NobleBlocks

Örebro University

UniversityÖrebro, Sweden

Research output, citation impact, and the most-cited recent papers from Örebro University (Sweden). Aggregated across the NobleBlocks index of 300M+ scholarly works.

Total works
21.9K
Citations
1.0M
h-index
305
i10-index
18.2K
Also known as
Örebro UniversitetÖrebro UniversityÖrebro universitetÖrebron yliopisto

Top-cited papers from Örebro University

Enhanced Recovery After Surgery
Olle Ljungqvist, Michael J. Scott, Kenneth C. H. Fearon
2017· JAMA Surgery3.3Kdoi:10.1001/jamasurg.2016.4952

Importance: Enhanced Recovery After Surgery (ERAS) is a paradigm shift in perioperative care, resulting in substantial improvements in clinical outcomes and cost savings. Observations: Enhanced Recovery After Surgery is a multimodal, multidisciplinary approach to the care of the surgical patient. Enhanced Recovery After Surgery process implementation involves a team consisting of surgeons, anesthetists, an ERAS coordinator (often a nurse or a physician assistant), and staff from units that care for the surgical patient. The care protocol is based on published evidence. The ERAS Society, an international nonprofit professional society that promotes, develops, and implements ERAS programs, publishes updated guidelines for many operations, such as evidence-based modern care changes from overnight fasting to carbohydrate drinks 2 hours before surgery, minimally invasive approaches instead of large incisions, management of fluids to seek balance rather than large volumes of intravenous fluids, avoidance of or early removal of drains and tubes, early mobilization, and serving of drinks and food the day of the operation. Enhanced Recovery After Surgery protocols have resulted in shorter length of hospital stay by 30% to 50% and similar reductions in complications, while readmissions and costs are reduced. The elements of the protocol reduce the stress of the operation to retain anabolic homeostasis. The ERAS Society conducts structured implementation programs that are currently in use in more than 20 countries. Local ERAS teams from hospitals are trained to implement ERAS processes. Audit of process compliance and patient outcomes are important features. Enhanced Recovery After Surgery started mainly with colorectal surgery but has been shown to improve outcomes in almost all major surgical specialties. Conclusions and Relevance: Enhanced Recovery After Surgery is an evidence-based care improvement process for surgical patients. Implementation of ERAS programs results in major improvements in clinical outcomes and cost, making ERAS an important example of value-based care applied to surgery.

Parental Monitoring: A Reinterpretation
Håkan Stattin, Margaret Kerr
2000· Child Development2.3Kdoi:10.1111/1467-8624.00210

Monitoring (tracking and surveillance) of children's behavior is considered an essential parenting skill. Numerous studies show that well-monitored youths are less involved in delinquency and other normbreaking behaviors, and scholars conclude that parents should track their children more carefully. This study questions that conclusion. We point out that monitoring measures typically assess parents' knowledge but not its source, and parents could get knowledge from their children's free disclosure of information as well as their own active surveillance efforts. In our study of 703 14-year-olds in central Sweden and their parents, parental knowledge came mainly from child disclosure, and child disclosure was the source of knowledge that was most closely linked to broad and narrow measures of delinquency (normbreaking and police contact). These results held for both children's and parents' reports, for both sexes, and were independent of whether the children were exhibiting problem behavior or not. We conclude that tracking and surveillance is not the best prescription for parental behavior and that a new prescription must rest on an understanding of the factors that determine child disclosure.

