record stress during activity

For my "Nap till rested" app I would like to record the naps as "activities" (even the user should be passive ;-) ) into a FIT file.
I've managed to start, stop and save the recording, but on my Instinct 2 Solar watch there are no stress readings after an activity is created, even if the activity is stopped I don't get any stress readings.

I saw that behavior for native activities, e.g. while cycling I don't get any stress values reported, but I thought that is because of too much movement. While napping there is naturally not much movement, but still no stress readings.

Is that a limitation of the Instinct2 watch or a general limitation? And is there any way to get the stress values by the connect API during an activity?

0 flocsy🤠 over 2 years ago

I think it's a general limitation

0 jim_m_58 over 2 years ago

SensorHistory.getStressHistory() and the newest sample. Only available since API Level 3.3.0

Then use fitContrib to put it in the fit file.

Supported devices include the Instinct2/2s and crossover.

See the API Guide.

0 _psx_ over 2 years ago in reply to jim_m_58

Probably during activity system doesn't save any samples.

0 Yeti over 1 year ago in reply to jim_m_58

jim_m_58 that is what I'm doing, but as soon as I create a an activity session`ActivityRecording.createSession({:name=>"Nap", :sport=>ActivityRecording.SPORT_GENERIC});` the sample is always `null`

0 jim_m_58 over 1 year ago in reply to Yeti

real device or sim? Are you wearing the watch if a real device? Where in your code are you getting the data? Post your code for that

0 Kurev over 1 year ago

To my understanding stress level is not measured during activities. Also there is some time period after activity has stopped, where measurement is not done either.

"Stress levels are not measured by your Garmin device during physical activity because the strain of physical activity itself can be considered stressful. The impact of physical activity is best measured and understood in other ways. Public speaking and running up a flight of stairs can both send your heart racing, but the underlying reasons why are fundamentally different."

Stress Tracking | Garmin Technology

With some activities, it would make sense to also track stress. Perhaps you could try SPORT_MEDITATION as activity type, to see if it behaves differently? I also see that during my breathwork exercise stress is recorded someway (but I don't know if this is same data as in stress history API), I guess in that case they use SUB_SPORT_BREATHING subtype.

0 Yeti over 1 year ago in reply to jim_m_58

real device and yes I'm wearing the device.
Here the simplified code of what I'm doing: https://github.com/individual-it/GarminStressReader/tree/recordActivity

When I start the activity, after a while the samples are only `null`
When I stop the activity the stress can be read again

Will now try what @Kurev suggested

0 Yeti over 1 year ago in reply to Kurev

I tried this things:

SPORT_HEALTH_MONITORING => gives me a healthsnapshot showing the stress graph in the connect IQ app on the mobile, but during the activity the watch still cannot read the stress level
SPORT_MEDITATION => just creates a "general" activity in the connect IQ app on the mobile, during the activity the watch cannot read the stress level
SPORT_TRANSITION => creates a "transition" activity in the connect IQ app on the mobile, during the activity the watch cannot read the stress level

the reasons why 1&2 don't work might be that they need the API level 4.1.6, but my Instinct 2 Solar just has 3.4.0