The phrase "are generally less active" is correct and usable in written English.
It can be used to describe a tendency or behavior of a subject in a general context, often in scientific or observational writing.
Example: "In colder climates, many species of animals are generally less active during the winter months."
Alternatives: "tend to be less active" or "are typically less active".
60 Additionally, although girls are generally less active than boys, the physical activity of boys and girls declines rapidly throughout adolescence 1 and therefore boys and girls are in need of physical activity promotion.
The whale almost never lifts its flukes above the surface, and are generally less active on water surfaces than close related Bryde's whales; it rarely breaches.
Children and young people with asthma are generally less active than their non-asthmatic peers.
This activity is significant given the evidence that other antimicrobial agents, such as nisin, are generally less active against Gram-negative species.
In fact, plant RNA silencing-mediated defence pathways are generally less active under low temperatures and more active at high temperatures concomitantly with plant virus activity [ 50, 51].
Lower temperature is known to decrease butterfly activity levels in the field [ 43, 44], and lab observations of B. anynana have indicated that DS butterflies are generally less active than their WS counterparts.
Thus, among Enterobacteriaceae, ciprofloxacin was generally less active than the third-generation cephalosporin, ceftriaxone.
Among them, prenylxanthones 7 13 were generally less active than pyranoxanthones 14 21 in both anticancer and anti-inflammatory assays.
In both experiments, 4 dpf larvae rested significantly more, used a smaller area of the well more frequently, and were generally less active than older larvae.
However, compound 1 was generally less active than the reference drug, doxorubicin but could inspire synthesis of more cytotoxic analogues.
Aged males were generally less active than younger males when tested in the light:dark box, and this difference was significant under low-lighting conditions.
