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ECG and Activity Monitoring: what can we learn?
Maggie Delano maggied@mit.edu @maggied
ECG and Activity Monitoring: what can we learn? Maggie Delano - - PowerPoint PPT Presentation
ECG and Activity Monitoring: what can we learn? Maggie Delano - - PowerPoint PPT Presentation
ECG and Activity Monitoring: what can we learn? Maggie Delano maggied@mit.edu @maggied Electrocardiogram: electrical activity of your heart 16 beats in 18 seconds = 53 bpm 1/RR interval = instantaneous HR F = ma Gravity = -9.8 m/s 2 = -1g
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16 beats in 18 seconds = 53 bpm 1/RR interval = instantaneous HR
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F = ma Gravity = -9.8 m/s2 = -1g
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x y z
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Data sets:
- 1. Daily activities
- 2. Sleep
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Walk Bike Cooking Eating Errands
.
x y z
Cleaning Work Work
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Heart rate: 57 bpm Sitting Respiration
. x
y z
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Heart rate: 97 bpm
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x y z
Respiration Steps
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Heart rate: 147 bpm
.
x y z
Respiration False steps?
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Lesson 1: HR changes a lot.
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Lesson 2: HR changes are interesting, but need more data over time.
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Falling asleep Left side Right Side Toss/Turn Stomach Fitbit sleep efficiency: 95% Time to fall asleep: 6 min Artifact Turn Shift
. x
y z
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Each data point = 60 beat average Artifact Turn Shift
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NOT NOISE!!! Heart rate variability
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Compensatory pause Premature beat
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NOT NOISE!!! Heart rate variability
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Lesson 3: ECG data reveals Premature Atrial Contractions, primarily during sleep.
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Takeaways
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Other cool stuff:
- HRV
- Resp. rate
- CV dynamics
- Trends over time
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ECG and Activity Monitoring: what can we learn?
Maggie Delano maggied@mit.edu @maggied