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myst [2019/05/01 16:41]
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 ====== Mind Your Step (MYST) ====== ====== Mind Your Step (MYST) ======
  
-Mind Your Step is the name of an [[start|additional assessment]]\\ +Mind Your Step is one of [[start|Lifelines]]'​ [[additional ​assessments]].\\  
-PROTOCOL\\ +This assessment ​was a collaboration between Lifelines and the [[https://​www.hanze.nl/​eng|Hanze University of Applied sciences]], Research group [[https://​www.hanze.nl/​eng/​research/​strategic-themes/​healthy-ageing|Healthy Ageing]].\\ 
-PERIOD+The first goal of the assessment was to gain insight in determinants related to the adoption of two [[https://​en.wikipedia.org/​wiki/​Quantified_self|quantified self]]-devices:​ a digital weight scale and an activity tracker which could also measure sleeping behavior.\\ 
 +The second goal was to assess to what extent a change in self-regulation capabilities can explain weight loss after 4 and 12 months of self-tracking.\\ 
 + 
 +===== Protocol ===== 
 + 
 +The project took place between April 2016 and April 2017.\\ 
 +Participants (>25 years old) were invited to use a digital weight scale and an activity tracker.  
 +The devices were connected to a smartphone application,​ in which the user could see his or her own data and changes in these data over time.\\ 
 +All of the participants participated in the study for one year. They filled out a digital questionnaire at the beginning of the study, after 4 months, and after 12 months. One questionnaire included possible determinants for adoption and effect of self-tracking devices (like personal variables, self-regulation for health, and motivation towards self-tracking). \\  
 +In addition, participants were asked to fill out an evaluation questionnaire about the usage, effect, and experience with the devices. 
 + 
 +There was a restriction on number of participants because there were 100 activity trackers available. ​
  
 ===== Subcohort ===== ===== Subcohort =====
  
-MYST was performed in [...] [[cohort|participants]]+700 participants ​between 25 and 65 years old were invited to be screened for participation
-The selection criteria ​were the following:+95 participants ​were included in the final study.\\ 
 + 
 +The response rate: 
 +  * 85% (n=80) filled out the baseline questionnaire and installed both devices 
 +  * 77% (n=73) completed T1 questionnaire (after 4 months) 
 +  * 62% (n=46) completed T2 evaluation questionnaire (after 12 months)
  
 ===== Variables ===== ===== Variables =====
  
-The following variables ​were collected:+The questionnaires included questions about intention to start with self-tracking,​ and intention to change weight, sleeping behavior and physical activity behavior. In addition, attitude, self-efficacy and social norm towards self-tracking,​ [[self-regulation]] for health and [[subjective health (general)|perceived health]] ​were measured.\\  
 +Weight and self-weighing frequency were calculated using the weight self-measurements the participants conducted.\\  
 +After 4 and 12 months of self-tracking,​ the participants filled out an evaluation questionnaire in which they could indicate their experiences with the devices, and whether they had changed their physical activity behavior and eating habits.\\  
 + 
 +===== Findings ===== 
 +  
 +Most participants were satisfied with the self-tracking devices, although the usage of the devices declined over time. Usage of the weight scale stabilized after 3 months of self-tracking.\\  
 +The Pulse activity tracker gave some technical problems, like a short battery life, and was therefore replaced until 6 months after the start of the study in at least 30 participants. Thereafter, no replacement was possible due to a restricted availability of the tracker.\\  
 +About 40% of the participants indicated to have changed their eating habits, and 60% indicated to have increased their physical activity behavior.\\  
 +On average, the participants lost 2 kg after 4 months, which was remained after 12 months. An increase in self-regulation capabilities (goal-orientation after 4 months and decision-making after 12 months) explained this weight loss, next to intention to change weight and self-weighing frequency.\\  
 + 
 +===== Publications using MYST data ===== 
 +  * Kooijman, TJM et al. (2020) The role of self-regulation in the effect of self-tracking of physical activity and weight on BMI. Journal of Technology in Behavioral Science (in press).
  
  
myst.1556721703.txt.gz · Last modified: 2019/11/07 16:07 (external edit)