Effects of remote classes on the physical health of university students during the COVID-19 pandemic.

[Purpose] The purpose of this study is to determine how the study environment during remote classes affected the physical health of university students during the coronavirus disease 2019 pandemic. [Participants and Methods] A total of 3,359 students currently enrolled at our university participated anonymously. The survey was conducted using Google Forms, with items including "gender", "study environment during remote classes", "presence or absence of symptom", "symptoms that existed before starting remote classes", and "changes in symptoms after starting remote classes". [Results] The overall valid response rate was 49%, with a total of 688 males and 983 females providing responses. In the grouping by gender, the number of students with symptoms was significantly higher in females than in males. Similarly, the number of students with existing symptoms that were exacerbated was significantly higher in females than in males. With regards to study environment, a significantly higher proportion of students who sat on the floor during remote classes complained about exacerbated existing symptoms than those who sat on chairs. [Conclusion] The results demonstrate that remote classes during the coronavirus disease 2019 pandemic led to a higher prevalence of new physical symptoms and exacerbation of existing symptoms in females than in males, and when students sat on floors rather than on chairs.