The open water season is most definitely upon us. Hopefully you’ve already managed a few swims as it’s not too cold, I’ve done 4 and I’m a bit of a cold water wimp. It’s fine.
However I’m looking at HR for my open-water swims. Obviously I’m not going to be looking at my HR as I swim (although maybe after a lap getting the average might be useful for some). However I would like to know what it was afterwards (I measure training load through TRIMPs).
Along a similar vein as the race season for tri’s is now upon us I would really like to know how hard I tried in the swim sections.
My Preferred Option: WAHOO TICKR-X (Reviewed Here) HR pod on a new style Garmin strap (more here). The Wahoo pod CACHES the data and you can upload it later via their APP. AT THE SAME TIME IT WILL ALSO SEND HR DATA to your watch just as any other HR strap does.
Advantages: This option will work for pretty much any watch. Whatever HR you can’t pick up from the strap (which supports ANT+ and BTLE) on your watch or smartphone you can get it later via their APP. The new Garmin strap has more sensors and I’m currently seeing if this is more accurate and/or longevitous.
Disadvantages: You will get an incorrect HR data track for the swim component because of drop-outs (indeed it may be entirely blank) and you will have to overwrite that track later. You will only get HRV from data recorded onto your 910/920 as the wahoo app only, currently, supports TCX export which does not contain HRV R-R data.
Summary: Looks good to me so far!
Another Option: MIO Link (or similar optical HR for wrist). If you put this right next to your Garmin 920XT (only) AND if your watch is in open-water swim mode you should record a HR track (but will not be able to see it as you swim).
Advantages: You get the HR data in the swim data track.
Disadvantages: water ingress to sensor area might cause dropouts, you probably would want to rely on the same MIO for bike+run. This might be less accurate at high HRs. You might choose to wear a chest strap as well for the bike/run.
Summary: Probably OK for training, perhaps not for racing.
|Black Friday 2015||Amazon||UK||Amazon||USA|
|4iiii Viiiiva V100 HRM||£79.99||Link||$77.64||Link|
|4iiii Viva Mini||TBC|
|SMS Bio Sport Ear Bud||£40.97||Link||$69.99||Link|
|Garmin Heart Rate Monitor (Hard)||£31.00||Link||$39.09||Link|
|Garmin HRM-RUN (Soft)||£51.36||Link||$99.99||Link|
|Garmin Premium (Soft)||£31.89||Link||$39.99||Link|
|Jabra Sport Pulse||£99.00||Link||$123.10||Link|
|LifeBeam Smart Helmet||n/a||Link||$185.49||Link|
|PowerTap PowerCal ANT+||£104.49||Link||$95.99||Link|
|PowerTap PowerCal Bluetooth||£87.53||Link||$95.99||Link|
|Suunto Smart Belt||£43.68||Link||$54.91||Link|
|Under Armour Armour39||$62.99||Link|