Physical Inactivity Clinical Trial
Official title:
SHIFT-Hospital in Motion: Validation Study of a Newly Developed Algorithm for Movement Detection Using Activity Sensors in Acute Care Hospital Patients
The goal of this monocentric observational study involving acute hospitalised patients is to validate the accuracy of classification algorithms for the detection of various movements parameters.
Status | Recruiting |
Enrollment | 110 |
Est. completion date | December 2024 |
Est. primary completion date | October 2024 |
Accepts healthy volunteers | No |
Gender | All |
Age group | 18 Years and older |
Eligibility | Inclusion Criteria: - patient must have been able to walk before hospitalisation (with or without aids) - patient must be cognitively able to follow instructions (if a cognitive assessment has been carried out, this cut-off value counts, if no assessment is available, no cognitive impairment is assumed) - = 18 years - signed informed consent Exclusion Criteria: - patient unable to move prior to hospital admission - prior inclusion in the study - discharge on the same day - inability or contraindications to participate in the study or to follow the study procedures, e.g. due to certain neurological disorders (such as Parkinsonism, hemiplegia, severe Multiple Sclerosis), speech problems, mental disorders, or cognitive impairments - isolated patient (unable to complete the test battery completely) |
Country | Name | City | State |
---|---|---|---|
Switzerland | Universitiy Hospital Basel, Division of Internal Medicine | Basel | Basel-Stadt |
Lead Sponsor | Collaborator |
---|---|
University Hospital, Basel, Switzerland | Zurich University of Applied Sciences |
Switzerland,
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Assessment of the accuracy of the classification algorithm for the detection of movements parameters | During both study phases, patient movement is recorded using two sensors on the non-affected/dominant ankle side. Lower extremities are filmed for precise data annotation.
In phase 1 (model improvement), patients undergo a test battery to improve the accuracy of the algorithm developed in the pilot study for motion and activity detection. The test battery contains a fixed sequence of movements, including lying, sitting, standing, walking and stair climbing. In phase 2 (model validation), a less restrictive test battery is used to validate algorithm accuracy. Patients perform movements like lying, sitting, standing, walking, and stair climbing for up to 15 minutes. Sequence and duration are not predefined. Algorithm accuracy is assessed via a multi-class confusion matrix. Rows show actual classes, columns show predicted classes. The diagonal contains observations where predicted matches actual (true positive). Accuracy [%]= (Sum of diagonal elements/Total observations)*100. |
during hospitalization (up to 1 hour) | |
Secondary | Comparison of the accuracy of the algorithm with and without the use of altimeter data | In this study two different sensors are used. One of these sensors records altimeter data in addition to gyroscope and accelerometer data. The aim of the comparison is to determine if the altimeter data improves the algorithm' accuracy in distinguishing between stair climbing and walking.
The accuracy of the algorithm is calculated using a multi-class confusion matrix. The rows are the actual classes and the columns are the predicted classes. The diagonal of the matrix contains the observations where the predicted class matches the actual class (true positive). Accuracy [in %]= Sum of the diagonal elements / Total number of observations * 100. At the end, the accuracy of the algorithm with and without the use of altimeter data is compared. |
during hospitalization (up to 1 hour) | |
Secondary | Assessment of the comfort level associated with wearing the sensors | The comfort of wearing the sensors is evaluated after both study phases by a questionnaire. The responses from patients are being collected regarding the discomfort of wearing the sensors or any problems with the attachment. | during hospitalization (up to 10 min) |
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