Background Fit City Case Study: Encouraging Physical Activity through the use of
ID: 2923106 • Letter: B
Question
Background
Fit City Case Study: Encouraging Physical Activity through the use of Public Transport: A Self-Monitored Intervention in South Australian Adults
What does your data tell you?
As a health promotion officer for the state government you are working with great enthusiasm on a new health initiative to encourage adult South Australians to take active public transport as a means to improve health. You have performed a critical appraisal of existing research and have decided to focus on initiatives implemented in urban centres and will first recommend targeting increasing the uptake of public transport in Adelaide to support adults (‘Adelaideans’) in engaging in recommended levels of Moderate-to-Vigorous Physical Activity (MVPA). You are also keen to recommend making self-monitoring devices available to the population to encourage physical movement. There is one paper in particular you believe will serve as a good foundation for what you wish to achieve locally:
Voss, C., Sims-Gould, J., Ashe, M., McKay, H., Pugh, C. and Winters, M. (2016). ‘Public transit use and physical activity in community-dwelling older adults: Combining GPS and accelerometry to assess transportation-related physical activity’, Journal of Transport & Health, 3(2), pp.191-199. doi: 10.1016/j.jth.2016.02.11
Physical activity guidelines indicate that 150 minutes of MVPA (moderate-to-vigorous physical activity) is recommended each week. However, WHO guidelines (World Health Organization, 2010) suggest this time may be accumulated in bouts of at least 10 minutes.
You are interested to determine the following from your study participant data:
The percentage of participants that achieved 150 minutes of MVPA, across bouted and non-bouted activity;
If bouts of 10 minutes were achieved via public transport and/or recreationally; and
If weather influences bouted and non-bouted activity, based on time of year.
Instructions:
Based on the numeric tables given, provide the answers written in everyday, non-technical language, for ease of understanding outlining your aims and the outcomes of your analyses.
Comparing Baseline Characteristics of the Canadian and Australian Participants
Write one paragraphs for each part - 6 sentences minimum each. Ensure you include:
• Discuss and interpret, in layman’s terms, the chosen measures of central tendency and dispersion for the different ways in which participants engaged in MVPA for each of your two groups.
• Discuss whether you believe the time of year would have an impact on participants potentially achieving recommended levels of MVPA and if there are any months that may be favoured by participants to indulge in more physical activity.
Explanation / Answer
Answer to question#1 )
For recreation total valid dataset was 192. The average MVPA for them was 495.2, with a middle value of 320.0 . There was nothing as the most common value , since the mode is provided as Zero. The dispersion has been indicated by the standard deviation value of 641
For Public transport the total valid dataset was 302. The average MVPA for them was 490.1 , with a middle value of 300 & the most common value is 420. The value of dispersion is given by standard deviation 654
For Work , the valid dataset is 185 (least of the three). It has a average MVPA of 1224 (highest of all). The middle value is 810 & the most common value is 270. The value of dispersion is 1194 ( highest of the three).
.
Answer to question# 2)
The time of the year seems to have an impact on the MVPA levels , because it can be observed that the months of march and December have the least spread. The spread increases in the months of June , July , August and september. Thus from the boxplot provided one can draw a conclusion that the MVPA levels are influenced to some extent by the time of the year as well
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