Objective Vs. Subjective Physical Activity Assessment in a Clinical Setting of Patients with Obesity and Comorbid Eating Disorders
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 发起方
- 入组人数
- 23
- 试验地点
- 1
- 主要终点
- MET (Metabolic equivalents) - Objective measure of physical activity in MET min/week (by SWA)
研究概览
简要总结
The goal of this observational study is to analyze the validity of self-reported physical activities in obese patients with psychosomatic disorders in a clinical setting. The main question aims to answer:
- How valid are self-reported physical activity data (via the International Physical Activity Questionnaire, IPAQ-SF) compared to actigraphy-based objective measurements (using the SenseWear® armband, SWA)?
Between 2020 and 2022, 23 patients with obesity (21 anorexia nervosa, 2 bulimia nervosa) were recruited from an Austrian psychosomatic clinic. Receiving routine care, participants were additionally asked to
- wear the SWA for seven days in the clinic
- complete the IPAQ-SF for the same reference period on the first weekday after SWA wearing time
The study then statistically compared total physical activity, measured in so called metabolic equivalents (MET minutes per week), and sitting time (minutes per day) between the two methods to determine the accuracy of the self-reported data.
详细描述
This methodological study presents the effort of a collaboration between the Department of Sport and Exercise Science (Paris Lodron University, Salzburg), the Psychosomatic Clinic Eggenburg (Eggenburg, Lower Austria, Austria), and the Paracelsus Medical University (Salzburg, Austria). The empirical work was done by a Master Student as part of a scientific qualification work (M.A. Sports Physiotherapy MSc) and supervised by a member of the research team.
Rationale of the Study:
Accurate measurement of physical activity is essential for addressing obesity, treating eating disorders, and combating the broader obesity epidemic. However, effective treatment requires accurate activity assessments. Traditional self-reported questionnaires often fail to provide this accuracy, particularly in populations where physical or psychological factors impair recall accuracy.
For patients treated for obesity and psychosomatic eating disorders, recall impairments are likely further exacerbated by distorted perceptions of normal physical activity, as well as stress, shame, stigmatization, and guilt.
Moreover, we expect the extent of inaccuracy in self-reported activity duration, frequency or intensity to depend on the actual magnitude of activity.
研究设计
- 研究类型
- Observational
- 观察模型
- Cohort
- 时间视角
- Prospective
入排标准
- 年龄范围
- 18 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •≥ 18 years old
- •body mass index (BMI) ≥ 30
- •could read and speak German
- •had a diagnosis of an eating disorder (ICD-10: F50.9 unspecified eating disorder, F50.2 bulimia nervosa)
- •had a clinical stay of at least 4 weeks
- •wore the SWA for at least 18 h·d-1, (41) including at least 4 days with one weekend day
排除标准
- •inability to walk independently
- •a nickel allergy
- •valid wearing time of accelerometer
结局指标
主要结局
MET (Metabolic equivalents) - Objective measure of physical activity in MET min/week (by SWA)
时间窗: Period: SWA was worn for at least four days within week 3 or week 4 of clinical stay
The lightweight (83 g) SenseWear® Armband Pro 3 (Bodymedia, Inc., Pittsburgh, PA, USA) is a multisensory device that includes a two-axis accelerometer, as well as sensors to measure galvanic skin responses, skin and ambient temperature or heat flux. The monitor was initialized based patient's gender, age, weight and height, and was adjusted to fit on the triceps muscle, halfway between the acromion and olecranon processes of the dominant arm. A proprietary algorithm converts raw data into estimates of total and active energy expenditure, resting metabolic rate, metabolic units, total number of steps, duration of physical activity, duration of sleep and resting time. Data are expressed both in kcal·min-1 and metabolic equivalents (METs). The time of physical activity is categorized into different ranges based on the metabolic equivalent (MET). Values \<3 MET are classified as low, METs between 3 and 6 as moderate values ≥6 MET as vigorous activity.
MET (Metabolic equivalent) - Subjective measure of physical activity in MET min/week (by IPAQ self-report)
时间窗: Single time point: Retrospective self-report on the first weekday after SWA wearing time
The International Physical Activity Questionnaire Short Form (IPAQ-SF) provides a standardized measure of physical activity for individuals across different populations. The most used short form consists of seven items that assess physical activity (frequency, duration) over the past seven days, categorizing it into four types: vigorous intensity, moderate intensity, walking, and sitting. An average metabolic equivalents score (MET, min·w-1) was calculated to assess total physical activity as well as for each type of activity, separately. For walking activities, all types of walking were included and an average MET score was derived. The same procedure was carried out for medium intensity and high intensity activities. By calculating the number of activity days multiplied by the average duration per activity, statements about the energy consumption per week and the fitness level can be derived. The last seven days in which the SWA was worn were used as the reference period.
次要结局
未报告次要终点
研究者
Patrick Kutschar
Ass. Prof. Mag. Dr. Patrick Kutschar
Paracelsus Medical University