The phrase "activity is substantial" is correct and usable in written English.
It can be used to describe a level of significance or importance regarding a particular activity in various contexts, such as business, research, or project management.
Example: "The recent analysis shows that the activity is substantial, indicating a strong engagement from our participants."
Alternatives: "activity is significant" or "activity is considerable".
The impact of asthma on daily activities is substantial; avoiding exertion (47%) and staying inside (37%) are common approaches to avoid asthma symptoms.
The impact of asthma, chronic bronchitis and allergic rhinitis on all-cause hospitalizations and limitations in daily activities is substantial, and it is markedly different among adult subjects from the general population in Italy.
The impact of asthma, chronic bronchitis and allergic rhinitis on all-cause hospitalizations and limitations in daily activities is substantial, and it is markedly different among adults from the general population in Italy.
Also the reliability of measures of leisure-time physical activities was substantial and higher than that found in US samples [ 19, 23].
The total number of transporter-related activity records is substantial, totaling 11,143 records.
The predictive value of the interest-activity facet is substantial enough to be of clinical importance (one additional remission could be accurately predicted for every three or four patients where interest activity was measured), and obtaining the required information is relatively inexpensive.
Stiffness design, however, was only one consideration as, in an activity where there is substantial inertial loading – and high probability of collision with barriers or other cars – strength is a parallel consideration.
Each year in the disease-endemic area, an estimated 3% of the population becomes infected (3 ); therefore, even if 60% of the infected population is asymptomatic, the potential number of patients who may become ill enough to be unable to perform daily activities or work is substantial.
[Garrett voted in June 2007 to remove language from an appropriations bill indicating that "human activity is a substantial cause of greenhouse gas accumulation in the atmosphere" and "mandatory steps will be required to slow or stop the growth of greenhouse gas emissions into the atmosphere".].
