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myst [2019/09/13 09:14]
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 ====== Mind Your Step (MYST) ====== ====== Mind Your Step (MYST) ======
  
-Mind Your Step is one of Lifelines'​ [[additional assessments]]\\  +Mind Your Step is one of [[start|Lifelines]]' [[additional assessments]].\\  
-This study was a collaboration between Lifelines and the Hanze University of Applied sciences, Research group [[https://​www.hanze.nl/​nld/onderzoek/speerpunten/​healthy-ageing/​onderzoek/​lectoraten/​healthy-ageing-onderzoek|Healthy Ageing]]. +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]].\\ 
-The goal of the study was to gain insight in determinants related to the adoption of quantified self-devices ​and potentially behavior change/ change in body weight. The digital weight scale and activity tracker ​were connected to a smartphone application,​ in which the user could see his or her own data. The participants participated in the study for a year. All participants filled out two questionnaires with regard ​to different determinants (like self-regulationand motivation towards ​self-tracking. ​In addition, they were asked to fill out an evaluation questionnaire about the usage and experience with the devices.+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 =====
  
-Participants ​in the age 25-65 were invited to use a digital weight scale and activity tracker. ​They also have been asked to complete several questionnaires.  +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 digital ​weight scale and activity tracker were used between April 2016 and April 2017. In this period the participant also filled ​out 3 questionnaires.+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. ​ There was a restriction on number of participants because there were 100 activity trackers available. ​
  
 +===== Subcohort =====
  
 +700 participants between 25 and 65 years old were invited to be screened for participation.
 +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)
  
-PROTOCOL\\ +===== Variables =====
-PERIOD+
  
-===== Subcohort =====+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.\\ ​
  
-MYST was performed in [...] [[cohort|participants]]. +===== Findings ​===== 
-The selection criteria were the following:​ +  
- +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.\\  
-===== Variables ​=====+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.\\ ​
  
-The following variables were collected:+===== 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.1568358885.txt.gz · Last modified: 2019/11/07 16:07 (external edit)