Limitations
infection
INFECTION, RECRUITMENT
Some limitations must be acknowledged. Although no substantial correlations were found between age and any of the outcome measures, groups were different in age at baseline, as the authors put the focus in women and men being equally represented in both groups. Moreover, cardiac frequency was higher in the groups in the post assessment but not in the middle term, due to a change in the order of the evaluations that provoked a bias. Patients were measured just after physical exercise (6MWT), which plausibly increased their cardiac frequency. Participants in this study were eligible for recruitment 5 months after COVID-19 diagnosis. Severity of the symptoms during infection was not recorded for this study.