Freediving training session with Justyna - 175m Dynamic + Static exercises

Hyperventilation start at 07:09 nicely demonstrates the effects of hyperventilation on your body. Despite the fact you are flushing out all CO2, your HR keeps increasing.

In collaboration with    / @pjfreediving   http://www.pjfreediving.pl

Measurement methodology:
HR measurements are done with Polar H10 chest strap

Time between HR recording and video is synchronized by calculating an offset between GoPro internal clock and Polar session start timestamp. Polar workout start timestamp is based on the clock of the phone it’s connected to. Before each pool session, a recording of the phone’s clock is captured, which ensures a correct time offset can be applied to eliminate potential differences between GoPro’s internal clock and HR recording timestamps. This ensures an accuracy of +/- 1s

HR sound is artificially generated based on https://github.com/bencholmes/heartbeat

Shot on April 3, 2024

Diver: Justyna

Timestamps
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00:00 - DYN 175m
00:29 - 25m
00:50 - 50m
01:13 - 75m
01:38 - 100m
02:03 - 125m
02:30 - 150m
02:57 - 175m
03:27 - OK

03:39 - STA 1- 57s (FRC)
04:03 - STA Starts
05:01 - OK

05:13 - STA 2 - 1m 24s (FRC)
05:33 - STA Starts
06:56 - OK

07:09 - STA 3 - 4m 09s (Hyperventilation)
08:34 - STA Starts
12:49 - OK