Bilde av Johansson, Jonas
Bilde av Johansson, Jonas
Senior Researcher Department of Community Medicine jonas.johansson@uit.no +4777644876 Tromsø You can find me here

Jonas Johansson


Job description

Senior Researcher employed at the Department of Community Medicine, UiT. Main research focus is using epidemiological research data from the Tromsø Study to study ageing processes, muscle strength, physical function, musculoskeletal conditions (sarcopenia, osteoporosis, fractures), and the influence of physical activity. Have led the scientific committee for the ongoing Tromsø8 data collection wave taking place between 2025-2026. Also works with the RCN-funded RESTART project, a randomized controlled trial which investigates how a complex lifestyle intervention can improve and maintain the health status of older adults 60+. Have a background in exercise physiology and completed a PhD in Public Health in 2018.

Member of the Epidemiology of chronic diseases research group and associate member of the research groups Sport, physical activity, and health and Health informatics and technology


  • Tord Markussen Hammer, Jonas Johansson, Nina Emaus, Anne-Sofie Furberg, Luis Gracia-Marco, Bente Morseth et al.:
    Changes in accelerometer-measured physical activity and self-reported leisure time physical activity from adolescence to young adulthood: a longitudinal cohort study from the Fit Futures Study
    International Journal of Behavioral Nutrition and Physical Activity 15. July 2025 DOI
  • Duarte Barros, Jonas Johansson, Tom Wilsgaard, José Magalhães, Joana Carvalho, Elisa Marques :
    One-year concurrent training improves physical performance and handgrip strength in nursing home residents
    GeroScience 2025 DOI
  • Jonas Johansson, Trygve Sigvart Deraas, Laila Arnesdatter Hopstock, André Henriksen, Sameline Grimsgaard :
    Improving and preserving cardiorespiratory fitness, muscle strength and adiposity through a complex lifestyle intervention in community-dwelling older adults with elevated cardiometabolic risk: study protocol for the RESTART randomised controlled trial
    BMJ Open 2025 DOI / ARKIV
  • Rebecca Anne Hetland, Tom Wilsgaard, Laila Arnesdatter Hopstock, Inger Ariansen, Jonas Lars Johansson, Bjarne K. Jacobsen et al.:
    Social inequality in prevalence of NCD risk factors: a cross-sectional analysis from the population-based Tromsø Study 2015-2016
    BMJ Open 2024 DOI / ARKIV
  • Saija Mikkilä, Bjørn Helge Handegård, Jonas Lars Johansson, Laila Arnesdatter Hopstock, Roland Johannes Wilhelmus van den Tillaar, Nina Alice Emaus et al.:
    Cross-sectional associations between accelerometer-measured physical activity and hip bone mineral density: the Tromsø Study 2015-2016
    JBMR Plus 2024 DOI / ARKIV
  • Edvard Hamnvik Sagelv, Nina Alice Emaus, Elin Kristin Evensen, Tore Christoffersen, Elaine Dennison, Anne-Sofie Furberg et al.:
    Acquisition of peak bone mass in a Norwegian youth cohort : longitudinal findings from the Fit Futures study 2010–2022
    Archives of Osteoporosis 2024 DOI / ARKIV / FULLTEKST
  • Ingebjørg Tronstad, Mari Hoff, Julie Horn, Sigrid Anna Aalberg Vikjord, Vibeke Videm, Jonas Lars Johansson et al.:
    Rheumatoid arthritis, disease-modifying antirheumatic drugs and risk of major osteoporotic fracture: prospective data from the HUNT Study, Norway
    RMD Open 2024 DOI / ARKIV
  • Erlend Johannessen, Jonas Johansson, Gunnar Hartvigsen, Alexander Horsch, Eirik Årsand, André Henriksen :
