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==Heart Rate Comparison with Chest Straps==
[[File:Garmin225 Comparison.jpg|none|thumb|500px|Comparison of the Garmin 225 with the [[Garmin Epix]] and the [[Suunto Ambit 2Ambit2]].]]The diagram above is a comparison of the Garmin 225 in red with the [[Garmin Epix]] in blue and the [[Suunto Ambit 2Ambit2]] with the Polar H7 strap in green.
* The workout is a [[High Intensity Interval Training]] session, something that tends to highlight problems in [[Heart Rate]] monitoring due to the rapid changes in intensity. This is a WinTab workout, using 20 seconds all out, 10 seconds recovery, repeated eight times. (This is often confused with a [[Tabata]] workout, but a Tabata uses a specific intensity of 170% of the workload at [[VO2max|V̇O<sub>2</sub>max]], not 'all out'.) The chart does not show the prior [[Warmup]] and short recovery time to rest the various monitors.
* The Wintab is from 1:00 to 5:00 on the chart, followed by a [[Cooldown]] from 5:00 to 14:00. There is then a gentle increase in intensity (going up a hill) from 14:00 to 16:00. After running as gently as possible from 16:00 to 19:00 there is a ~1 minute higher intensity period followed by a short walk to the end.