Design
This study employed a qualitative design with semi-structured in-depth interviews to explore how patients with obesity experience activity monitors while attending an intermittent weight loss program.
Setting
The weight-loss programme
Patients with body mass index (BMI) > 40 kg/m2 (or a BMI > 35 kg/m2 with weight related comorbidities) were referred by the Obesity Clinic at St. Olavs Hospital, Trondheim, Norway, to an intermittent weight-loss programme at LHL-klinikkene Røros (LHL-R).
The weight-loss programme took place over a period of two years (October 2016-October 2018) and patients had four intermittent stays (approximately every 5-6 month) at LHL-R, with each stay lasting three weeks. A multidisciplinary team consisting of a physician, dietician, physiotherapist, occupational therapist, nurse and psychiatric nurse trained in behavioural cognitive therapy (BCT) were responsible for the programme. The programme was based on current guidelines for the management of overweight and obesity in adults [16].
The weight-loss programme included physical activity, dietary sessions and BCT, from Monday to Friday every week during each stay. The physical activity part included two hours of theory in plenary and 31 hours of practical sessions. The physical activity programme offered various activities, focusing on being physically active through endurance and strength exercise. Dietary advice was offered in a one-hour lecture and four hours of group work, focusing on calories and nutrition, two hours of examining the ingredients and nutrition of groceries, and four hours of cooking. Dietary sessions focused on planning and preparing meals, as well as awareness of, and ways to modify, eating behaviour. Personalized meal plans and dietary advice targeted a calorie reduction of approximately 600 Kilocalories a day. Individual calorie restricted diets were based on the given estimate for resting metabolic rate. BCT included three hours of plenary sessions, four hours group work, and individual sessions. BCT was aimed at goal setting and increased awareness of maladaptive cognitions that contribute to the maintenance of emotional distress and problematic eating behaviour [17]. Topics covered were expectations towards attending the weight-loss programme, motivation and conflicting interests, excuses, compensatory strategies and foundation for change.
In addition, each participant’s body composition was assessed using a bioelectrical impedance scale. Cardiovascular and metabolic risks were assessed using blood chemistry analysis, and physiology assessed using cardiorespiratory fitness test and blood pressure measurement. The team discussed test results with each participant individually.
The activity monitors
Three different activity monitors were used in this study. The FitBit ZipTM is a clip-on step counter that records and displays distance and estimates total energy consumption. The Mio FuseTM and the Mio SliceTM are wristbands with integrated optical heart rate sensors, recording and displaying heart rate, calorie consumption and sleep hours. The Mio devices held a population-based algorithm calculating heart rate variability into Personal Activity Intelligence points (PAI)[18].
All three activity monitors display "time to move" reminders. When reaching the recommended 10.000 daily steps or 100 weekly PAI, the activity monitors displayed smiley faces and apps changed colour.
Activity monitors and respective mobile software applications were set-up for all patients, device pairing completed, and troubleshooting handled with help from personnel. They were free to stop using the activity monitors whenever they wanted.
Recruitment
All 56 patients who entered their first stay at LHL-R were introduced to one of the three different activity monitors (Fitbit ZipTM, Mio FuseTM, or Mio SliceTM). During the patients’ second stay at LHL-R, a random sample was recruited for this study. The team at LHL-R helped with the recruitment process. They informed the patients that participation in the study would not affect their participation in the weight-loss programme. Recruitment continued until saturation was met. Of the 56 patients, 31 agreed to an interview, and two declined, resulting in 29 informants for this study.
Interviews
Interviews were conducted between February and July 2017 at patients’ second stay at LHL-R. The third author (CH) performed the interviews, which had a mean duration time of 45 minutes. An audio recorder was used and field notes were made during each interview.
A semi-structured interview guide was employed, the main question being "What are your thoughts about how the activity monitor affects your weight-loss?" Follow-up questions and probes were used to clarify and explore what they considered to be important, such as: "How do you experience the activity monitor?" “What did you like or dislike about the activity monitor?"
Ethics
The study was approved by the Regional Committee for Medical and Health research in central Norway (REK 2016/833). All informants received oral and written information about the study. They signed an informed consent form prior to the interview.
Data analysis
All interviews were transcribed verbatim and analyzed together with the field notes. The data was analysed thematically in six steps [19]. In the first step of the analysis, transcripts and field notes were read to obtain an overall impression of the material. A summary of transcripts and a list of preliminary themes that occurred was written. Second, all meaning units were extracted and sorted into codes. In the search for themes were all codes relevant to the aim discussed by all authors in the third step. The co-authors read three interviews each and the summary prior to the discussion. In the fourth step, the themes were reviewed, checking that each theme worked in relation to the codes and related data. Some themes were discarded, and some codes were revised returning to steps two and three. In the fifth step, all authors defined and named the themes after exploring: "what did this theme tell us?" and "how did each story fit the overall story of the data?" Naming the themes finalized this step. In the sixth and final step the results were written, including quotes that highlight informants’ stories. The authors met repeatedly between October 2017 and March 2018, discussing themes and possible underlying patterns in the data.
All quotes were translated from Norwegian into English.