Name: HBD - Heart Beat Distance
Rating: 4.9 (7 reviews)
Author: apellegri

HBD - Heart Beat Distance
HBD is a data field that computes the distance travelled per individual heart-beat.

Inspired by the Physiological Cost Index (PCI), HBD provides a simple yet effective measure to gauge how efficiently your heart is able to support physical activity.
https://www.researchgate.net/publication/307039274_Estimation_of_Physiological_Cost_Index_as_an_Energy_Expenditure_Index_using_MacGregor's_Equation

A higher HBD value indicates more efficient cardiovascular performance, as more distance is covered per heartbeat. Conversely, a lower HBD value might suggest inefficiency, fatigue, or increased cardiovascular strain.

CALCULATION MODES:

1. Standard HBD (Gross):
HBD [m/b] = Velocity [m/s] / HeartRate [b/s]
This is the default calculation based on your total heart rate.

2. Net HBD (Optional Setting):
HBD_net [m/b] = Velocity [m/s] / (HeartRate - Resting_HR) [b/s]
By enabling the optional Resting Heart Rate (RHR) integration, the formula isolates the cardiac effort specifically dedicated to the exercise. This provides a "Net" efficiency score by filtering out your baseline metabolic pulse.

WHY MONITOR HBD?

* Track Fitness: Monitor your cardiovascular efficiency gains over time.
* Recovery Tool: A lower than usual HBD during standard routines can be an early indicator of overtraining, dehydration, or oncoming illness.