A Review of Psychological Risk Factors in Back and Neck Pain
Steven J. Linton
2000· Spine1.8Kdoi:10.1097/00007632-200005010-00017

STUDY DESIGN: The literature on psychological factors in neck and back pain was systematically searched and reviewed. OBJECTIVES: To summarize current knowledge concerning the role of psychological variables in the etiology and development of neck and back pain. SUMMARY OF BACKGROUND DATA: Recent conceptions of spinal pain, especially chronic back pain, have highlighted the role of psychological factors. Numerous studies subsequently have examined the effects of various psychological factors in neck and back pain. There is a need to review this material to ascertain what conclusions may be drawn. METHODS: Medical and psychological databases and cross-referencing were used to locate 913 potentially relevant articles. A table of 37 studies was constructed, consisting only of studies with prospective designs to ensure quality. Each study was reviewed for the population studied, the psychological predictor variables, and the outcome. RESULTS: The available literature indicated a clear link between psychological variables and neck and back pain. The prospective studies indicated that psychological variables were related to the onset of pain, and to acute, subacute, and chronic pain. Stress, distress, or anxiety as well as mood and emotions, cognitive functioning, and pain behavior all were found to be significant factors. Personality factors produced mixed results. Although the level of evidence was low, abuse also was found to be a potentially significant factor. CONCLUSIONS: Psychological factors play a significant role not only in chronic pain, but also in the etiology of acute pain, particularly in the transition to chronic problems. Specific types of psychological variables emerge and may be important in distinct developmental time frames, also implying that assessment and intervention need to reflect these variables. Still, psychological factors account for only a portion of the variance, thereby highlighting the multidimensional view. Because the methodologic quality of the studies varied considerably, future research should focus on improving quality and addressing new questions such as the mechanism, the developmental time factor, and the relevance that these risk factors have for intervention.

Chlamydia, gonorrhoea, trichomoniasis and syphilis: global prevalence and incidence estimates, 2016
Jane Rowley, Stephen Vander Hoorn, Eline L. Korenromp, Nicola Low +4 more
2019· Bulletin of the World Health Organization1.6Kdoi:10.2471/blt.18.228486

OBJECTIVE: To generate estimates of the global prevalence and incidence of urogenital infection with chlamydia, gonorrhoea, trichomoniasis and syphilis in women and men, aged 15-49 years, in 2016. METHODS: For chlamydia, gonorrhoea and trichomoniasis, we systematically searched for studies conducted between 2009 and 2016 reporting prevalence. We also consulted regional experts. To generate estimates, we used Bayesian meta-analysis. For syphilis, we aggregated the national estimates generated by using Spectrum-STI. FINDINGS: For chlamydia, gonorrhoea and/or trichomoniasis, 130 studies were eligible. For syphilis, the Spectrum-STI database contained 978 data points for the same period. The 2016 global prevalence estimates in women were: chlamydia 3.8% (95% uncertainty interval, UI: 3.3-4.5); gonorrhoea 0.9% (95% UI: 0.7-1.1); trichomoniasis 5.3% (95% UI:4.0-7.2); and syphilis 0.5% (95% UI: 0.4-0.6). In men prevalence estimates were: chlamydia 2.7% (95% UI: 1.9-3.7); gonorrhoea 0.7% (95% UI: 0.5-1.1); trichomoniasis 0.6% (95% UI: 0.4-0.9); and syphilis 0.5% (95% UI: 0.4-0.6). Total estimated incident cases were 376.4 million: 127.2 million (95% UI: 95.1-165.9 million) chlamydia cases; 86.9 million (95% UI: 58.6-123.4 million) gonorrhoea cases; 156.0 million (95% UI: 103.4-231.2 million) trichomoniasis cases; and 6.3 million (95% UI: 5.5-7.1 million) syphilis cases. CONCLUSION: 1.

What parents know, how they know it, and several forms of adolescent adjustment: Further support for a reinterpretation of monitoring.
Margaret Kerr, Håkan Stattin
2000· Developmental Psychology1.6Kdoi:10.1037/0012-1649.36.3.366

Parental monitoring has been conceptualized as tracking and surveillance but operationalized as knowledge of daily activities. This study tested the tracking and surveillance explanation of why parental knowledge is linked to better adolescent adjustment. Participants were 1,186 14-year-olds in central Sweden and their parents. The results supported and extended a reinterpretation of parental monitoring (H. Stattin & M. Kerr, in press). Across sex and informant, high parental knowledge was linked to multiple measures of good adjustment. But children's spontaneous disclosure of information explained more of these relations than parents' tracking and surveillance efforts did. Parents' control efforts were related to good adjustment only after the child's feelings of being controlled, which were linked to poor adjustment, were partialed out. The findings suggest that parents' tracking and surveillance efforts are not as effective as previously thought.

