Why do I get different values with two successive measurements?
Different values with successive measurements might have different reasons:
General
- The pause between the measurements was too short.
- Blood pressure and pulse rate
Blood pressure and pulse rate depend on a variety of factors that can have short-term influence on the results as well:
Physical influences
- Psychological influences
- Physical activity
- Muscle tension
- Talking
- Excitement
- Noise, etc.
In addition the way of performing the measuring is relevant:
- Wristband was applied too tight / too loose
- Wristband was not held on the heart‘s height
- No optical or acoustic separation
