Jones, Laura; Swingwood, Ema; Shannon, Harriet; (2024) A feasibility study investigating the use of a thigh-worn accelerometer to measure physical activity in patients recovering from critical illness. Journal of the Association for Chartered Physiotherapists in Respiratory Care (ACPRC) , 56 (1) pp. 3-9. 10.56792/RIHA6466.

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Abstract

Background: Rehabilitation of patients recovering from critical illness has been a focus of clinical research, however heterogeneity exists in the measurement of physical recovery. Wearable technology offers a simple, unobtrusive method of continuous activity monitoring. However, studies have reported issues with placement of wrist and ankle devices in critically ill patients. Aim: To evaluate the feasibility of a thigh-worn accelerometer to measure the physical activity of patients recovering from critical illness. Methods: A prospective observational feasibility study was conducted within a 33-bedded critical care unit over nine weeks. Thigh-worn activPALTM accelerometers were applied to patients for the duration of their critical care admission. Results: A total of 12 participants were recruited. Median (IQR) device wear time was 268.35 (299.15) hours or 99.58% of their critical care admission. A priori feasibility success criteria of three days of wear time for more than ten hours were achieved in every participant. Device removal primarily occurred for recharging. Conclusion: The practical application of a thigh-worn accelerometer may be feasible in this population for the duration of admission. As this was a small, single centre study additional research is necessary to further inform and determine the feasibility of this device.

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