WHY “WHAT WORKS” WON’T WORK: EVIDENCE‐BASED PRACTICE AND THE DEMOCRATIC DEFICIT IN EDUCATIONAL RESEARCH
Gert Biesta
2007· Educational Theory1.6Kdoi:10.1111/j.1741-5446.2006.00241.x

A bstract In this essay, Gert Biesta provides a critical analysis of the idea of evidence‐based practice and the ways in which it has been promoted and implemented in the field of education, focusing on the tension between scientific and democratic control over educational practice and research. Biesta examines three key assumptions of evidence‐based education: first, the extent to which educational practice can be compared to the practice of medicine, the field in which evidence‐based practice was first developed; second, the role of knowledge in professional actions, with special attention to what kind of epistemology is appropriate for professional practices that wish to be informed by the outcomes of research; and third, the expectations about the practical role of research implicit in the idea of evidence‐based education. Biesta concludes that evidence‐based practice provides a framework for understanding the role of research in educational practice that not only restricts the scope of decision making to questions about effectivity and effectiveness, but that also restricts the opportunities for participation in educational decision making. He argues that we must expand our views about the interrelations among research, policy, and practice to keep in view education as a thoroughly moral and political practice that requires continuous democratic contestation and deliberation.

Roots and Associated Fungi Drive Long-Term Carbon Sequestration in Boreal Forest
Karina E. Clemmensen, Adam Bahr, Otso Ovaskainen, A. Dahlberg +4 more
2013· Science1.5Kdoi:10.1126/science.1231923

Boreal forest soils function as a terrestrial net sink in the global carbon cycle. The prevailing dogma has focused on aboveground plant litter as a principal source of soil organic matter. Using (14)C bomb-carbon modeling, we show that 50 to 70% of stored carbon in a chronosequence of boreal forested islands derives from roots and root-associated microorganisms. Fungal biomarkers indicate impaired degradation and preservation of fungal residues in late successional forests. Furthermore, 454 pyrosequencing of molecular barcodes, in conjunction with stable isotope analyses, highlights root-associated fungi as important regulators of ecosystem carbon dynamics. Our results suggest an alternative mechanism for the accumulation of organic matter in boreal forests during succession in the long-term absence of disturbance.

The World Federation of ADHD International Consensus Statement: 208 Evidence-based conclusions about the disorder
Stephen V. Faraone, Tobias Banaschewski, David Coghill, Yi Zheng +4 more
2021· Neuroscience & Biobehavioral Reviews1.4Kdoi:10.1016/j.neubiorev.2021.01.022

BACKGROUND: Misconceptions about ADHD stigmatize affected people, reduce credibility of providers, and prevent/delay treatment. To challenge misconceptions, we curated findings with strong evidence base. METHODS: We reviewed studies with more than 2000 participants or meta-analyses from five or more studies or 2000 or more participants. We excluded meta-analyses that did not assess publication bias, except for meta-analyses of prevalence. For network meta-analyses we required comparison adjusted funnel plots. We excluded treatment studies with waiting-list or treatment as usual controls. From this literature, we extracted evidence-based assertions about the disorder. RESULTS: We generated 208 empirically supported statements about ADHD. The status of the included statements as empirically supported is approved by 80 authors from 27 countries and 6 continents. The contents of the manuscript are endorsed by 366 people who have read this document and agree with its contents. CONCLUSIONS: Many findings in ADHD are supported by meta-analysis. These allow for firm statements about the nature, course, outcome causes, and treatments for disorders that are useful for reducing misconceptions and stigma.

