Methods and devices are provided for determining metabolic factors using
electrocardiogram measurements from a person's Wilson points. A first derivative
of an electrocardiogram measurement is calculated. A ratio is calculated of the
absolute value of the positive spike of the first derivative to the sum of the
absolute values of the positive and negative spikes. In some embodiments, the ratio
is multiplied by a constant to determine a metabolic factors. Further operations
may be performed on the ratio to determine other metabolic factors. In some embodiments,
a garment is provided for easily locating Wilson points. Methods and devices are
provided for taking and processing EGC measurements to determine metabolic factors
and for using the metabolic factors to optimize an exercise program.