The phrase "alterations in performance" is correct and usable in written English.
It can be used when discussing changes or modifications in how someone or something performs a task or function.
Example: "The study revealed significant alterations in performance after the new training program was implemented."
Alternatives: "changes in performance" or "modifications in performance".
This can result in significant variations in the type and dosage of administered medications from race to race, with associated alterations in performance.
We are also interested in the relationships between anatomic alterations in aging and neurodegenerative diseases such as AD and FTD, and alterations in performance of cognitive and affective tasks.
Hair mercury levels were associated with detectable alterations in performance on tests of fine motor speed and dexterity, and concentration.
Scores changed in accordance with alterations in performance status and in response to expected clinical changes after therapies.
It is plausible that individually customised CG may induce alterations in performance or leg mechanical characteristics or that the previously reported benefits of CG are due to other physiological mechanisms.
Where Chopin's score markings are correctly stated in publications his compositions still fall prey to alterations in performance, perpetuated by generations of pianistic 'tradition' and stylisation.
The potential significance of an alteration in performance associated with about 25 minutes extra sleep warrants further exploration.
As a consequence, an indirect comparison of practice-related changes in motor performance with muscle activity was performed that requires substantiation by further studies that directly compare practice-related alterations in motor performance associated with changes in muscle activity via correlational analysis.
Bigard AX, Boussif M, Chalabi H & Guezennec CY (1998): Alterations in muscle performance and orthostatic tolerance during Ramadan.
This included alterations in FI performance following both restraint and cold stress and in the corticosterone response to cold stress.
(Indeed, one Columbia staffer recalled that his initial reaction on hearing the concert tape was to remark: "It's a mistake. They're in tune"). If an engineer or producer wanted to make significant alterations in a performance, however, it could certainly be done and no one -- including perhaps the musicians -- would be the wiser.
