The phrase "activity is controlled for" is correct and usable in written English.
It is typically used in research or statistical contexts to indicate that a specific variable or factor is being accounted for in the analysis to isolate the effects of other variables.
Example: "In this study, the researchers ensured that the level of physical activity is controlled for to accurately assess the impact of diet on weight loss."
Alternatives: "activity is accounted for" or "activity is adjusted for".
Additionally, in none of these studies habitual physical activity was controlled for between groups.
High levels of occupational and recreational physical activity were controlled for, as were socioeconomic and physical health factors.
Physical activity was controlled for in the logistic regression models from which risk estimates are presented in Tables 2 and 3.
Its failure to predict lower effort levels is more unexpected and evidenced by the insignificant correlation with low effort levels when changes in beta activity were controlled for in the multiple linear regression model.
Distribution of alleles pertaining to CYP2D6 is known to differ between Japanese and Caucasian races (Xie et al 2001), but when the CYP2D6 activity was controlled for separately, and knowing that no ethnic differences seem to exist in CYP3A4 activity (Xie et al 2001), it appears that other as yet unidentified factors are involved.
In this study, we took resting ECG recordings among participants when they were seated quietly for about 7 or 12 minutes, which means that potentially confounding effects by those activities were controlled for.
This contrast is controlled for activity in response to spectral-envelope change in general because it contrasts the difference between varying and fixed acoustic scale in the human voice against the difference between varying and fixed acoustic scale in the other categories.
Several factors, such as nutrition, nicotine consumption, medication and physical activity should be controlled for when inflammation markers are studied.
Activity correlated with total EE at both 20°C and 30°C; however, once the effect of body weight on both activity and EE was controlled for, activity only tended toward (p = 0.05) correlating with EE at 30°C.
Physical activity should also be controlled for when evaluating QOL, as our study indicated.