Guidelines for enhanced recovery after lung surgery: recommendations of the Enhanced Recovery After Surgery (ERAS®) Society and the European Society of Thoracic Surgeons (ESTS)
Tim Batchelor, Neil Rasburn, Etienne Abdelnour‐Berchtold, Alessandro Brunelli +4 more
2018· European Journal of Cardio-Thoracic Surgery1.3Kdoi:10.1093/ejcts/ezy301

Enhanced recovery after surgery is well established in specialties such as colorectal surgery. It is achieved through the introduction of multiple evidence-based perioperative measures that aim to diminish postoperative organ dysfunction while facilitating recovery. This review aims to present consensus recommendations for the optimal perioperative management of patients undergoing thoracic surgery (principally lung resection). A systematic review of meta-analyses, randomized controlled trials, large non-randomized studies and reviews was conducted for each protocol element. Smaller prospective and retrospective cohort studies were considered only when higher-level evidence was unavailable. The quality of the evidence base was graded by the authors and used to form consensus recommendations for each topic. Development of these recommendations was endorsed by the Enhanced Recovery after Surgery Society and the European Society for Thoracic Surgery. Recommendations were developed for a total of 45 enhanced recovery items covering topics related to preadmission, admission, intraoperative care and postoperative care. Most are based on good-quality studies. In some instances, good-quality data were not available, and subsequent recommendations are generic or based on data extrapolated from other specialties. In other cases, no recommendation can currently be made because either equipoise exists or there is a lack of available evidence. Recommendations are based not only on the quality of the evidence but also on the balance between desirable and undesirable effects. Key recommendations include preoperative counselling, nutritional screening, smoking cessation, prehabilitation for high-risk patients, avoidance of fasting, carbohydrate loading, avoidance of preoperative sedatives, venous thromboembolism prophylaxis, prevention of hypothermia, short-acting anaesthetics to facilitate early emergence, regional anaesthesia, nausea and vomiting control, opioid-sparing analgesia, euvolemic fluid management, minimally invasive surgery, early chest drain removal, avoidance of urinary catheters and early mobilization after surgery. These guidelines outline recommendations for the perioperative management of patients undergoing lung surgery based on the best available evidence. As the recommendation grade for most of the elements is strong, the use of a systematic perioperative care pathway has the potential to improve outcomes after surgery.

Fear-avoidance model of chronic musculoskeletal pain: 12 years on
Johan W.S. Vlaeyen, Steven J. Linton
2012· Pain1.2Kdoi:10.1016/j.pain.2011.12.009

sponsorship: Johan W.S. Vlaeyen was supported by the Social Sciences Research Council of the Netherlands (NWO), and the Research Foundation, Flanders, Belgium (FWO Vlaanderen). Steven J. Linton received grants from the Swedish Council for Working Life and Social Research. (Social Sciences Research Council of the Netherlands (NWO), Research Foundation, Flanders, Belgium (FWO Vlaanderen), Swedish Council for Working Life and Social Research)

Dynamics of the human gut microbiome in inflammatory bowel disease
Jonas Halfvarson, Colin Brislawn, Regina Lamendella, Yoshiki Vázquez‐Baeza +4 more
2017· Nature Microbiology1.2Kdoi:10.1038/nmicrobiol.2017.4

Inflammatory bowel disease (IBD) is characterized by flares of inflammation with a periodic need for increased medication and sometimes even surgery. The aetiology of IBD is partly attributed to a deregulated immune response to gut microbiome dysbiosis. Cross-sectional studies have revealed microbial signatures for different IBD subtypes, including ulcerative colitis, colonic Crohn's disease and ileal Crohn's disease. Although IBD is dynamic, microbiome studies have primarily focused on single time points or a few individuals. Here, we dissect the long-term dynamic behaviour of the gut microbiome in IBD and differentiate this from normal variation. Microbiomes of IBD subjects fluctuate more than those of healthy individuals, based on deviation from a newly defined healthy plane (HP). Ileal Crohn's disease subjects deviated most from the HP, especially subjects with surgical resection. Intriguingly, the microbiomes of some IBD subjects periodically visited the HP then deviated away from it. Inflammation was not directly correlated with distance to the healthy plane, but there was some correlation between observed dramatic fluctuations in the gut microbiome and intensified medication due to a flare of the disease. These results will help guide therapies that will redirect the gut microbiome towards a healthy state and maintain remission in IBD.

