Erlingur Johannsson
University of Iceland
Publications 81
#1Julianne D. van der Berg (PHRI: Public Health Research Institute)H-Index: 7
#2Coen D. A. Stehouwer (Maastricht University Medical Centre)H-Index: 108
Last.Annemarie Koster (PHRI: Public Health Research Institute)H-Index: 46
view all 16 authors...
ABSTRACTDynamic sitting, such as fidgeting and desk work, might be associated with health, but remains difficult to identify out of accelerometry data. We examined, in a laboratory study, whether dynamic sitting can be identified out of triaxial activity counts. Among 18 participants (56% men, 27.3 ± 6.5 years), up to 236 counts per minute were recorded in the anteroposterior and mediolateral axes during dynamic sitting using a hip-worn accelerometer. Subsequently, we examined in 621 participant...
#1Elvar Smari Sævarsson (University of Iceland)H-Index: 2
#2Sigridur Gudmundsdottir (University of Iceland)H-Index: 22
Last.Erlingur Johannsson (University of Iceland)H-Index: 18
view all 7 authors...
#1Robert J. Brychta (NIH: National Institutes of Health)H-Index: 26
#2Vaka Rögnvaldsdóttir (University of Iceland)H-Index: 2
Last.Erlingur Johannsson (University of Iceland)H-Index: 18
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The Icelandic Centre for Research (RANNIS) funded this study, along with the Ministry of Education, Science and Culture, and The Icelandic Primary Health Care Research Fund. The authors have no conflicts of interest.
#1Soffia M. Hrafnkelsdóttir (University of Iceland)H-Index: 2
#2Robert J. Brychta (NIH: National Institutes of Health)H-Index: 26
Last.Sigurbjörn Á. Arngrímsson (University of Iceland)H-Index: 18
view all 8 authors...
Objective Few studies have explored the potential interrelated associations of screen time and physical activity with mental health in youth, particularly using objective methods. We examined cross-sectional associations of these variables among Icelandic adolescents, using objective and subjective measurements of physical activity. Methods Data were collected in the spring of 2015 from 315 tenth grade students (mean age 15.8 years) in six elementary schools in metropolitan Reykjavik, Iceland. P...
2 CitationsSource
#1Elvar Smari Sævarsson (University of Iceland)H-Index: 2
#2Erla SvansdottirHrobjartur (University of Iceland)H-Index: 4
Last.Erlingur Johannsson (University of Iceland)H-Index: 18
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Aims: The aims of this study were to study the correlation between lifestyle-related factors, such as organized leisure-time sport participation (OLSP), cardiorespiratory fitness, and adiposity, and academic achievement among preadolescents. Methods: A cross-sectional study involving 248 nine-year-old school children was carried out. OLSP was self-reported with parental assistance, categorized as ≤ 1× a week, 2–3× a week, and ≥ 4× times a week or more. Academic achievement was estimated with res...
2 CitationsSource
#1Nanna Yr Arnardottir (University of Akureyri)H-Index: 5
#2Nina Dora Oskarsdottir (University of Iceland)H-Index: 1
Last.Thorarinn Sveinsson (University of Iceland)H-Index: 9
view all 14 authors...
In Iceland, there is a large variation in daylight between summer and winter. The aim of the study was to identify how this large variation influences physical activity (PA) and sedentary behavior (SB). Free living PA was measured by a waist-worn accelerometer for one week during waking hours in 138 community-dwelling older adults (61.1% women, 80.3 ± 4.9 years) during summer and winter months. In general, SB occupied about 75% of the registered wear-time and was highly correlated with age (β = ...
5 CitationsSource
Last.Emil L. SigurðssonH-Index: 1
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1 CitationsSource
AbstractObjective: The prevalence of Helicobacter pylori (HP) infection is decreasing in the western world. The seroprevalence among 25–50-year-old Icelandic adults was recently shown to be 30–40%....
3 CitationsSource