Sources & references
From the app’s English Help & Guide · Reference release 1.0.19
How to read these
These references inform Metered’s pacing language and safety wording. They do not make Metered a medical device, diagnostic tool, or treatment plan.
Core topics covered
• PEM and energy management. • Energy-envelope pacing. • POTS diagnostic criteria and hydration guidance. • Heart-rate pacing estimates. • Privacy-sensitive use of Apple Health data.
Sources and further reading
- Treating the most disruptive symptoms first and preventing worsening of symptoms
CDC
Used for PEM timing, pacing language, and the claim that activity management can reduce worsening.
- ME/CFS diagnosis and management recommendations
NICE NG206
Used for energy-management framing and the warning against pushing beyond energy limits.
- 2015 Heart Rhythm Society expert consensus statement
Heart Rhythm Society
Used for POTS criteria wording and the distinction between home checks and diagnosis.
- POTS treatment essentials
Dysautonomia International
Used for cautious hydration guidance and the need for personalised clinician targets.
- Pacing with a heart rate monitor
Workwell Foundation
Used for the resting heart rate + 15 BPM threshold as a starting estimate, not a guarantee.
- HealthKit
Apple Developer Documentation
Used for privacy-sensitive Health permission language and read-only Apple Health framing.