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People with long COVID may suffer from a wide range of ongoing symptoms including fatigue, exertional dyspnea, reduced exercise performance, and others. In particular, impaired exercise performance is a condition that can be recovered in many people through an individualized physical exercise training program. However, clinical experience has shown that the presence of post-exertional malaise (PEM) is a significant barrier to physical exercise training in people with long COVID. Currently, there is no guideline or consensus available on how to apply exercise training in this cohort. Therefore, we conducted a literature review in the PubMed library using the following search terms: “COVID”, “post-COVID”, “long COVID” and “exercise” searching for studies from January 2020 to January 2024. Data from 46 trials were included. Exercise training regimes were very heterogeneous and none of these studies reported on the management of PEM in the context of an exercise training program. Based on the feedback from an additional survey that was answered by 14 international experts in the field of exercise training in long COVID, combined with the authors´ own extensive practical experience, a best practice proposal for exercise training recommendations has been developed. This proposal differentiates exercise procedures according to the presence of no, mild/moderate or severe PEM in people with long COVID. These recommendations may guide allied healthcare professionals worldwide in initiating and adjusting exercise training programs for people with long COVID, stratified according to the presence and severity of PEM. Key Points Exercise training is considered as a crucial component of long COVID rehabilitation programs, but it may be complicated by the presence of post-exertional malaise. Currently, there is no consensus on the optimal training strategies for individuals with long COVID, with or without post-exertional malaise (PEM). We propose a best practice proposal for exercise training recommendations that distinguishes between exercise procedures based on the presence of no, mild/moderate or severe PEM in individuals with long COVID. Our best-practice proposal, which is based on scientific literature and extensive expert experience, can guide healthcare professionals in initiating and adjusting exercise training programs for individuals with long COVID, stratified according to the presence and severity of PEM.

Exercise in long COVID is poorly studied. Nevertheless, exerciserehabilitation could improve cardiorespiratory, muscular and autonomic functions. We aimed to investigate improvement in physical and autonomic performances of long COVID patients (n = 38) after a 4-week exercise rehabilitation program (3 sessions/week) compared to two control groups composed of coronary artery disease (n = 38) and fibromyalgia patients (n = 38), two populations for whom exercise benefits are well known. Efficacy of exercise training was assessed by a cardiopulmonary exercise test, a handgrip force test, and a supine heart rate variability recording at rest before and after the rehabilitation program. Cardiorespiratory and muscular parameters were enhanced after exercise rehabilitation in the three groups (p < 0.001). No significant difference was observed for the autonomic variables. Through this comparative study with control groups, we confirm and reinforce the interest of caring for long COVID patients without post-exertional symptom exacerbation by exercise rehabilitation of both strength and endurance training, by personalizing the program to the patient and symptoms.

The protracted form of COVID-19 known as ‘long covid’ was first described in 2020. Its symptoms, course and prognosis vary widely; some patients have a multi-system, disabling and prolonged illness. In 2021, ring-fenced funding was provided to establish 90 long covid clinics in England; some clinics were also established in Scotland and Wales. The NIHR-funded LOCOMOTION project implemented a UK-wide quality improvement collaborative involving ten of these clinics, which ran from 2021 to 2023. At regular online meetings held approximately 8-weekly, participants prioritised topics, discussed research evidence and guidelines, and presented exemplar case histories and clinic audits. A patient advisory group also held a priority-setting exercise, participated in quality meetings and undertook a service evaluation audit. The goal of successive quality improvement cycles aimed at changing practice to align with evidence was sometimes hard to achieve because definitive evidence did not yet exist in this new condition; many patients had comorbidities; and clinics were practically constrained in various ways. Nevertheless, much progress was made and a series of ‘best practice’ guides was produced, covering general assessment and management; breathing difficulties; orthostatic tachycardia and other autonomic symptoms; fatigue and cognitive impairment; and vocational rehabilitation. This paper summarises key findings with the frontline clinician in mind.

Background: Post-COVID-19 Syndrome or long COVID (LC) is a novel public health crisis and, when persistent (>2 years), is a long-term condition. Post-exertional symptom exacerbation (PESE) is a characteristic symptom of LC and can be improved in a structured pacing rehabilitation programme. Aims: To evaluate the effect of an 8-week structured World Health Organisation (WHO) Borg CR-10 pacing protocol on PESE episodes, LC symptoms, and quality of life in a cohort of individuals with long-term LC. Methods: Participants received weekly telephone calls with a clinician to discuss their activity phase, considering their PESE symptoms that week. They completed the Leeds PESE questionnaire (LPQ), C19-YRS (Yorkshire Rehabilitation Scale), and EQ-5D-5L at the beginning of the programme (0 weeks), the end of programme (8 weeks), and at final follow-up (12 weeks). Results: Thirty-one participants (duration of LC symptoms: 29 months) completed the programme. The PESE episodes decreased in number each week (15% fewer each week, 95% CI: 11% to 20%, p < 0.001) and were of shorter duration and milder severity each week. The changes in C19YRS symptom severity and functional disability (0–12 weeks) were statistically significant but not clinically significant. The EQ5D-5L index score change was not statistically significant. Conclusions: A structured pacing protocol effectively reduced PESE episode frequency, duration, and severity but did not produce clinically significant changes in LC symptoms, reflecting the long-term nature of the condition in this cohort.

Background Long COVID is a multisystem condition that negatively impacts daily function. Pacing is a self-management strategy to mitigate symptoms. Our aim was to describe experiences of pacing from the perspectives of adults living with Long COVID. Methods We conducted a community-engaged qualitative descriptive study involving one-on-one online interviews with adults living with Long COVID from Canada, Ireland, United Kingdom, and United States to explore experiences of disability. We asked participants about strategies they used to deal with health challenges living with Long COVID. Interviews were audio recorded and transcribed verbatim. We analyzed data using group-based content analytical techniques. Results Among the 40 participants living with Long COVID, the majority were women ( n  = 25; 63%), white ( n  = 29;73%) and heterosexual ( n  = 30;75%). The median age of participants was 39 years (25th, 75th percentile: 32, 49). Most participants ( n  = 37;93%) used pacing to mitigate or prevent symptoms. Participants described experiences of pacing across five main areas: (1) using pacing as a living strategy (pacing to mitigate multidimensional health challenges; applying pacing to many types of activities; process of pacing experienced as a moving target; pacing experienced as a helpful strategy, but not a cure for Long COVID); (2) learning how to pace (acquiring knowledge about pacing; developing strategies and skills to support pacing); (3) encountering challenges with pacing (learning how to pace; experiencing inequitable access to pacing; experiencing stigma and judgement; undergoing psychological and emotional adjustment from beliefs of ‘fighting’ or ‘pushing through’ to balancing rest with activity; making sacrifices; and encountering unexpected obstacles); (4) experiencing consequences of not pacing; and (5) conceptualising and describing pacing using analogies or metaphors. Conclusions Pacing is a challenging and complex strategy used to mitigate symptoms of Long COVID. Healthcare providers should work collaboratively with patients to further refine and implement this strategy, when appropriate.