Tom Stewart

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Research Fellow

Phone: +64 9 921 999 ext. 7855

Email: tom.stewart@aut.ac.nz

PhysicalAddress:
Human Potential Centre
AUT Millennium
Room SA225

LinksWebpages:
@DrTomStewart

Qualifications

PhD – Public Health Epidemiology (AUT University) – 2017

Teaching Areas

  • Physical activity and health promotion
  • Quantitative research methods

Research Areas

  • Built environment and physical activity
  • Physical activity measurement and machine learning
  • Sedentary behaviour

Research Summary

Dr Stewart is a Vice Chancellors Scholar and Research Fellow at the Human Potential Centre, located at AUT Millennium. His research is broadly based in public health, with a focus on physical activity epidemiology, understanding the environmental determinants of health, and finding preventative solutions for reducing the prevalence of obesity and other chronic diseases. His recent interests in the data science space include combining big data and machine learning to tackle a range of public health research challenges.

Supervision

  • Disentangling the combined effects of 24-hour movement behaviours on childhood health outcomes: A compositional data approach. (PhD)
  • Can a low-cost IMU in combination with machine learning accurately measure fast-bowling workload in cricket? (PhD)
  • Validation of AX3 accelerometers in accurately detecting postures and movement patterns in a free-living environment. (Masters Thesis)

Publications

Research Gate Profile

Google Scholar Profile

Peer reviewed journal papers

  • Stewart, T., Narayanan, A., Hedayatrad, L., Neville, J., Mackay, L., Duncan, S. (2018). A dual-accelerometer system for classifying physical activity in children and adults. Medicine & Science in Sports & Exercise.
  • Duncan, S., Stewart, T., Mackay, L., Neville, J., Narayanan, A., Walker, C., . . . Morton, S. (2018). Wear-Time Compliance with a Dual-Accelerometer System for Capturing 24-h Behavioural Profiles in Children and Adults. International Journal of Environmental Research and Public Health, 15(7), 1296.
  • Ikeda, E., Stewart, T., Garrett, N., Egli, V., Mandic, S., Hosking, J., . . . Smith, M. (2018). Built environment associates of active school travel in New Zealand children and youth: A systematic meta-analysis using individual participant data. Journal of Transport & Health, 9, 117-131.
  • Duncan, S., Stewart, T., Schneller, B. M., Godbole, S., Cain, K., Kerr, J. (2018). Convergent validity of ActiGraph and Actical accelerometers for estimating physical activity in adults. PLOS ONE.
  • Hjort, M., Martin, M. W., Stewart, T., Troelsen, J. (2018). Design of Urban Public Spaces: Intent vs. Reality. International Journal of Environmental Research and Public Health, 15(4), 816
  • Bhosale, J., Duncan, S., Stewart, T., Chaix, B., Kestens, Y., Schofield, S. (2017). Measuring children’s independent mobility: Comparing interactive mapping with destination access and license to roam. Children’s Geographies, 15(6), 679-689.
  • Stewart, T., Duncan, S., Schipperijn, J. (2017). Adolescents who engage in active school transport are also more active in other contexts: a space-time investigation. Health and Place, 43, 25-32.
  • Oliver, M., Taylor, S., Iusitini, L., Stewart, T., Savila, F., Tautolo, E., Plank, L., Jalili-Moghaddam, S., Paterson, J., Rush, E. (2017). Accelerometer data treatment for adolescents: Fitting a piece of the puzzle. Preventive Medicine Reports, 5, 228-231.
  • Stewart, T., Schipperijn, J., Snizek, B., Duncan, S. (2017). Adolescent school travel: is online mapping a practical alternative to GPS-assessed travel routes? Journal of Transport and Health, 5, 113-122.
  • Ward, J., Duncan, S., Stewart, T. (2016). Is children’s exposure to greenspace associated with physical activity, cognitive development, emotional wellbeing, and ability to appraise risk? Health and Place, 40, 44-50.
  • Duncan, S., White, K., Mavoa, S., Stewart, T., Hinckson, E. A., Schofield, G. (2016). Active Transport, Physical Activity, and Distance Between Home and School in Children and Adolescents, Journal of Physical Activity and Health, 13(4), 447-453.
  • Aminian, S., Hinckson, E. A., Stewart, T. (2015). Modifying the classroom environment to increase standing and reduce sitting. Building, Research and Information, 1(5), 1-16.
  • Stewart, T., Duncan, S., Chaix, B., Kestens, Y., Schipperijn, J., Schofield, G. (2015). A novel assessment of adolescent mobility: A pilot study. International Journal of Behavioural Nutrition and Physical Activity, 12(1), 18.
  • Hinckson, E. A., Duncan, S., Oliver, M., Mavoa, S., Cerin, E., Badland, H. M., Stewart, T., Ivory, V., McPhee, J., Schofield, G. (2014). Built environment and physical activity in New Zealand adolescents: A protocol for a cross-sectional study. BMJ Open, 4(4).
  • Hinckson, E. A., Aminian, S., Ikeda, E., Stewart, T., Oliver, M., Duncan, S., & Schofield, G. (2013). Acceptability of standing workstations in elementary schools: A pilot study. Preventive Medicine, 56(1), 82-85.
  • Duncan, S., Stewart, T., Oliver, M., Mavoa, S., MacRae, D., Badland, H. M., & Duncan, M. (2013). Portable Global Positioning System Receivers: Static Validity and Environmental Conditions. American Journal of Preventive Medicine, 44(2), e19-e29.

