Miss Sonia Cheng

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Thesis work

Thesis title: An examination of physical activity and sedentary behaviour in chronic obstructive pulmonary disease

Supervisors: Sarah DENNIS , Jennifer ALISON , Zoe MCKEOUGH , Emmanuel STAMATAKIS

Thesis abstract:

Reducing sedentary time and increasing participation in light intensity physical activity (PA) may be a more realistic strategy for reducing cardiometabolic risk in people with chronic obstructive pulmonary disease (COPD) than targeting moderate-vigorous intensity PA alone. Such an approach may also increase the confidence and willingness of people with COPD to engage in more intense PA, and may serve as an intermediate goal to increase uptake of pulmonary rehabilitation.

The first paper of this thesis examined the associations between total and type-specific PA with mortality risk in COPD. Our population-based cohort study found that participants who adhered to current PA recommendations had a lower risk of all-cause and cardiovascular disease mortality, but levels of physical activity below this threshold may still confer some mortality benefit. Walking and sport/exercise, but not domestic physical activity, demonstrated dose-response associations with mortality risk in COPD.

The second paper of this thesis aims to investigate the effectiveness and feasibility of a six-week behaviour change intervention to reduce sedentary time in COPD, using a randomised parallel-group design. The primary outcome measures are total sedentary time, usual bout duration (a measure of the pattern of sedentary time accumulation), and feasibility of the intervention as assessed by uptake and retention of participants, participant compliance, and adverse events. At present, 40 out of 70 participants have been enrolled into the study.

The third paper of this thesis describes the characteristics of physical activity and sedentary behaviour of Australian adults with COPD using the activPAL3 micro. The activPAL is considered to be the gold standard for objectively measuring sedentary time, as the device contains an inclinometer that can distinguish between sitting and standing positions. Baseline physical activity and sedentary behaviour data will be collected from the 70 participants enrolled in the randomised controlled trial (above). This paper also aims to validate the Sedentary Behaviour Questionnaire, a self-report measure of sedentary behaviour, in the COPD population.

The fourth paper of this thesis will qualitatively explore participant satisfaction and acceptability of the behaviour change intervention. Semi-structured interviews will be conducted with a sample of participants in the intervention group to examine attitudes towards the different components of the behaviour change intervention, and barriers to reducing sedentary behaviour. The 'Capability, Opportunity, Motivation and Behaviour' (COM-B) model of behaviour change will be used as a theoretical framework to analyse the interview transcripts. Data will be collected until saturation is reached.

Selected grants

2017

  • The effectiveness and feasibility of a behaviour-change intervention to reduce sedentary time in people with Chronic Obstructive Pulmonary Disease (COPD): A pilot randomised controlled trial.; McKeough Z, Cheng S, Alison J, Stamatakis E, Dennis S; Physiotherapy Research Foundation/Seeding Grant.

Selected publications

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Journals

  • Mijatovic, J., Capling, A., Cheng, S., Stamatakis, E., Louie, J., Cheung, N., Markovic, T., Ross, G., Senior, A., Brand-Miller, J., Flood, V. (2018). Associations of diet and physical activity with risk for gestational diabetes mellitus: A Systematic review and meta-analysis. Nutrients, 10(6). [More Information]
  • Cheng, S., McKeough, Z., Alison, J., Dennis, S., Hamer, M., Stamatakis, E. (2018). Associations of total and type-specific physical activity with mortality in chronic obstructive pulmonary disease: a population-based cohort study. BMC Public Health, 18(1). [More Information]
  • McKeough, Z., Cheng, S., Alison, J., Jenkins, C., Hamer, M., Stamatakis, E. (2018). Low leisure-based sitting time and being physically active were associated with reduced odds of death and diabetes in people with chronic obstructive pulmonary disease: a cohort study. Journal of Physiotherapy, 64(2), 114-120. [More Information]
  • Alison, J., Cheng, S., McKeough, Z. (2018). Pulmonary rehabilitation using minimal equipment for people with chronic obstructive pulmonary disease (COPD). Cochrane Database of Systematic Reviews, 2017 (12). [More Information]
  • Cheng, S., Alison, J., Dennis, S., Stamatakis, E., Spencer, L., McNamara, R., Sims, S., McKeough, Z. (2017). A behaviour change intervention to reduce sedentary time in people with chronic obstructive pulmonary disease: Protocol for a randomised controlled trial. Journal of Physiotherapy, 63(3), 182-182. [More Information]

2018

  • Mijatovic, J., Capling, A., Cheng, S., Stamatakis, E., Louie, J., Cheung, N., Markovic, T., Ross, G., Senior, A., Brand-Miller, J., Flood, V. (2018). Associations of diet and physical activity with risk for gestational diabetes mellitus: A Systematic review and meta-analysis. Nutrients, 10(6). [More Information]
  • Cheng, S., McKeough, Z., Alison, J., Dennis, S., Hamer, M., Stamatakis, E. (2018). Associations of total and type-specific physical activity with mortality in chronic obstructive pulmonary disease: a population-based cohort study. BMC Public Health, 18(1). [More Information]
  • McKeough, Z., Cheng, S., Alison, J., Jenkins, C., Hamer, M., Stamatakis, E. (2018). Low leisure-based sitting time and being physically active were associated with reduced odds of death and diabetes in people with chronic obstructive pulmonary disease: a cohort study. Journal of Physiotherapy, 64(2), 114-120. [More Information]
  • Alison, J., Cheng, S., McKeough, Z. (2018). Pulmonary rehabilitation using minimal equipment for people with chronic obstructive pulmonary disease (COPD). Cochrane Database of Systematic Reviews, 2017 (12). [More Information]

2017

  • Cheng, S., Alison, J., Dennis, S., Stamatakis, E., Spencer, L., McNamara, R., Sims, S., McKeough, Z. (2017). A behaviour change intervention to reduce sedentary time in people with chronic obstructive pulmonary disease: Protocol for a randomised controlled trial. Journal of Physiotherapy, 63(3), 182-182. [More Information]

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