    Collecting health-related research data using consumer-based wireless smart scales
    International Journal of Medical Informatics 2023 DOI / ARKIV
  • Shreeshti Uchai, Lene Frost Andersen, Jonas Johansson, Laila Arnesdatter Hopstock, Anette Hjartåker :
    Dual-Energy X-Ray Absorptiometry Derived Adiposity Measures and Pre-Frailty/Frailty among Norwegian Adults: The Tromsø Study 2007–2015
    The Journal of Nutrition, Health & Aging 2023 DOI / ARKIV
  • Edvard Hamnvik Sagelv, Laila Arnesdatter Hopstock, Bente Morseth, Bjørge Hermann Hansen, Jostein Steene-Johannessen, Jonas Lars Johansson et al.:
    Device-measured physical activity, sedentary time, and risk of all-cause mortality: an individual participant data analysis of four prospective cohort studies
    British Journal of Sports Medicine 2023 DOI / ARKIV
  • Erlend Johannessen, André Henriksen, Eirik Årsand, Alexander Horsch, Jonas Johansson, Gunnar Hartvigsen :
    Health Research Requires Efficient Platforms for Data Collection from Personal Devices
    Studies in Health Technology and Informatics 2023 DOI / ARKIV
  • Jonas Lars Johansson, Anne Sameline Grimsgaard, Bjørn Heine Strand, Avan Aihie Sayer, Rachel Cooper :
    Comparing associations of handgrip strength and chair stand performance with all-cause mortality—implications for defining probable sarcopenia: the Tromsø Study 2015–2020
    BMC Medicine 2023 DOI / ARKIV
  • Jonas Johansson, Nina Emaus, Bastiaan Geelhoed, Edvard Hamnvik Sagelv, Bente Morseth :
    Vertebral Fractures Assessed by Dual-Energy X-Ray Absorptiometry and All-Cause Mortality: The Tromsø Study, 2007-2020
    American Journal of Epidemiology 2022 DOI / ARKIV
  • Erlend Johannessen, André Henriksen, Gunnar Hartvigsen, Alexander Horsch, Eirik Årsand, Jonas Johansson :
    Ubiquitous digital health-related data: clarification of concepts
    2022 DOI / ARKIV
  • Saija Mikkilä, Jonas Johansson, Anna Hava Nordström, Peter Nordström, Nina Emaus, Bjørn Helge Handegård et al.:
    A 15-year follow-up study of hip bone mineral density and associations with leisure time physical activity. The Tromsø Study 2001-2016
    PLOS ONE 2022 DOI / ARKIV
  • Marie Wasmuth Lundblad, Jonas Johansson, Bjarne Koster Jacobsen, Sameline Grimsgaard, Lene Frost Andersen, Tom Wilsgaard et al.:
    Secular and longitudinal trends in body composition: The Tromsø Study, 2001 to 2016
    Obesity 2021 DOI / ARKIV
  • Marie Wasmuth Lundblad, Bjarne Koster Jacobsen, Jonas Johansson, Emanuella de Lucia Rolfe, Sameline Grimsgaard, Laila Arnesdatter Hopstock :
    Reference Values for DXA-Derived Visceral Adipose Tissue in Adults 40 Years and Older from a European Population: The Tromsø Study 2015–2016
    Journal of Obesity 2021 DOI / ARKIV
  • Rachel Cooper, Vladimir M. Shkolnikov, Alexander Kudryavtsev, Sofia Malyutina, Andrew Ryabikov, Laila Arnesdatter Hopstock et al.:
    Between-study differences in grip strength: a comparison of Norwegian and Russian adults aged 40–69 years
    Journal of Cachexia, Sarcopenia and Muscle 2021 DOI / ARKIV
  • Niklas Sörlén, Andreas Hult, Peter Nordström, Anna Hava Nordström, Jonas Johansson :
    Short-term balance training and acute effects on postural sway in balance-deficient older adults: a randomized controlled trial
    BMC sports science, medicine and rehabilitation 2021 DOI / ARKIV
  • Jonas Johansson, Bente Morseth, David Scott, Bjørn Heine Strand, Laila Arnesdatter Hopstock, Sameline Grimsgaard :
    Moderate-to-vigorous physical activity modifies the relationship between sedentary time and sarcopenia: the Tromsø Study 2015–2016
