What is the Impact of Physical Activities in Home Isolation on Residents’ Well-Being: A Cross-Sectional Survey During the COVID-19 Social Quarantine

Background: During isolation, physical activity can enhance residents’ well-being. The objective of the present study was to examine the associations between residents’ physical activity, health values, and well-being during isolation. Methods: Based on the physical activity rating scale, health values scale, subjective well-being scale, and the satisfaction with life scale, 505 valid questionnaires were collected online from 31 provinces, municipalities and autonomous regions in China. A series of multiple linear regression models were established to study the relationship between variables, and the bootstrap con�dence interval was selected to test the mediating effect. Results: The results showed that during the period of isolation, physical activity directly(b =0.463, p < 0.001) or indirectly(b =0.358, p < 0.001) had a positive impact on residents’ well-being through the mediating effect of health values. There is a positive correlation between physical activity and health values(b =0.710, p < 0.001), while health values had a direct positive impact on well-being(b =0.504, p < 0.001). In addition, moderate amount of physical activity is more likely to improve the well-being of residents during home isolation compared to small and large amount of physical activity. Conclusions:


Background
A large number of early sports psychology studies have proved that physical activity has a positive effect on the mental health of participants [1].The reason why physical activity can bring positive mental-health outcome is that physical activity itself contains "elements" that can make people happy [2].If the effect of physical activity on well-being is described as a "pyramid", then health is a solid base of the pyramid.
The health value of physical activity involves physical health, mental health, social adaptability, and personality improvement [3].At present, the research on the mechanism of how physical activity affect well-being involves physical self-esteem, social interaction, uency, personality and other related variables [2].However, the most important cognition of health value is ignored.Especially after experiencing the COVID-19 pandemic, people pay more attention to the importance of health, and the concept of health value is once again promoted [4].The COVID-19 pandemic means that almost all of have to stay at home and might sit still more than ever before.Many people nd it di cult to engage in various exercises as usual.It's even more di cult for people who don't usually do exercise.However, at this time, it is very important for people of all ages and abilities to stay active as much as possible.Regular physical activity is good for our mental health -reducing the risk of depression and cognitive decline, and delaying the development of dementia, especially for improving our overall well-being [5].
Physical activities are recognized as the "value of well-being" [2].In the past researches, physical activity has gradually become an important indicator to measure the "life satisfaction" and "well-being" of the public, especially the subjective well-being of the public [6].So how do physical activities "integrate into" people's well-being?When participating in and watching physical activities make people experience pleasure, excitement, life value and signi cance, thereby activating well-being [7].For example, in the eld of public health, the impact of physical activity on well-being is not an uncommon topic [8].But in just a few weeks, the global outbreak COVID-19 has made the streets and squares of previously busy cities very quiet.When the video of home sports on social media caused a sensation online, the World Health Organization, national governments, and scholars emphasized that during home isolation, daily exercise in a safe home environment is an important healthy living strategy [9].Therefore, the COVID-19 pandemic situation makes the residents' physical activity subject to unprecedented restrictions and changes people's behavior.So, has the mechanism of physical activity's in uence on well-being changed?In this special situation, it is very important to identify the relevant factors and mechanisms that help to protect and enhance well-being.
Well-being is an individual's overall evaluation and emotional experience of their quality of life, and is an important psychological parameter of an individual's quality of life in a certain society [10].In the study of well-being, it is often divided into subjective well-being and life satisfaction, in which subjective well-being involves positive emotion and lack of negative emotion.In short, when a person has higher life satisfaction and more positive emotions than negative emotions, then he has a higher sense of wellbeing [11].With regard to the relationship between physical activity and well-being, it is generally believed that physical activity is related to positive emotions and life satisfaction.Physical activity is a process of self-entertainment aimed at obtaining psychological pleasure, which will have a certain impact on human health or well-being [12].Recent studies have shown that due to the impact of the COVID-19 pandemic, various restrictions during the isolation period have a signi cant impact on people's physical, mental health and well-being [13].At the same time, people are increasingly aware of the importance of physical health and the importance of body immunity [14].During the period of isolation at home, residents' health values were in uenced by its motivation for physical activity, which changed from the previous physical tness to the rst place of physical tness and mental health [15].Health values refer to the degree of people's awareness of the importance of good health, but only as a single dimension to connect with other psychological factors [16].At present, it is not clear how residents can improve their sense of wellbeing by in uencing their health values during home isolation.
In this study, we will focus on the residents who have participated in physical activity during home isolation, since only through personal experience can they have the most accurate feeling.This study emphasizes the role of physical activity in the sense of well-being during home isolation, and contributes to the exploration of theories related to the relationship between physical activity and well-being.As one of the key factors effecting well-being, this paper also helps us to understand the health values.At the same time, with the current pandemic situation still raging around the world, these change mechanisms will help us to manage and control the impact of the current COVID-19 pandemic on physical and mental health of individuals, and also help us better deal with physical and mental health problems in the coming months or even longer, thereby improving our personal well-being and preventing the occurrence of psychological or physiological diseases.

