The phrase "activity was based on" is correct and usable in written English.
It can be used to indicate that a particular activity or task is derived from or influenced by a specific source or foundation.
Example: "The workshop activity was based on the principles of effective communication and teamwork."
Alternatives: "activity was derived from" or "activity was grounded in".
Second, BMI as with physical activity was based on self-report and assessed at one point in time, which may have biased our results towards the null.
Second, our primary selection of genes whose LOF altered TRAIL activity was based on caspase-3/7 activation 1 hour after the addition of TRAIL, whereas the previous study measured viability 20 hours after the addition of TRAIL.
Encoding activity was based on the contrast between five-letter and one-letter memory sets, while response selection activity was derived from the average of all correct responses in one-letter and five-letter trials.
Endopiceasin was only active against gram-positive bacteria and its activity was based on inhibition of cell wall biosynthesis and lipid II binding (manuscript in preparation).
Step 3: The logistic regression models (one for each EBP activity) was based on variables from step 2 that were entered into two blocks.
Counseling regarding diet and physical activity was based on the Nordic Nutrition Recommendations.
At the time the Black Sash was conceived, organized anti-apartheid activity was based on principles of Gandhian nonviolence.
Alp-Arslan's political activity was based on the ideas that inspired all the three great Seljuq sovereigns.
The algorithm for quantifying the number of personnel involved in each mobility activity was based on the YOLOv232 convolutional neural network architecture for object detection.
The electrochemical detection of HPPD activity was based on the electrochemical oxidation of HGA at +0.1 V vs. Ag/AgCl, using a poly 3,4-ethylenedioxythiophene) poly 3,4-ethylenedioxythiophenescreen-polystyrenectrode.
The peer-critique activity was based on a written sheet received by each group.
