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Heart Rate
Variability (HRV),
Heartbeats, and
Autonomic Nervous
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ANSWatch - a
multi-functional wrist
Frequently Asked Questions (FAQ)
12. Why body movement or talk is not allowed during test?

  • Our arteries in the body are all connected (so-called artery tree)
  • Any movement of any part of the artery tree can cause noises in the pulse signal
  • The movement is especially prohibitive at wrists, hands and arms, neck and head,
    or legs where large arteries exist.  Coughing or talking can also produce noises.
  • ANSWatch has built-in functions to detect occasional body movements.  These
    movements are removed from signal processing and reported as irregular
    heartbeats.  Without such functions, some test parameters (such as heart rate and
    heart rate variability HRV) would be erroneous.  
  • For best test quality and least interference with detection of cardiac arrhythmias, it
    is crucial to keep the patient  in a quiet position throughout the test.
  • When the test is done, it is important for the examiner to review the 5-min pulse
    wave (Press WAVE button in ANSWatch Manager) for test quality.

ANSWatch customers
(professionals and
individuals) for
experience sharing and
in-depth discussions at  
(click to enter)
Do you have     
- are you monitoring   
- are you taking
prescription drugs?
- are you aware of drug
side effects on ANS?
- self-improvement tips
Read more......
Feeling dizzy      
or even fainted?
- are you low in blood
pressure or heart rate?
- are you taking
prescription drugs?
- You may experience
Baroreflex failure
Read more......
Irregular heartbeats?
- often noticing abnormal
heartbeats (missing,
uneven, or super-fast)?
- Yo might have cardiac
- Most sudden death
events are preceded by
irregular heartbeats
Read more......
Mitral Valve Prolapse?
- Mitral valve is the
bicuspid valve between left
atrium and ventricle
- If mitral valve is not
closed properly (called
mitral valve prolapse
MVP), the blood may
backflow during pumping
- there is a strong
connection between panic
attackes and MVP
- How to detect it?
Read more......
Am I having   
- autonomic nervous
system works to fine tune
body conditions depending
on physiological needs
- ANS consists of two
branches: sympathetic and
- do you have balanced
- what are the symptoms of
Read more......
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