Genetics of attention deficit hyperactivity disorder
Stephen V. Faraone, Henrik Larsson
2018· Molecular Psychiatry1.2Kdoi:10.1038/s41380-018-0070-0

Decades of research show that genes play an vital role in the etiology of attention deficit hyperactivity disorder (ADHD) and its comorbidity with other disorders. Family, twin, and adoption studies show that ADHD runs in families. ADHD's high heritability of 74% motivated the search for ADHD susceptibility genes. Genetic linkage studies show that the effects of DNA risk variants on ADHD must, individually, be very small. Genome-wide association studies (GWAS) have implicated several genetic loci at the genome-wide level of statistical significance. These studies also show that about a third of ADHD's heritability is due to a polygenic component comprising many common variants each having small effects. From studies of copy number variants we have also learned that the rare insertions or deletions account for part of ADHD's heritability. These findings have implicated new biological pathways that may eventually have implications for treatment development.

Political participation and civic engagement: Towards a new typology
Joakim Ekman, Erik Amnå
2012· Human Affairs1.1Kdoi:10.2478/s13374-012-0024-1

Abstract Reviewing the literature on political participation and civic engagement, the article offers a critical examination of different conceptual frameworks. Drawing on previous definitions and operationalisations, a new typology for political participation and civic engagement is developed, highlighting the multidimensionality of both concepts. In particular, it makes a clear distinction between manifest “political participation” (including formal political behaviour as well as protest or extra-parliamentary political action) and less direct or “latent” forms of participation, conceptualized here as “civic engagement” and “social involvement”. The article argues that the notion of “latent” forms of participation is crucial to understand new forms of political behaviour and the prospects for political participation in different countries. Due to these innovations it contributes to a much-needed theoretical development within the literature on political participation and citizen engagement.

Decreased gut microbiota diversity, delayed Bacteroidetes colonisation and reduced Th1 responses in infants delivered by Caesarean section
Hedvig E. Jakobsson, Thomas Abrahamsson, Maria C. Jenmalm, Keith Harris +4 more
2013· Gut985doi:10.1136/gutjnl-2012-303249

OBJECTIVE: The early intestinal microbiota exerts important stimuli for immune development, and a reduced microbial exposure as well as caesarean section (CS) has been associated with the development of allergic disease. Here we address how microbiota development in infants is affected by mode of delivery, and relate differences in colonisation patterns to the maturation of a balanced Th1/Th2 immune response. DESIGN: The postnatal intestinal colonisation pattern was investigated in 24 infants, born vaginally (15) or by CS (nine). The intestinal microbiota were characterised using pyrosequencing of 16S rRNA genes at 1 week and 1, 3, 6, 12 and 24 months after birth. Venous blood levels of Th1- and Th2-associated chemokines were measured at 6, 12 and 24 months. RESULTS: Infants born through CS had lower total microbiota diversity during the first 2 years of life. CS delivered infants also had a lower abundance and diversity of the Bacteroidetes phylum and were less often colonised with the Bacteroidetes phylum. Infants born through CS had significantly lower levels of the Th1-associated chemokines CXCL10 and CXCL11 in blood. CONCLUSIONS: CS was associated with a lower total microbial diversity, delayed colonisation of the Bacteroidetes phylum and reduced Th1 responses during the first 2 years of life.