Refereed conference presentations

  • Stewart, T., Hedeyatrad, L., Narayanan, A., Neville, J., Duncan, S. Validity of a dual-accelerometer system for classifying physical activities and sedentary behaviours. Presented at the International Society for Behaviour, Nutrition and Physical Activity, Hong Kong, June 2018.
  • Duncan, S., Stewart, T., Neville, J., Mackay, L., Walker, C., Berry, S., Morton, S. Utility of a novel dual-accelerometer system for capturing 24-hour behavioural profiles in free-living populations. Presented at the International Society for Behaviour, Nutrition and Physical Activity, Hong Kong, June 2018.
  • Stewart, T., Schipperijn, J., Snizek, B., Duncan, S. The automated extraction of multimodal trips from GPS data: an innovative processing approach to improve travel mode and route assessment. Presented at The International Congress on Physical Activity and Public Health (ISPAH), Bangkok, November 2016.
  • Stewart, T., Schipperijn, J., Snizek, B., Duncan, S. Adolescent school travel: is SoftGIS a practical alternative to GPS-assessed travel routes? Presented at The International Congress on Physical Activity and Public Health (ISPAH), Bangkok, November 2016.
  • Schmidt, T., Stewart, T., Duncan, S., Schipperijn, J. Using structural equation modeling to assess objective and perceived built environment interactions of cycling to school. Presented at The International Congress on Physical Activity and Public Health (ISPAH), Bangkok, November 2016.
  • Stewart, T., Duncan, S., Chaix, B., Kestens, Y., Schipperijn, J., Schofield, G. A novel assessment of adolescent mobility: A pilot study. Presented at the International Society for Behaviour, Nutrition and Physical Activity, San Diego, May 2014.
  • Stewart, T., Duncan, S., Baker, N., & Moon, J. Validity of a smartphone for assessing physical activity and location. Presented at the International Society for Behaviour, Nutrition and Physical Activity, San Diego, May 2014.

Book chapters

  • Egli, V., Stewart, T., Ikeda, I., Smith, M. (2018). Interpersonal correlates of active transportation. In Children's Active Transportation (pp. 240). New York, NY: Elsevier.
  • Larouche, R., Stewart, T., Sarmiento, O. (2018). Active transportation – is the school hiding the forest? In Children's Active Transportation (pp. 240). New York, NY: Elsevier.