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Jakob Löndahl

Jakob Löndahl

Associate Professor / Senior Lecturer

Jakob Löndahl

Physical activity changes the deposited fractions of particles in the respiratory tract of adults and children


  • Julia Dobric
  • Christina Isaxon
  • Emilie Stroh
  • Per Wollmer
  • Bo Olsson
  • Jakob Löndahl
  • Jenny Rissler

Summary, in English

Exposure to ambient air pollution can cause a number
of health problems and may be particularly dangerous to susceptible population groups such as children. Health effects caused by air pollution are critically
dependent on both the deposited fraction (DF) of the inhaled particles and in what region of the respiratory tract the deposition takes place. With increasing physical activity, the breathing pattern is altered and the airflow in the respiratory tract increase, this affects the DF and deposition site. In this study we investigated changes in DF at increasing physical activity for three population groups: ~5 and 10 year-old children, and adults.

Our results indicate that the variation in total DF with physical activity is minor, but that the DF for the UFPs increase in the AI region at higher activity levels. This is important since the removal of particles in the AI region is not effective and UFPs are believed to pose a specific health risk. Therefore, activity patterns and DF of different population groups need to be considered when estimating particle dose and evaluating health risks.


  • Ergonomics and Aerosol Technology
  • NanoLund: Center for Nanoscience
  • LTH Profile Area: Aerosols
  • Metalund
  • Division of Occupational and Environmental Medicine, Lund University
  • Planetary Health
  • EpiHealth: Epidemiology for Health
  • Clinical Physiology, Malmö
  • Vattenhallen Science Center

Publishing year






Document type

Conference paper: abstract


  • Public Health, Global Health, Social Medicine and Epidemiology


  • Physical activity
  • Regional particle deposition
  • Respiratory tract
  • Children

Conference name

International Aerosol Conference 2022

Conference date

2022-09-04 - 2022-09-09

Conference place

Aten, Greece




  • Stadsluftens hälsobelastning på barn

Research group

  • Planetary Health
  • Clinical Physiology, Malmö