"a recent study proved" is correct and usable in written English.
You can use it when discussing the findings of a study that was conducted in the near past. Example: "A recent study proved that regular exercise can improve cognitive function in older adults."
Meanwhile, a recent study proved the increase in the biocompatibility of aged zirconia [21].
A recent study proved what many post 50s already know -- older people are having sex.
Clearly not money, as a recent study proved that in B.C. the average homeless adult with severe addictions costs the public system more than $55,000 per year, while provision of adequate support would reduce this to $37,000.
Although some critics have said that NaOCl treatment is antiquated and dangerous, a recent study proved the opposite [ 72].
A recent study proved a cumulative cytotoxicity of high concentrations of genipin (10 mM) in collagen gels [ 22].
Interestingly, a recent study proved that lobar microbleeds also had stronger influence on cognitive dysfunction compared with microbleeds in other regions [ 17].
AN EDUCATION SUCCESS A recent study proves what most observers already know: Home schooling works.
However, our recent study proved that RB1 expression was significantly higher in the cases with nuclear RB1CC1 expression (grade III) than in the cases without nuclear RB1CC1 (grade I and II) [4].
Our recent study proved that RB1 expression was significantly higher in cases with nuclear RB1CC1 expression (grade III) than in cases without nuclear RB1CC1 (grade I and II)[19].
Recent study proved that IL-10 is required for efficient immune surveillance against the incidence and progression of endogenously arising skin tumors.
Recent study proved that the production of ROS in macrophages was significantly inhibited by TZD administration, indicating the anti-inflammation by activation of PPAR γ [ 21].
