"bear a direct relationship" is correct and usable in written English.
It means that two or more things are connected in a very specific way. For example, "The students' grades bear a direct relationship to the amount of time they spend studying."
She added, however, "I would continue to advise charities to use objective standards that bear a direct relationship to the type of distress that different classes of victims are suffering".
The changes bear a direct relationship with the structures of the dyes.
While logit models are rooted in random utility theory and hence real-world choice behaviour, linear probability models do not bear a direct relationship with choice and decision making.
Although the new data are "fascinating," they "remain very contrived in the sense that they don't bear a direct relationship to what we see in the human condition," says Colin Masters, a neuroscientist at the University of Melbourne in Australia.
As such, immunocompetent cells bear a direct relationship to the safety of CNTs in vivo.
Scapular positioning is hypothesized to bear a direct relationship with muscle performance in basketball players who do overhead throwing.
It had been shown that the number and density of these pores bore a direct relationship to the concentrations of carbon dioxide in the Earth's atmosphere.
He thereby created a concept of a universe in which the distances of the planets from the sun bore a direct relationship to the size of their orbits.
The profound comprehension of History is the basis for any comprehension of art and languages, which necessarily bears a direct relationship with the historical conditions circumscribing it (KS, I, x).
On August 14, Justice Thomas W. Trenchard of the New Jersey Supreme Court upheld the ban, stating that "the court is not at liberty to substitute its judgment for that of the municipality's as to the best and most feasible manner of curing traffic evils and traffic congestion where such regulation bears a direct relationship to public safety and is reasonable and not arbitrary".
As such, ΔVO2 bears a direct relationship to MVO2.
