The phrase "a study proved that" is correct and usable in written English.
It can be used when referencing research findings or evidence that supports a particular claim or conclusion.
Example: "A study proved that regular exercise significantly improves mental health."
Alternatives: "research demonstrated that" or "a study showed that".
Also, a study proved that bilateral asymmetry existed whereby, the farmers tend to have stronger hands on the dominant side because of routine extraneous exercise (Krishan et al. 2010).
Last year, a study proved that reading novels triggered neural changes "associated with physical sensation and movement systems," making readers feel as though they're actually experiencing the same ups and downs as the fictional characters.
Though a study proved that certain athletes, such as Ray Allen, who are incredibly superstitious about their pre-game rituals do actually perform better when they stick to their superstitions, this isn't actually because of the rituals these people followed, but because of their belief in the power these rituals have to influence their performance.
However, previous knowledge [ 34] and other results of this study proved that A. scopulorum was the most divergent species included here.
Last summer, researchers at Yale published a study proving that physicists, chemists and biologists are likely to view a young male scientist more favorably than a woman with the same qualifications.
Comedians say things like: "This week, scientists at Johns Hopkins University published a study proving that straight men enjoy looking at breasts.
In September, for example, Yarrow commented on a study proving that wine competitions generate inconsistent results, but in his own comments refused to beat around the bush, stating that a gold medal is no proof whatsoever that a wine will taste good.
However, the generality of our M-phase data is questioned by a study proving that cyclin E can, at least in rare cases, appear in M-phase cells in human endometrial tumours (Ekholm-Reed et al, 2004b).
I cannot get behind a program where potatoes are free.' " There were other obstacles, including an appearance on the Home Shopping Network, where the men were forbidden from saying that Lifesize helps people lose weight because they had not done a study proving that.
A recent study proved that this type of river delta has a high river vibrio growth and causes increasing risks for infectious diseases (16).
