You've got it backwards. Over a standard business cycle, a healthy, growing economy is generally correlated with higher (or rising) interest rates, while a weak or contracting economy is correlated with lower (or falling) interest rates. Bond investors demand higher interest rates when they have more confidence in the economy as they would otherwise prefer to invest in equities, and investors settle for lower rates when they have less confidence in the economy as they seek to exit equities in favor of low-risk alternatives.