It's more fun to be out and exercise, but when the body is sick, causing the brain to work. Sometimes it's incredibly fun to imagine and create things, I've made a DataField app called Meter / beat or Meters per heartbeat in Swedish. In this post I will show what Meters / beat app does. For more information about making apps for Garmin products (eg 920XT ) see my article on Garmin Connect IQ .
Power is a measure of how strong an engine is, as defined energy / time unit (unit [Joules / second = Watt = W]). It is possible to measure the effect on a car engine with horsepower. It is also possible to measure the effect of an athlete, but it's not as easy. On the bike's power meter (measuring power = force * distance / time). Measuring force is relatively difficult and power meters for bicycles are still expensive.
For swimming, running and other sports, it is not as easy to measure the athlete's power (since it does not go down in a rotating axis of a machine).
Other interesting measure of how efficiency / performance in an engine's fuel consumption (liters per kilometer). An efficient engine is at the same speed (work) efficiency (better) than a wasteful engine. But what is the equivalent measure for an athlete?
Purpose of measuring meters per heartbeat
When I was making my first app I was looking for a measurement that may be easier to produce than power (power [W]). I then thought of the relationship between speed and heart rate, which according to me is the solution. Given that no interference occurs (wind, temperature, different track profile, etc.) is the velocity at a given pulse is a measure that describes how effective an athlete's engine is! The pulse is usually measured in heartbeats per unit of time [bpm, beats per minute]. 60bpm is resting heart rate 180bpm and my maximum heart rate. Speed is defined as the distance per unit time. => Distance per time / heartbeats per time = meters per heartbeat.
Meters per heartbeat is the athlete's equivalent to fuel consumption.
Is it good?
Help me with this in a comment!
- Meters per heartbeat can be used where there is GPS and heart rate monitor (eg sports swimming, running, biking or hiking)
- Possible to compare the performance and development in a sport
- Possible to compare the relative performance / performance development between different sports
- Cheaper than power / pulse
- Speed and heart rate are affected by weather
Implementation of Garmin Connect IQ
Meter / beat - Meters per heartbeat is the earliest app in Garmin's app store. I have done a Data Field that can be used for this.
But it is expensive with power meter on the bike. It is also very difficult to measure the impact when running / swimming / ...
"Speed / heart rate" = "distance / heartbeat" is a measure which, like a car's engine shows efficiency.
Of course, the speed depends also on the slope, wind, shape, type of passport ... but given that the disturbances are taking themselves out over time should be an improvement made in this metrics at the same type of activity. The measurement can be just as useful (and also more accessible than power / watts).