It provides alpha1 parameter, showing its evolution during the last 2 min of the activity.
Alpha1 has been correlated by different authors with physiological thresholds and it is well accepted that alpha1 = 0.75 corresponds to aerobic threshold.
Alpha1 = 0 All these features make the HRM-Pro range top of the line for Garmin users. Busy months ahead The sports watch maker has had a slow 2021 but this year is shaping up to be quite busy. HRM-Pro Plus Specifications. Battery type. User-replaceable CR2032, 3 V. Battery life. Up to 1 yr. at 1 hr./day. Water resistance. 5 ATM 1. Operating temperature range. From 0° to 40°C (from 32° to 104°F) HRM-Pro Plus does not stay connected. Maxym-Karl 1 month ago. Hello, My strap keeps reconnecting around every 5 to 10 seconds systematically (in and out of activity). Here's what I did so far: -Changed battery. -Re-added to third party app and from phone Bluetooth. -Cleaned it and making sure it is wet. 2 months back, I opened the hrm-pro to replace the battery. hrm-pro indicated that the battery was not good anymore. After replacing everything was fine again. The first battery lasted for 11 months. I will try to remove the battery this evening to see if I can get the hrm-pro revived. Same problem with the HRM-PRO that got progressively worse after subsequent battery changes. First factory battery lasted around 10 months with roughly 4 hour usage/week. The second battery lasted 3 months, the 3rd battery 2 weeks. I use quality new batteries. I have removed the battery for 1 minute from this [edited for language] device and after that it works again! Fantastic [edited for language] solution from a 100 EURO Garmin device ! Moderator: Cssaba , please keep the discussion civil. K1hh.