heart rate monitor for freedive

[yossymen]

Hey !

Is there a heart rate monitor (polar,suunto,timex) that can be use underwater on freedive?

Thanks !!!

 

[cdavis]

My Polar, the cheapest one they make, says its good to 30 meters. I have had it a little deeper than that once and many times to 20-28 m and it still works fine.

Connor

 

[chrismar]

Can you get HR graphs on a computer from it afterwards? I'm guessing it won't do R-R frequency, but all the ones that can are useless underwater it seems...

 

[Kimmo]

Hmmm...I guess I mentioned it earlier somewhere in another thread that Suunto T6 (does also R-R frequency) works under the suit when it will be put on the hr belt. I have tested it for about 30 meters. Although that belt may be the most fragile equipment in the depthts (pressure may break it as there is battery inside the belt) so I do not recommend to do what I have done


- kimmo

 

[cdavis]

Mine is a cheapy, no way to hook it to a computer and I've no idea on R-R frequency.

Connor

 

[chrismar]

Mine is a cheapy, no way to hook it to a computer and I've no idea on R-R frequency.

Connor

Bugger.

R-R frequency is the accurate way to record heart rate. Most just count beats in a given time period and multiply out, but R-R HRMs record the interbeat time (beat-to-beat would have made more sense to normal human beans). The bonus is it tells you all sorts of other things, like cardiac stress as a measure of how consistent the R-R frequency is and doesn't record systolic and diastolic as two different beats when your HR drops below ~30bpm.

Kimmo - used to be a T6 user and even got the mem belt. The big issue was trying to sync up when the dive started and ended (accurately!) and the belt only being waterproof to something like 2m. I did try some diving in the belt to a bit less than 20m, but it temporarily stopped working. It was revived, but I decided not to try again...

 

[Kimmo]

Kimmo - used to be a T6 user and even got the mem belt. The big issue was trying to sync up when the dive started and ended (accurately!) and the belt only being waterproof to something like 2m. I did try some diving in the belt to a bit less than 20m, but it temporarily stopped working. It was revived, but I decided not to try again...

As I mentioned I do not recommend it even I have done it


- kimmo

 

[ILDiver]

I have a T6c and I tried to make a case for the belt and watch with leads out to another belt. My case failed and flooded, but it still worked. The second attempt I had less luck. 10 minutes into the session it stopped receiving data. The case flooded again. I'm not certain what my next step will be with this.

 

[myfish]

my polar F11 imploded at 11 meters (rated to 30).
Just caved in and released a small air bubble.

I'd like one rated to 100M like my Suunto D4 even though it might never see
those kind of depths.
I'd like to record HR alongside my dive profiles.

 

[ILDiver]

The only real option I've seen on the market is rather expensive. The GALILEO SOL - SCUBAPRO-UWATEC.

Otherwise you'll have to construct some method to protect the equipment.