RECOVER-ENERGIZE Platform Protocol_Appendix B (Structured Pacing (PEM))

Study interventions will be added to the platform protocol as appendices. Each appendix will leverage all elements of the platform protocol, with additional elements described in the individual appendix. Study intervention appendices may be added or removed according to adaptive design and/or emerging evidence.

The platform protocol enrolls participants who meet study eligibility criteria. After completing initial screening assessments, eligible participants are assigned to one of the study intervention appendices that are actively enrolling. Participants must meet certain criteria within a specific appendix in order to be included in that appendix. Once assigned to an appendix, eligible participants are randomized to either the study intervention group or a control group.

• See NCT06404047 for RECOVER-ENERGIZE: Platform Protocol level inclusion and exclusion criteria which applies to this appendix

Additional Appendix B (Structured Pacing (PEM)) Level Inclusion Criteria:

• Participant identifies new PEM following a SARS-CoV-2 infection that has persisted for at least 12 weeks and is still present at the time of consent
• Score of 2 or greater for both frequency and severity for any of the first 5 questions on the Screening mDSQ-PEM AND Answer of YES to either item 7 or 8 on Screening mDSQ-PEM, and response of >14 h in item 9.

or Score of 3 or greater on any severity question(regardless) and answer of YES to either item 7 or 8 on the Screening mDSQ-PEM, and response of >14h in item 9.

Additional Appendix B (Structured Pacing (PEM)) Level Exclusion Criteria:

• Inability to attend in-person screening visit or participate in weekly visits (in-person [≥ 1] and remote)
• Participant was previously enrolled in Appendix A of this protocol and has NOT completed the full study follow-up period of Appendix A