Low physical activity-PA may affect health outcomes in people with Long COVID. This study assessed the feasibility, safety and preliminary efficacy and effectiveness of a PA coaching programme vs. usual care. A randomised, parallel-group, pilot trial compared a twelve-week multicomponent PA coaching intervention (EG: self-monitoring, feedback, and goal setting/review) with usual care (CG: self-managed PA). PA (inertial sensors-light/moderate/vigorous PA min·day-1, steps·day-1), functional capacity (6-minute walk test-6MWD; 1-minute sit-to-stand test-1minSTS), dyspnoea (modified Medical Research Council scale-mMRC), fatigue (Functional Assessment of Chronic Illness Therapy-Fatigue scale-FACIT-FS) and health-related quality of life-HRQoL (European Quality of Life-Five Dimensions-Five Levels visual analogue scale-EQ-5D-5L) were assessed at baseline, three- and six-months afterwards. Recruitment (≥70%), retention, adherence (≥80%) and preliminary efficacy/effectiveness explored feasibility. Adverse events determined safety. Fifty participants (EG: n=25, 47±10y, 80%♀; CG: n=25, 46±11y, 76%♀) were enrolled. Recruitment (89%), retention (92%) and adherence (83%) met feasibility criteria. At three-months, the EG improved PA, sedentary behaviour and functional capacity compared to the CG (light PA: +5319;89min·day-1; steps·day-1: +46322626;6638; sedentary time: -71-141;-2min·day-1; 6MWD: +11951;187m). Dyspnoea, fatigue and HRQoL also improved (mMRC: -1-2;-1; FACIT-FS: +116;17; EQ-5D-5L: +2113;29). These changes were maintained or further improved at six-months/three-months post-intervention (light PA: +7336;111min·day-1; moderate-to-vigorous PA: +71;14min·day-1; steps·day-1: +52363070;7402; sedentary time: -98-165;-31min·day-1; 6MWD: +13669;203m; 1minSTS: +92;15reps; mMRC: -1-2;-1; FACIT-FS: +1913;24; EQ-5D-5L: +2518;33). No adverse events occurred. The PA coaching programme was feasible, safe and may enhance and sustain PA, sedentary behaviour, functional capacity, symptoms, and HRQoL in Long COVID up to three-months post-intervention. A large trial is warranted. ClinicalTrials.gov: NCT06165978
Diciolla et al. (Tue,) studied this question.