    Journal of Cachexia, Sarcopenia and Muscle 01. June 2021 DOI / ARKIV
  • Trygve Sigvart Deraas, Laila Arnesdatter Hopstock, André Henriksen, Bente Morseth, Anne-Sofie Sand, Inger Njølstad et al.:
    Complex lifestyle intervention among inactive older adults with elevated cardiovascular disease risk and obesity: a mixed-method, single-arm feasibility study for RESTART—a randomized controlled trial
    Pilot and Feasibility Studies 2021 DOI / ARKIV
  • Marie Wasmuth Lundblad, Bjarne Koster Jacobsen, Jonas Johansson, Sameline Grimsgaard, Lene Frost Andersen, Laila Arnesdatter Hopstock :
    Anthropometric measures are satisfactory substitutes for the DXA‐derived visceral adipose tissue in the association with cardiometabolic risk—The Tromsø Study 2015–2016
    Obesity Science & Practice 2021 DOI / ARKIV
  • Jonas Johansson, Bjørn Heine Strand, Bente Morseth, Laila Arnesdatter Hopstock, Sameline Grimsgaard :
    Differences in sarcopenia prevalence between upper-body and lower-body based EWGSOP2 muscle strength criteria: the Tromsø study 2015–2016
    BMC Geriatrics 2020 DOI / ARKIV
  • Anna Hava Nordström, Jonathan Bergman, Sabine Björk, Bo Carlberg, Jonas Johansson, Andreas Hult et al.:
    A multiple risk factor program is associated with decreased risk of cardiovascular disease in 70-year-olds: A cohort study from Sweden
    PLoS Medicine 2020 DOI / ARKIV
  • André Henriksen, Jonas Johansson, Gunnar Hartvigsen, Sameline Grimsgaard, Laila Arnesdatter Hopstock :
    Measuring Physical Activity Using Triaxial Wrist Worn Polar Activity Trackers: A Systematic Review
    International Journal of Exercise Science 2020 ARKIV / FULLTEKST
  • David Scott, Jonas Johansson, Anoohya Gandham, Peter R Ebeling, Peter Nordström, Anna Hava Nordström :
    Associations of accelerometer-determined physical activity and sedentary behavior with sarcopenia and incident falls over 12 months in community-dwelling Swedish older adults
    Journal of Sport and Health Science 2020 DOI / ARKIV
  • David Scott, Jonas Johansson, Peter R. Ebeling, Peter Nordström, Anna Hava Nordström :
    Adiposity Without Obesity: Associations with Osteoporosis, Sarcopenia, and Falls in the Healthy Ageing Initiative Cohort Study
    Obesity 2020 DOI / ARKIV
  • Edvard Hamnvik Sagelv, Laila Arnesdatter Hopstock, Jonas Johansson, Bjørge Hermann Hansen, Brage Søren, Alexander Horsch et al.:
    Criterion validity of two physical activity and one sedentary time questionnaire against accelerometry in a large cohort of adults and older adults
    BMJ Open sport & exercise medicine 2020 DOI / ARKIV
  • Edvard Hamnvik Sagelv, Ulf Ekelund, Sigurd Pedersen, Søren Brage, Bjørge Hermann Hansen, Jonas Johansson et al.:
    Physical activity levels in adults and elderly from triaxial and uniaxial accelerometry. The Tromsø Study
    PLOS ONE 03. December 2019 DOI / ARKIV
  • Anette Bangstad Dalhøi, Jonas Johansson :
    Legen ga henne et valg. Nå sjokkerer 70-åringen ungguttene på treningssenteret.
    15. September 2025 DOI
  • Ole Magnus Rapp, Jonas Johansson :
    Skanner hoftene til tromsøværinger
    31. May 2025
  • Tord Markussen Hammer, Nina Alice Emaus, Elin Kristin Evensen, Jonas Lars Johansson, Bente Morseth, Tore Christoffersen :
    Associations between accelerometer-measured physical activity and bone mineral density from adolescence to young adulthood. Fit Futures.
    2024
  • Shreeshti Uchai, Lene Frost Andersen, Jonas Lars Johansson, Laila Arnesdatter Hopstock, Anette Hjartåker :
