González, FelipeCamus, AgustínLeiva, MacarenaMayer, KirbyLeppe, Jaime2023-03-212023-03-212022González-Seguel, Felipe; Camus-Molina, Agustín; Leiva-Corvalán, Macarena; Mayer, Kirby P.; Leppe, Jaime. Uninterrupted Actigraphy Recording to Quantify Physical Activity and Sedentary Behaviors in Mechanically Ventilated Adults: A Feasibility Prospective Observational Study. Journal of Acute Care Physical Therapy 13(4):p 190-197, October 2022. | DOI: 10.1097/JAT.0000000000000193https://repositorio.udd.cl/handle/11447/7119Purpose:  We evaluated the feasibility of quantification of physical activity (PA) and sedentary behaviors (SB) using actigraphy during an entire intensive care unit (ICU) length of stay. Methods: A prospective study was performed in a 12-bed ICU. Triaxial accelerometers were fitted on the right ankle of mechanically ventilated adults. Twenty accelerometers were available to guarantee uninterrupted actigraphy recording 24 hours/day. Data were analyzed: (1) between awakening and ICU discharge to quantify daytime PA/SB and (2) between admission and ICU discharge to quantify day/nighttime inactivity. Secondarily, we assessed the relationship between inactivity/SB and clinical variables. Results: Thirty patients were enrolled, obtaining 5477 recording hours. No patient reported discomfort or injury. The median (min-max) delay time between admission and accelerometer installation was 2.1 (0.0-11.9) hours. Actigraphy recording duration was 5.4 (2.2-34.4) days. The time spent in SB and PA (percentage of minutes per hour) was 94.7% and 5.3%, respectively. PA was stratified by light, moderate, and vigorous levels equating to 91.8%, 7.7%, and 0.5%, respectively. Inactivity time (r = 0.991, P ≤ .001) and SB (r = 0.859, P ≤ .001) were strongly correlated with ICU length of stay. Conclusions: Quantifying PA levels with continuous monitoring through actigraphy is feasible, demonstrating prolonged periods of inactivity/SB. This study highlights that uninterrupted actigraphy could contribute to pursuing the optimal dose and the intervention fidelity of the ICU mobilization in the subsequent clinical trialsenMechanically Ventilated AdultsPhysical Activity and SedentaryActigraphyArticlehttps://doi.org/10.1097/JAT.0000000000000193