An impact factor is a way to measure the influence of a journal and the research in it. It is caluclated based on the number of times articles in a journal are cited by others. Impact factors are calucated yearly for journals that are indexed in Journal Citation Reports. Journals with the highest impact factors are generally considered to be the best in their field.
Top 25 Journals by Impact Factor for 2021 in subject "Physical Therapy, Sports Therapy and Rehabilitation" from SJR.
![University of Idaho Library [logo]](https://www.lib.uidaho.edu/media/images/ui_library_horizontal.png)
