This study investigated longitudinal trajectories of COVID-19 symptoms and physical activity in healthcare workers (HCWs) using the MyHeart Counts App and smart devices. Unsupervised classification analysis identified two symptom duration patterns (long and short). Fatigue and loss of smell were the most prevalent long-term symptoms (24.8% and 21.5%, respectively). Physical activity analysis revealed high and low activity groups, with only 'distance moved walking or running' associated with symptom trajectories. The study highlights the prevalence of long-term COVID-19 symptoms and the potential of wearable devices for monitoring symptom-activity associations.

Varsha Gupta, Sokratis Kariotis, Mohammed D. Rajab, Niamh Errington, Elham Alhathli, Emmanuel Jammeh, Martin Brook, Naomi Meardon, Paul Collini, Joby Cole, Jim M. Wild, Steven Hershman, Ali Javed, A. A. Roger Thompson, Thushan de Silva, Euan A. Ashley, Dennis Wang, Allan Lawrie