Jens Troelsen

ORCID: 0000-0001-8105-0349
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About
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Research Areas
  • Obesity, Physical Activity, Diet
  • Physical Activity and Health
  • Urban Transport and Accessibility
  • Research in Social Sciences
  • Urban Green Space and Health
  • Children's Physical and Motor Development
  • Social and Educational Sciences
  • Education, Healthcare and Sociology Research
  • School Health and Nursing Education
  • Physical Education and Pedagogy
  • Cerebral Palsy and Movement Disorders
  • Family and Disability Support Research
  • Traffic and Road Safety
  • Innovative Approaches in Technology and Social Development
  • Health and Lifestyle Studies
  • Health disparities and outcomes
  • Inclusion and Disability in Education and Sport
  • Youth Development and Social Support
  • Sports and Physical Education Research
  • Infant Development and Preterm Care
  • Early Childhood Education and Development
  • Noise Effects and Management
  • Child Development and Digital Technology
  • Community Health and Development
  • Mobile Health and mHealth Applications

University of Southern Denmark
2016-2025

Frederiksberg Hospital
2023

Center for Clinical Research and Prevention
2023

University of Copenhagen
2023

Center for Clinical Research (United States)
2023

Oticon Medical (Denmark)
2020

Community Living
2018-2019

Living Systems (United States)
2013-2014

Technical University of Denmark
2002

From 19th to 22nd November 2018, 26 researchers representing nine countries and a variety of academic disciplines met in Snekkersten, Denmark, reach evidence-based consensus about physical activity older adults. It was recognised that the term ‘older adults’ represents highly heterogeneous population. encompasses those remain active healthy throughout life-course with high intrinsic capacity very old frail low capacity. The is drawn from wide range research methodologies within epidemiology,...

10.1136/bjsports-2018-100451 article EN cc-by-nc British Journal of Sports Medicine 2019-02-21

The emergence of portable global positioning system (GPS) receivers over the last 10 years has provided researchers with a means to objectively assess spatial position in free-living conditions. However, use GPS conditions is not without challenges and aim this study was test dynamic accuracy device under real-world environmental conditions, for four modes transport, using three data collection intervals. We selected routes on different bearings, passing through variation City Copenhagen,...

10.3389/fpubh.2014.00021 article EN cc-by Frontiers in Public Health 2014-03-10

Background: National and international strategies to increase physical activity emphasize environmental policy changes that can have widespread long-lasting impact. Evidence from multiple countries using comparable methods is required strengthen the evidence base for such initiatives. Because some environment could generalizable effects others may depend on each country’s context, only studies identify relevant differences. Methods: Currently 12 are participating in International Physical...

10.1123/jpah.10.4.581 article EN Journal of Physical Activity and Health 2013-05-01

Knowledge on domain-specific physical activity (PA) has the potential to advance public health interventions and inform new policies promoting children’s PA. The purpose of this study is identify assess domains (leisure, school, transport, home) subdomains (e.g., recess, playgrounds, urban green space) for week day moderate vigorous PA (MVPA) using objective measures investigate gender age differences. Participants included 367 Danish children adolescents (11–16 years, 52% girls) with...

10.1186/1479-5868-11-8 article EN cc-by International Journal of Behavioral Nutrition and Physical Activity 2014-01-01

Many children, in particular girls, do not reach the recommended amount of daily physical activity. School recess provides an opportunity for both boys and girls to be physically active, but barriers activity are well understood. This study explores gender differences children’s perceptions Based on socio-ecological model four types environmental were distinguished: natural, social, organizational environment. Data collected through 17 focus groups (at different schools) with total 111...

10.1186/1471-2458-14-639 article EN cc-by BMC Public Health 2014-06-23

Schoolyards are recognized as important settings for physical activity interventions during recess. However, varying results have been reported. This pilot study was conducted to gain in-depth knowledge of children's behavior recess using a mixed-methods approach combining quantitative GPS and accelerometer measurements with qualitative go-along group interviews participant observations. Data were collected three weekdays in public school Denmark. Eighty-one children (47 girls) wore an...

