Loading...
Pre-order nowPre-order now

Your heart rate while you move around

Cleaning, tidying, moving around the house
OPTICAL

Accuracy

94.3%

Housework Heart Rate Agreement

against an ECG chest strap worn through the same chores

Reference standard

ECG chest strap

Sample size

8 participants

Cooking, tidying, carrying things upstairs: the Ultrahuman Ring stays within five beats a minute of an ECG chest strap, on average.

Ultrahuman RingECG chest strapbeats per minute
94.3%agreement with the chest strap
4.1 bpmaverage difference
+4.1 bpmthe ring reads high, on average
66–117beats per minute the reference covered in study
Figure 1 — One continuous stretch from a single recording. The figures beside it are for the study as a whole, not for the stretch drawn. Average difference tells you how far a typical reading is from the reference, regardless of whether it is high or low. Average offset tells you the direction of that gap — whether the ring reads high or low, on average.
-20-100+1060708090100110120upper limit of agreement (+10.2)lower limit of agreement (-2)average offset +4.1 bpmthe two devices averaged (beats per minute)ring minus chest strap (beats per minute)
Figure 2 — Every five seconds, against the chest strap
One dot is one paired five-second reading, as recorded, pooled across recordings.

Housework is one of the least tidy things your heart rate does all day. Carrying laundry upstairs, scrubbing a pan, reaching into a cupboard: the effort arrives in bursts, so your heart rate climbs and falls repeatedly instead of settling anywhere, and the hand is moving through all of it. Continuous, irregular movement over a continuously moving pulse gives the sensor nothing steady to lock onto.

The movement here is whole hand and whole arm rather than fingertip, which puts a different kind of noise into the signal than a day of typing does. The Ultrahuman Ring is built to hold its reading through both.

The reference rises and falls repeatedly as you move between tasks, and the Ultrahuman Ring reproduces each swing.