public static double?CalculateHeartRate(IMaxHeartRateStrategy maxHrStrategy,
Rider rider,
double?targetPercent)
{
if (targetPercent.HasValue == false)
{
return(new double?());
}
return(((maxHrStrategy.Calculate(rider) - rider.RestingHeartRateBpm) * targetPercent) + rider.RestingHeartRateBpm);
}