10.1371/journal.pone.0148786 article EN cc-by PLoS ONE 2016-02-09

Introduction: Being outdoors has a positive influence on health among children. Evidence in this area is limited and many studies have used self-reported measures. Objective context-specific assessment of physical activity patterns correlates, such as outdoor time, may progress field.Aims: To employ novel objective measures to assess age gender differences weekday behavior school-children (outdoor time MVPA) investigate associations between MVPA.Methods: A total 170 children had at least one...

10.3389/fpubh.2014.00020 article EN cc-by Frontiers in Public Health 2014-03-11

Accelerometry is increasingly being recognized as an accurate and reliable method to assess free-living physical activity (PA) in children adolescents. However, accelerometer data reduction criteria remain inconsistent, the consequences of excluding participants for example intervention studies are not well described. In this study, we investigated how different changed composition adolescent population retained analysis.Accelerometer (Actigraph GT3X), anthropometric measures survey were...

10.1186/1479-5868-10-140 article EN cc-by International Journal of Behavioral Nutrition and Physical Activity 2013-01-01

This study presents a novel method to assess context-specific physical activity patterns using accelerometer and GPS. The efficiency is investigated by providing descriptive results on the use of domains subdomains, assessing how much children's adolescents' daily time can be classified these subdomains. Four 11 subdomains were defined as important contexts for child adolescent behaviour. During weekdays (n=367) weekend days (n=178) majority children adolescents spent in active transport,...

10.1016/j.healthplace.2014.11.006 article EN cc-by-nc-nd Health & Place 2014-12-02

Background Multicomponent school-based interventions have the potential to reduce age-related decline in adolescents' physical activity (PA), yet there is not consistent evidence guide non-curricular and school environment interventions. The aim of this study was assess effectiveness a multicomponent environmental intervention, designed PA among adolescents. Methods A cluster randomized controlled trial conducted with 7 intervention control schools. Baseline measurements were carried out...

10.1371/journal.pone.0099369 article EN cc-by PLoS ONE 2014-06-12

Boys are more physically active than girls and the greatest gender difference in children’s physical activity is found institutional settings such as school recess. However, research on relations, performances practices that maintain gendered differences during recess still limited. Drawing a qualitative dataset social constructivist view, aim of this study was to investigate how construction patterns positions schoolyard lead self-organized play At 17 Danish schools total 460 minutes were...

10.1177/1356336x14561533 article EN European Physical Education Review 2014-12-10

The widespread ownership of digital devices among adolescents presents challenges and opportunities in schools, particularly during recess. This study aimed to examine the association screen use recess with physical activity behaviours. was based on a population-based cross-sectional including 1347 from 28 schools (2017-2018). Physical behaviours were assessed using thigh-attached accelerometers, worn 24/7 for up 6 weekdays 2 weekend days. We examined accelerometer data all periods, aligned...

10.1136/bmjph-2024-001150 article EN cc-by-nc BMJ Public Health 2025-01-01

In Norway and Denmark a sports infrastructure has been established with considerable financial support from official authorities. These policies have meant that the number of facilities in two countries is now among highest world, range geographical spread given population at large greater opportunity to take part sports. period growth, organized had privilege influencing standard many cases monopolizing their use, but 1990s, as participation sport diversified, issue became more...

10.1080/17430431003616399 article EN Sport in Society 2010-04-29

The aim of the School site, Play Spot, Active transport, Club fitness and Environment (SPACE) Study was to develop, document, assess a comprehensive intervention in local school districts that promote everyday physical activity (PA) among 11-15-year-old adolescents. study is based on social ecological framework, designed implement organizational structural changes environment. SPACE used cluster randomized controlled design. Twenty-one eligible schools Region Southern Denmark were matched...

10.1186/1471-2458-11-777 article EN cc-by BMC Public Health 2011-10-10

Facilitators and barriers to recess physical activity are not well understood. To date, research on has predominantly focused quantitative measures typically focusing a narrow set of predefined factors, often constructed by adults. really understand the factors affecting it is crucial observe listen children know how they engage in perceive activity. The aim this paper was gain knowledge children’s perceptions experiences influencing their behaviour during recess. Data were collected three...

10.1177/1356336x16664748 article EN European Physical Education Review 2016-09-01
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