Purpose: The aim of this study was to identify the challenges of students' physical activities in the Covid 19 outbreak crisis.
Method: This qualitative study was conducted using the six-step method of Sandlowski and Barroso (2007). The meta-synthesis team consisted of faculty members specialized in the field of higher education management and also were familiar with the method of searching databases, educational planning, curriculum planning, and mastering the meta-synthesis research method. 13 related research sources were used as the basis for the analysis, which resulted in the extraction of 4 organizing themes including mental health (containing promoting mental health, creating a cheerful mood and life satisfaction), psychological consequences (containing depression, stress and anxiety management and improving sleep quality), Lifestyle changes (containing leisure management and improving quality of life) and students' self-management strategies (including control of non-communicable diseases, control of infectious diseases, control of musculoskeletal diseases and control of cardiovascular diseases) that the global theme was the challenges of students' physical activity during the Corona epidemic. Data validation was done using validation and transferability techniques through researchers 'self-review and data alignment and researchers' reliability and alignment.
Findings: The components related to the challenges of students' physical activities and the examples found in  research this study can be implied to improve and develop educational programs and counseling in the complementary view of culture building and coexistence in virtual education.
Conclusion: Higher education policy officials and planners are supposed to derive a benefit of these findings to develop and improve courses to deal with students' physical activity challenges.
 
Identifying the Challenges of Students' Physical Activities in Covid-19 Outbreak Crisis with an Integrated Synthesis Research Approach
Introduction: The present study was aimed to identify the challenges of students' physical activities during the crisis of the Corona outbreak. Nowadays, students are considered one of the important strata of the society due to the important role they play in the future administration of the country. The importance of this role lies in the fact that students are considered to be the main experts in various scientific, technical and artistic fields and finally managers and future leaders of other sections of the society, in the path of guidance towards perfection and the realization of the country's goals. In this regard, the higher education system, as a socio-cultural institution, plays an essential and decisive role in training human resources and accelerating the process of growth and excellence of the country. In fact, higher education is a social process that requires the presence of professors and students together in order to fulfill its function. Hence, the classroom is a physical and psychosocial space where wide interactions take place under natural conditions. Currently, due to the spread of the corona virus, which is considered the biggest global crisis after World War II (Safania, Safania, Ariadost 2019), a fundamental change has taken place in the physical and time-spatial context of the formation of classes. Also, the spread of this virus has caused fundamental changes in the educational, psychological and physiological structure of students (Pfefferbaum and Nars 2020). These conditions have completely ruled people's lives; On the other hand, despite the fact that a quarantine period is the best option and recommendation to stop infectious diseases, it will have adverse effects on other dimensions of people's health. The application of strict laws and regulations in the social activities of people in different countries and the closure of universities, schools, businesses, organizations and other centers have caused people, including students, to spend more time in their places of residence (Jiménez-Paven, Carbanel Bayeza). , Lavi 2020) This virus has adverse effects on all areas, so that today there is a belief that after reducing the spread of the corona virus and eliminating this virus, the psychological and even physical effects  remained for several years. The epidemic of Covid-19 showed that more than ever physical activity should be taken seriously not only in the prevention and control of non-communicable diseases, but also in strengthening the immune system to deal with infectious diseases (Chen, Liang, Li et al. 2020). The issue of immobility is very important in a society, especially among students, and it is necessary to measure and control the quantity and quality of their physical activity in order to improve the lifestyle of this group. It should be noted that due to the quarantine and the use of online education, during daily studies, the students spend a significant amount of time in the classroom, studying, using the computer and the Internet, and facing problems such as lack of motivation and problems in time management\, fear of final evaluation, hence, they have been involved physical weaknesses and related diseases. Currently, the lack of physical activity in students seems a big problem because the environmental risk factors and unhealthy behaviors that contributed to the development of heart diseases in adulthood were rooted in the lifestyle of childhood and youth. Therefore, considering the capacity of physical activities in improving the physical and mental condition of people and the significant role of these activities in reducing the mental and physical pressures, it was supposed as a suitable solution to solve this problem.
Materials and methods: This qualitative research was conducted using the six-step method of Sandlovski and Barroso (2007). The meta-combination team consisted of faculty members who were experts in the field of higher education management and were familiar with the method of searching in databases, educational planning, curriculum planning, and also were proficient in meta-combiinaion research methods. 13 related research sources were used as the basis of the analysis that the extraction of 4 organizing themes, including mental health (including improving mental health, creating a spirit of cheerfulness and satisfaction with life), psychological consequences (including depression, managing stress and anxiety, and improving sleep quality ), lifestyle changes (containing free time management and improvement of quality of life) and self-management strategies of students (including non-communicable disease control, infectious diseases, muscle-neuro-musculo-neural diseases, cardiovascular diseases). The validity of data was proved using the techniques of reliability and transferability through researchers' self-review and alignment of data and reliability and alignment of researchers.
Conclusion: The components related to the challenges of students' physical activities and the examples found in the research were helpful to improve and develop educational and counseling programs in the complementary view of culturalization and coexistence in virtual education. In general, the findings of this article showed that controlling the challenges related to students' physical activities played a significant role in their physical and mental health during the outbreak of the Corona virus. Students have been considered the priority of any society, and in our country due to the youth population double their importance in the future administration of the country; therefore, their physical and mental health may directly affected the healthiness of both future society and the country. Despite the fact that the researchers tried to guarantee the validity of the study findings, presenting a category of the challenges of students' physical activities during the Corona outbreak, a precise framework of the mentioned examples based on solving the challenges of students' physical activities has not been compiled and validated. Hence, this issue can be the focus of future researches. Higher education policy officials and planners can use these findings in formulating and improving courses to deal with the challenges of students' physical activities.