    Dual-Energy X-Ray Absorptiometry Derived Adiposity Measures and Pre-Frailty/Frailty among Norwegian Adults: The Tromsø Study 2007–2015
    2023
  • Shreeshti Uchai, Lene Frost Andersen, Jonas Lars Johansson, Laila Arnesdatter Hopstock, Anette Hjartåker :
    Dual-Energy X-Ray Absorptiometry Derived Adiposity Measures and Pre-Frailty/Frailty among Norwegian Adults: The Tromsø Study 2007–2015
    2023
  • Erlend Jan Johannessen, André Henriksen, Eirik Årsand, Ludwig Alexander Horsch, Jonas Lars Johansson, Gunnar Hartvigsen :
    Health Research Requires Efficient Platforms for Data Collection from Personal Devices
    2023
  • Jonas Lars Johansson, Anne Sameline Grimsgaard :
    RESTART vil styrke helsen blant eldre voksne med høy sykdomsrisiko
    2023
  • Jonas Johansson, Erik Krogseth Heimdal :
    Ingeborg Thue (89) satt i en stol nesten hele dagen. Metoden som endret livet hennes, hylles av eksperter.
    23. July 2023 DOI
  • Anne Sameline Grimsgaard, Trygve Sigvart Deraas, Laila Arnesdatter Hopstock, André Henriksen, Jonas Lars Johansson :
    RESTART skal styrke helsen til eldre voksne med høy sykdomsrisiko
    2023
  • Anne Sameline Grimsgaard, Jonas Lars Johansson :
    Vi rigger oss for nytt «tokt»:​ Tromsøundersøkelsen planlegger sin 8. datainnsamling i​ 2025. ​
    2023
  • Erlend Johannessen, André Henriksen, Gunnar Hartvigsen, Alexander Horsch, Eirik Årsand, Jonas Johansson :
    Ubiquitous digital health-related data: clarification of concepts
    2022
  • Marie Wasmuth Lundblad, Laila Arnesdatter Hopstock, Jonas Johansson :
    Kan du måle hvor sunn du er?
    UiT Forskerhjørnet 2022
  • Jonas Johansson, Sameline Grimsgaard, Silje Dyregrov :
    Fire myter om trening og eldre
    16. September 2022 DOI
  • Edvard Hamnvik Sagelv, Laila Arnesdatter Hopstock, Bente Morseth, Bjørge Hermann Hansen, Jostein Steene-Johannessen, Sigmund Alfred Anderssen et al.:
    Physical activity and mortality: Effect modification by sedentary time. An individual participant data analysis of four cohorts with accelerometry measured physical activity
    2022
  • Jonas Johansson :
    Prevalence of sarcopenia and association with objectively measured physical activity: The Tromsø Study
    2021
  • Jonas Johansson :
    Idrettsforskning podcast : Eldre og styrketrening - episode 48
    11. October 2021
  • Jonas Johansson, Bente Morseth, David Scott, Bjørn Heine Strand, Laila Arnesdatter Hopstock, Sameline Grimsgaard :
    Moderate-to-vigorous physical activity modifies the relationship between sedentary time and sarcopenia: The Tromsø Study 2015-2016
    2021
  • Jonas Johansson, Nina Emaus, Bastiaan Geelhoed, Edvard Hamnvik Sagelv, Bente Morseth :
    Associations between vertebral fracture and mortality. The Tromsø Study 2007-2020
    2021
  • Jonas Johansson, Bjørn Heine Strand, Bente Morseth, Laila Arnesdatter Hopstock, Sameline Grimsgaard :
    Prevalence of sarcopenia in a Northern Scandinavian population according to updated EWGSOP2 thresholds for upper-body or lower-body strength: The Tromsø Study
    2020
  • Edvard Hamnvik Sagelv, Ulf Ekelund, Jonas Johansson, Søren Brage, Alexander Horsch, Laila Arnesdatter Hopstock et al.:
    Comparing a short physical activity questionnaire with accelerometer measures as criterion validity: The Tromsø Study
    2019
  • Edvard Hamnvik Sagelv, Ulf Ekelund, Jonas Johansson, Boye Welde, Sameline Grimsgaard, Nina Emaus et al.:
    Measures of adiposity and its association to physical activity: The Tromsø Study
    2019

