VALIDITY OF AN ACCELEROMETER WITH ASSISTED/UNASSISTED MOVEMENT.
Research type
Research Study
Full title
CRITERION VALIDITY AND RELIABILITY OF THE ACTIGRAPH(TM) GT3X ACCELEROMETER IN MEASUREMENT OF BODY POSITION, POSTURAL TRANSITION AND WALKING WITH AND WITHOUT ASSISTANCE: A FEASIBILITY STUDY.
IRAS ID
147297
Contact name
Jayne L Anderson
Contact email
Sponsor organisation
Hull and East Yorkshire Hospitals NHS Trust
Research summary
Can the Actigraph GT3X accelerometer (movement sensor) reliably identify and accurately record functional movements (i.e. involving combinations of lying, sitting, standing and stepping) as typically undertaken by hospital inpatients recovering from critical illness?
Little is known about the regularity of activity undertaken by patients recovering from critical illness in hospital, other than that directly observed and documented by hospital staff.
If this accelerometer model can accurately and reliably record the functional movements typically undertaken by this patient population, it could be used to identify the patterns of activity that patients undertake and if lengthy periods of inactivity occur at similar times during the day. Prolonged inactivity could impact on speed of physical recovery and the likelihood of developing further complications (e.g. Deep Vein Thrombosis and chest infection).
Thirty healthy adult volunteers, wearing comfortable clothing and committing one and a half hours of their time, will wear two accelerometers, one around the ankle and another over the hip to determine if a single site is superior when investigating agreement between accelerometry output and a criterion measure (observation using video recording). Participants will perform and repeat a set of predetermined movement sequences - lying to sitting, sitting to standing and walking a ten metre distance, both independently and with assistance, undertaking instruction on how to simulate someone who is weakened.
Accelerometer output will be compared against time matched frames of the video recording to determine agreement in identification of body position (i.e. lying, sitting or standing). By comparing these two sources we aim to determine whether the accelerometer output can identify the actual movement being undertaken (e.g. sitting to standing), the time it took place and its duration. It will take place within a simulated ward environment within the chief investigators hospital. Data collection is planned to last one month.
REC name
HSC REC B
REC reference
14/NI/1023
Date of REC Opinion
26 Jun 2014
REC opinion
Further Information Favourable Opinion