Because Landis previously tested within the acceptable ratio limit, speculation as to why a spike in the ratio occurred centered around the possible use of a testosterone patch or gel, which typically provide a relatively low dose of testosterone. (scientificamerican.com)
If the equity portion tends to go higher than the acceptable ratio of say 30 %, then the excess is sold and reinvested into debt and vice versa. (vipinkhandelwal.com)
An acceptable ratio depends on the industry, but consecutive losses and steady dividends may mean the dividend will be cut in the future (ourbigfatwallet.com)