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    Research interests

    • Sarcopenia and physical functioning
    • Health effects of strength training
    • Physical activity assessment
    • Falls/fractures risk assessment and prediction
    • Osteoporosis and bone metabolism
    • Body composition
    • Healthy ageing

    Teaching

    Supervises Masters' theses at the Master of public health program, Master in clinical nutrition program, and the Master in medicine program. Lecturer commissions at the Bachelor in sports science and Clinical nutrition educational programs. Have since 2012 supervised 13 master students in sports medicine, clinical nutrition, public health, and medicine. 

    PhD supervision: 

    2021-2026: Main supervisor for Elisabeth Dahl Martinsen. Preliminary doctoral thesis title: Mental health trends among older adults and association with lifestyle factors and non-communicable disease

    2025-2028: Main supervisor for Karianne Hagerupsen. Preliminary doctoral thesis title: Monitoring and evaluating physical activity during a complex lifestyle intervention

    2018-2021: Assistant supervisor for Marie W Lundblad. Doctoral thesis title: The obesity epidemic; population levels of visceral adipose tissue and trends in body composition - insights from The Tromsø Study. 

    2021-2025: Assistant supervisor for Erlend Johannesen. Preliminary doctoral thesis title: Collecting health data using wearable sensors and smartphones: towards establishing a digital twin concept

    2021-2025: Assistant supervisor for Ingebjørg Tronstad. Preliminary doctoral thesis title: Rheumatoid arthritis, bone mineral density and fractures - The HUNT and Tromsø Studies 2001-2019

    2021-2025: Assistant supervisor for Rebecca Hetland. Preliminary doctoral thesis title: Socioeconomic gradients in non-communicable disease - biological and lifestyle risk factors: The Tromsø Study

    2023-2027: Assistant supervisor for Tord Hammer. Preliminary doctoral thesis title: The influence of physical activity on bone mass from adolescence to young adulthood: The Fit Futures Study

     




    CV

    Academic background:

    2022 (ongoing) : Senior Researcher, UiT, Norway

    2019-2022: Postdoc, UiT, Norway

    2018-2019: Researcher, UiT, Norway

    2018: PhD in Public Health, UmU, Sweden

    2015-2018: Project coordinator, Region Västerbotten, Sweden

    2012-2018: PhD candidate, UmU, Sweden

    2010-2011: Lecturer in exercise physiology, Sports Medicine Unit, UmU, Sweden

    2010-2011: Research assistant, Sports Medicine Unit, UmU, Sweden

    2010: Master in Sports Medicine, UmU, Sweden

    2008: Bachelor in Sports Science, UmU, Sweden

     

    Academic commissions:

    2021-2025: 4xExternal examiner for Master theses at NTNU and Western Norway University of Applied Sciences, Norway

    2023: 2nd opponent - PhD evaluation and defense (Candidate: Tiril Tøien) at Molde University College, Norway

    2022: 2nd opponent - PhD evaluation and defense (Candidate: Hilde Bårdstu) at NTNU, Norway

    2020: Committee Leader (3rd opponent) - PhD evaluation and defense (Candidate: Marisa Da Silva) at UiT, Norway

    2017: External expert reviewer for quality control and grading of evidence regarding physical activity treatment recommendations in Healthcare – The National Board of Health and Welfare, Sweden


    MH øst L11.115


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