Usefulness of the Umbrella Species Concept as a Conservation Tool
Jean‐Michel Roberge, Per Angelstam
2004· Conservation Biology977doi:10.1111/j.1523-1739.2004.00450.x

Abstract: In the face of limited funding, knowledge, and time for action, conservation efforts often rely on shortcuts for the maintenance of biodiversity. The umbrella species concept—proposed as a way to use species requirements as a basis for conservation planning—has recently received growing attention. We reviewed the literature to evaluate the concept's general usefulness. An umbrella species is defined as a species whose conservation is expected to confer protection to a large number of naturally co‐occurring species. This concept has been proposed as a tool for determining the minimum size for conservation areas, selecting sites to be included in reserve networks, and setting minimum standards for the composition, structure, and processes of ecosystems. Among the species suggested as potential umbrellas, most are large mammals and birds, but invertebrates are increasingly being considered. Eighteen research papers, most of which were based on hypothetical reserves or conservation networks, have provided evaluations of umbrella species schemes. These show that single‐species umbrellas cannot ensure the conservation of all co‐occurring species because some species are inevitably limited by ecological factors that are not relevant to the umbrella species. Moreover, they provide evidence that umbrella species from a given higher taxon may not necessarily confer protection to assemblages from other taxa. On the other hand, multi‐species strategies based on systematic selection procedures (e.g., the focal species approach) offer more compelling evidence of the usefulness of the concept. Evaluations of umbrella species schemes could be improved by including measures of population viability and data from many years, as well as by comparing the efficiency of the proposed scheme with alternative management strategies.

Explaining Society: Critical Realism in the Social Sciences
Berth Danermark, Mats Ekström, Jan Ch. Karlsson
2001972

Cover -- Half Title -- Series Page -- Title Page -- Copyright Page -- Dedication -- Contents -- List of illustrations -- Preface -- 1 Introduction -- Part I: Introduction to critical realism -- 2 Science and reality -- 3 Conceptual abstraction and causality -- Part II: Methodological implications -- 4 Social structures and human agency -- 5 Generalization, scientific inference, and models for explanatory social science -- 6 Theory in the methodology of social science -- 7 Critical methodological pluralism - intensive and extensive research design and interdisciplinarity -- 8 Social science and practice -- 9 Conclusion -- Glossary -- Index.

Instantaneous Wave-free Ratio versus Fractional Flow Reserve to Guide PCI
Matthias Götberg, Evald Høj Christiansen, Ingibjörg Jóna Guðmundsdóttir, Lennart Sandhall +4 more
2017· New England Journal of Medicine959doi:10.1056/nejmoa1616540

BACKGROUND: The instantaneous wave-free ratio (iFR) is an index used to assess the severity of coronary-artery stenosis. The index has been tested against fractional flow reserve (FFR) in small trials, and the two measures have been found to have similar diagnostic accuracy. However, studies of clinical outcomes associated with the use of iFR are lacking. We aimed to evaluate whether iFR is noninferior to FFR with respect to the rate of subsequent major adverse cardiac events. METHODS: We conducted a multicenter, randomized, controlled, open-label clinical trial using the Swedish Coronary Angiography and Angioplasty Registry for enrollment. A total of 2037 participants with stable angina or an acute coronary syndrome who had an indication for physiologically guided assessment of coronary-artery stenosis were randomly assigned to undergo revascularization guided by either iFR or FFR. The primary end point was the rate of a composite of death from any cause, nonfatal myocardial infarction, or unplanned revascularization within 12 months after the procedure. RESULTS: A primary end-point event occurred in 68 of 1012 patients (6.7%) in the iFR group and in 61 of 1007 (6.1%) in the FFR group (difference in event rates, 0.7 percentage points; 95% confidence interval [CI], -1.5 to 2.8; P=0.007 for noninferiority; hazard ratio, 1.12; 95% CI, 0.79 to 1.58; P=0.53); the upper limit of the 95% confidence interval for the difference in event rates fell within the prespecified noninferiority margin of 3.2 percentage points. The results were similar among major subgroups. The rates of myocardial infarction, target-lesion revascularization, restenosis, and stent thrombosis did not differ significantly between the two groups. A significantly higher proportion of patients in the FFR group than in the iFR group reported chest discomfort during the procedure. CONCLUSIONS: Among patients with stable angina or an acute coronary syndrome, an iFR-guided revascularization strategy was noninferior to an FFR-guided revascularization strategy with respect to the rate of major adverse cardiac events at 12 months. (Funded by Philips Volcano; iFR SWEDEHEART ClinicalTrials.gov number, NCT02166736 .).

