“an established trend”

It is an established trend that men are delaying fatherhood due to professional reasons, and scientific data from studies in animals and humans revealed that sperm quality worsens as men age.

The heavy curriculum and complex social pressure faced during the higher education period make it a process with an established trend of damaging health [ 3 ], and it may cause a long-term impact [ 4 ].

There is no way of knowing now if, in the long term, the increased adoption of online platforms becomes an established trend, or how the pandemic might change biographical research in other ways.

In SSA, late presentation to care is an established trend associated with health inequities, gender disparities, socioeconomic and cultural factors that have ultimately increased cervical cancer mortality rates [ 3 , 5 ].

Some consumers’ interest in local food might have increased and could further increase in the near future, as the demand for local food products revealed to be an established trend resulting from consumers’ economic, environmental, social, and health related motivations, which might at least partly grow in relevance during the Covid-19 pandemic ( Hobbs 2020 ).

The use of large-scale wind turbines is an important path for wind power to reduce costs and increase efficiency, and it is also an established trend in the development of the industry, in order to pursue large-scale development, improve wind power efficiency, and increase the energy conversion rate, new requirements are put forward for the forming process of the blades [ 16 , 17 ].

There is an established trend in walking ability following prosthetic rehabilitation for LLA; the largest improvements in self-reported functional mobility occur between 6 weeks and 4 months post-surgery, after which time function plateaus. 5 While mobility and function improve during rehabilitation, the LLA population may expe