolelevsstudie i Finland. För ungefär 20 år sedan började det givande samarbetet mellan Jyväskylä universitet och Samf…
Rethinking children’s physical activity interventions at school: A new context-specific approach
2023
Physical activity is important for children’s health. However, evidence suggests that many children and adults do not meet international physical activity recommendations. Current school-based interventions have had limited effect on physical activity and alternative approaches are needed. Context, which includes school setting, ethos, staff, and sociodemographic factors, is a key and largely ignored contributing factor to school-based physical activity intervention effectiveness, impacting in several interacting ways.ConceptualizationCurrent programs focus on tightly-constructed content that ignores the context in which the program will be delivered, thereby limiting effectiveness. We prop…
Catalytic conversion of glucose to 5-hydroxymethylfurfural over biomass-based activated carbon catalyst
2020
Selective and efficient dehydration of glucose to 5-hydroxymethylfurfural (HMF) has been widely explored research problem recently, especially from the perspective of more sustainable heterogeneous catalysts. In this study, activated carbon was first produced from a lignocellulosic waste material, birch sawdust. Novel heterogeneous catalysts were then prepared from activated carbon by adding Lewis or Brønsted acid sites on the carbon surface. Prepared catalysts were used to convert glucose to HMF in biphasic water:THF system at 160 °C. The highest HMF yield and selectivity, 51% and 78%, respectively, were obtained in 8 h with a catalytic mixture containing both Lewis and Brønsted acid sites…
A dual process model to predict adolescents’ screen time and physical activity
2021
OBJECTIVE: Many adolescents report a lack of physical activity (PA) and excess screen time (ST). Psychological theories aiming to understand these behaviours typically focus on predictors of only one behaviour. Yet, behaviour enactment is often a choice between options. This study sought to examine predictors of PA and ST in a single model. Variables were drawn from dual process models, which portray behaviour as the outcome of deliberative and automatic processes. DESIGN: 411 Finnish vocational school students (age 17-19) completed a survey, comprising variables from the Reasoned Action Approach (RAA) and automaticity pertaining to PA and ST, and self-reported PA and ST four weeks later. M…
Study of Ni, Pt, and Ru Catalysts on Wood-based Activated Carbon Supports and their Activity in Furfural Conversion to 2-Methylfuran
2018
Bio‐based chemicals can be produced from furfural through hydrotreatment. In this study, 2‐methylfuran (MF), a potential biofuel component, was produced with Pt, Ru, and Ni catalysts supported on wood‐based activated carbons. The catalytic hydrotreatment experiments were conducted in a batch reactor at 210–240 °C with 2‐propanol as solvent and 40 bar H2 pressure. Two types of activated carbon supports were prepared by carbonization and activation of lignocellulosic biomass (forest‐residue‐based birch and spruce from Finland). Both types of activated carbons were suitable as catalyst supports, giving up to 100 % furfural conversions. The most important factors affecting the MF yield were the…
Carbons from second generation biomass as sustainable supports for catalytic systems
2018
In this study activated carbons were produced from the wood of three different wood species (pine, birch, spruce). The resulting activated carbons were characterized in bulk for ash content, carbon content (elemental analyses), specific surface area, and pore size distribution, and at the surface by measuring the autogenerated pH and studying their structure by XPS. All the samples presented high surface areas and appeared to be mesoporous materials (mesopores >80%). The carbons were then used as support for AuPt nanoparticles and tested in the liquid phase oxidation of glycerol (GLY) and in the hydrogenation of levulinic acid (LA), two important chemicals from cellulose-based biomass. The …
Young People in the Social World of Physical Activities : Meanings and Barriers
2022
Physical inactivity has become one of the leading risk factors for non-communicable diseases (NCDs) and death worldwide. From the future perspective it is alarming that in the group of young people few meet the recommendations. In this respect, physical activity promotion in general and physical education have challenges and new approaches are needed. In this study, the theoretical framework is based on the physical activity relationship (PAR) approach and the barriers were grouped according to the ecological model. The aim of the study was firstly to present both the meanings and barriers of physical activity in a comprehensive Finnish population of 11–15 year old (n = 2728) and secondly t…