ECG analysis: a new approach in human identification
Lena Biel, Ola Pettersson, L. Philipson, Peter Wide
2001· IEEE Transactions on Instrumentation and Measurement945doi:10.1109/19.930458

A new approach in human identification is investigated. For this purpose, a standard 12-lead electrocardiogram (ECG) recorded during rest is used. Selected features extracted from the ECG are used to identify a person in a predetermined group. Multivariate analysis is used for the identification task. Experiments show that it is possible to identify a person by features extracted from one lead only. Hence, only three electrodes have to be attached on the person to be identified. This makes the method applicable without too much effort.

Physical Activity Levels and Patterns of 9- and 15-yr-Old European Children
Chris Riddoch, Lars Bo Andersen, Niels Wedderkopp, Maarike Harro +4 more
2004· Medicine & Science in Sports & Exercise897doi:10.1249/01.mss.0000106174.43932.92

PURPOSE: The purpose of this study was to assess physical activity levels and patterns from children participating in the European Youth Heart Study (EYHS). Very limited physical activity data exist that have been collected from representative samples of children and even fewer data collected where physical activity has been measured using objective methods. METHODS: Subjects were 2185 children aged 9 and 15 yr from Denmark, Portugal, Estonia, and Norway. Physical activity data were obtained using MTI (formerly CSA) accelerometers. The primary outcome variable was established as the child's activity level (accelerometer counts per minute). Children wore the accelerometer for 3 or 4 d, which included at least 1 weekend day. RESULTS: Boys were more active than girls at age 9 (784 +/- 282 vs 649 +/- 204 counts.min-1) and 15 yr (615 +/- 228 vs 491 +/- 163 counts.min-1). With respect to time engaged in moderate-intensity activity, gender differences were apparent at age 9 (192 +/- 66 vs 160 +/- 54 min.d-1) and age 15 (99 +/- 45 vs 73 +/- 32 min.d-1). At age 9, the great majority of boys and girls achieved current health-related physical activity recommendations (97.4% and 97.6%, respectively). At age 15, fewer children achieved the guidelines and gender differences were apparent (boys 81.9% vs girls 62.0%). CONCLUSIONS: Accelerometers are a feasible and accurate instrument for use in large epidemiological studies of children's activity. Boys tend to be more active than girls, and there is a marked reduction in activity over the adolescent years. The great majority of younger children achieve current physical activity recommendations, whereas fewer older children do so-especially older girls.

Hope and climate change: the importance of hope for environmental engagement among young people
Maria Ojala
2012· Environmental Education Research882doi:10.1080/13504622.2011.637157

Although many young people think climate change is an important societal issue, studies indicate that pessimism is quite common. Finding ways to instill hope could therefore be seen as vital. However, is hope positively related to engagement or is it only a sign of illusory optimism? The aim of the study was to explore if hope concerning climate change has a significant relation to pro-environmental behavior as well as an impact on behavior when controlling for already well-known predictors such as values, social influence, knowledge, and gender. Two questionnaire studies were performed, one with a group of Swedish teenagers (n = 723) and one with a group of Swedish young adults (n = 381). ‘Constructive’ hope had a unique positive influence on pro-environmental behavior. Hope based on denial, however, was negatively correlated with pro-environmental behavior in the two samples and was a significant negative predictor in the teenage group. The conclusion is that hope is not only a pleasant feeling but could also work as a motivational force, if one controls for denial. Implications for education concerning sustainable development are discussed.