Table 1.

Outcome measures summary schedule.

	Initial assessment clinic	Pre HRV-B phase (1 week)	HRV-B phase (4 weeks)	Post HRV-B phase (1 week)
Autonomic screening (NASA Lean Test)	√			√
Autonomic function (COMPASS 31)		√		√
Fitbit wrist strap HRV, sleep data		√	√ daily	√
LC specific PROM C19-YRSm		√	√ weekly	√
WHODAS	√			√
Quality of life (EQ5D-5L)		√		√