Dr Xanne Janssen

Strathclyde Chancellor's Fellow

Physical Activity for Health

Personal statement

I started as a Chancellor's Fellow in the Physical Activity for Health group in the School of Psychological Sciences and Health in August 2015. I graduated with a BSc in Biomedical Engineering in 2008, followed by a MSc in Biology of Human Performance and Health in 2009. I completed my PhD at the University of Wollongong, Australia before joining the University of Strathclyde as a research associate in Jan 2014.


Has expertise in:

    • Measurement of physical activity and sedentary behaviour in children and adolescents.
    • Patterns and changes in sedentary behaviour and physical activity across childhood.


Longitudinal changes in moderate-to-vigorous-intensity physical activity in children and adolescents : a systematic review and meta-analysis
Farooq Abdulaziz, Martin Anne, Janssen Xanne, Wilson Matthew G, Gibson Ann-Marie, Hughes Adrienne, Reilly John J
Obesity Reviews Vol 21 (2020)
Jump Start childcare-based intervention to promote physical activity in pre-schoolers : six-month findings from a cluster randomised trial
Okely Anthony D, Stanley Rebecca M, Jones Rachel A, Cliff Dylan P, Trost Stewart G, Berthelsen Donna, Salmon Jo, Batterham Marijka, Eckermann Simon, Reilly John J, Brown Ngiare, Mickle Karen J, Howard Steven J, Hinkley Trina, Janssen Xanne, Chandler Paul, Cross Penny, Gowers Fay
International Journal of Behavioral Nutrition and Physical Activity Vol 17 (2020)
GRADE-ADOLOPMENT process to develop 24-hour movement behavior recommendations and physical activity guidelines for the under 5s in the United Kingdom, 2019
Reilly John J, Hughes Adrienne R, Janssen Xanne, Hesketh Kathryn R, Livingstone Sonia, Hill Catherine, Kipping Ruth, Draper Catherine E, Okely Anthony D, Martin Anne
Journal of Physical Activity and Health Vol 17, pp. 101-108 (2020)
Should we scale-up? A mixed methods process evaluation of an intervention targeting sedentary office workers using the RE-AIM QuEST framework
MacDonald Bradley, Gibson Ann-Marie, Janssen Xanne, Hutchinson Jasmin, Headley Samuel, Matthews Tracy, Kirk Alison
International Journal of Environmental Research and Public Health Vol 17 (2019)
Associations of screen time, sedentary time and physical activity with sleep in under 5s : a systematic review and meta-analysis
Janssen Xanne, Martin Anne, Hughes Adrienne R, Hill Catherine M, Kotronoulas Grigorios, Hesketh Kathryn R
Sleep Medicine Reviews Vol 49 (2019)
An integrative, systematic review exploring the research, effectiveness, adoption, implementation and maintenance of interventions to reduce sedentary behaviour in office workers
MacDonald B, Janssen X, Kirk A, Patience M, Gibson A
International Society for Behavioural Nutrition and Physical Activity Annual Meeting, pp. 147 (2019)

more publications

Research interests

My research interests include exploring patterns of sedentary behaviour and physical activity across childhood and adolescence and their influence on health outcomes (e.g. cardiometabolic health) and measurement of physical activity and sedentary behaviour in children and adolescents. My current fellowship program (Sitting in Teens; SITS) aims to increase the evidence base foundation for interventions aiming to decrease time spent sitting and increase breaks in sitting time in teenagers. 

I am also part of the Gateshead Millennium Study research team. GMS is an important longitudinal study, examining changes in sitting time during childhood and adolescence, detrminants of sitting time and the association between changes in sitting time and adiposity.


Development a cross platform, personalised digital intervention to reduce sedentary behaviour and improve physical and mental wellbeing at work.
Kirk, Alison (Principal Investigator) Gibson, Ann-Marie (Co-investigator) Janssen, Xanne (Co-investigator) Cogan, Nicola (Co-investigator)
Scottish Funding Council innovation application (value £59,000) involving a new cross faculty collaboration with University of Strathclyde staff from Psychology, Computer and Information Science and Physical activity for Health groups with an external Edinburgh based company called “Welbot”. Funding was awarded to assist the company to develop and evaluate a cross-platform digital wellness programme that provides tailored notifications (“nudges”) to each user, helping employees stay physically and mentally well in the workplace. The innovation of the programme is the health information which is delivered in nudges which learn and adapt dependant on the users’ actions. This project was short listed for a Scottish Knowledge Exchange Innovation of the Year Award in 2019.
01-Jan-2018 - 28-Jan-2019
Development of a cross platform, personalised digital intervention to reduce sedentary behaviour and improve physical and mental well-being at work
Terzis, Sotirios (Principal Investigator) Kirk, Alison (Principal Investigator) Roper, Marc (Co-investigator) Wallace, William (Co-investigator) Gibson, Ann-Marie (Co-investigator) Cogan, Nicola (Co-investigator) Janssen, Xanne (Co-investigator)
01-Jan-2018 - 31-Jan-2018

more projects


Physical Activity for Health
Graham Hills Building

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