Physical activity during home isolation
Encouraging the public to get involved in physical activity has become an important public health issue.Physical activity is a kind of activity that develops gradually in the process of human development and consciously cultivates one's own physical quality.Various forms of physical activity such as walking, running, jumping, throwing, and dancing are adopted [17].During the COVID-19 outbreak, governments around the world strongly recommend that the public stay at home and maintain regular physical activity and daily exercise in a safe home environment [18].Maintaining regular daily physical activity is an important part of a healthy lifestyle.At present, there are few researches on physical activity during home isolation, which are mainly from different age stages [19], different social relations [20] and different physical [21] and mental effects [22].The current research on the impact of physical activities on residents' well-being during home isolation suggests that physical activities during the COVID-19 pandemic provide support for the physical health and well-being of the elderly [21].Due to long-term isolation, it may lead to psychological stress and anxiety among residents, and physical activity can reduce the negative effect of stress on the body's immune function, thereby improving health-related quality of life [23].However, there is no quantitative study on both components, and it is not clear how physical activities during home isolation affect residents' well-being, nor does it explain the quantization effect of different levels of physical activities on residents' well-being.

Well-being during home isolation
Well-being is the eternal pursuit of mankind, and is also an eternal topic discussed by researchers.The most of scholars de ne well-being as an individual's positive psychological experience of their own survival and development, which is produced by the joint action of people's objective conditions and people's needs and values.It is the organic unity of life satisfaction and subjective well-being [24].Although there is currently a lack of clear data due to the impact of the COVID-19 pandemic situation, some restrictive measures introduced by various countries have a great impact on the well-being of residents [25].Changes in living habits and work rhythm during the isolation period make residents very likely to feel lonely, lack of sense of purpose and a series of related negative emotions, all of which will lead to a decrease in well-being [26].At present, there are few researches on residents' well-being during home isolation, mainly focusing on the two issues of "what are the components of well-being" as well as "where does well-being come from" during the isolation period.Some studies believe that "physical activity leading to increased immunity" and "abundant family leisure resources" [21], are the factors leading to the well-being of residents during isolation.

Health values
Health has always been a beautiful ideal of mankind, and health values are the cognition of each person's importance to health to varying degrees.Speci cally, health value is the standards and outlooks of individuals' evaluation to all the aspects of health (including physiological, psychological and social functions) [27].As an important variable to study people's participation in health behaviors, health values are directly related to health [28].Those who are highly involved in health-related behaviors generally have higher health values, especially those who measure satisfaction with quality of life based on speci c health-based values [27].Due to the improvement of living conditions, most people are becoming more and more aware of the importance of physical health.Especially after the COVID-19 outbreak, people should be able to clearly realize the signi cance of body immunity [29].Previous studies have con rmed that physical activity can enhance personal health values, and the relationship between them is mutual.In order to pursue health, individuals will certainly enhance their health values, and improving health values will also promote high participation in physical activities [30].Previous studies mainly regarded physical activities as a way to mastering the skill of health knowledge, but ignored the impact of health behaviors on individual health outlook.They also ignored the problem, where the heavier individual physical activities are, the more active the attitude to health [31].However, no research has con rmed the important role of health values in the process of promoting well-being through physical activity.

Model development, variables, and hypotheses
The conceptual model of mediation effect is shown in Fig. 1, with relevant hypotheses detailed in the following paragraphs.
Many people regard physical activity as the source of people's happiness and well-being, which has given birth to the proposition that "physical activity can make people happy".A large number of studies have con rmed that physical activity has a great in uence on well-being.Long term adherence to the habit of physical activity can prevent diseases, reduce depression and stress [8].As we all know, physical activity is good for health, the relationship between physical activity and health is the relationship between means and purpose, and health values are like a bridge connecting the two.Some studies have found that there is a link between physical activity and health, but because of the differences in health values, people in different regions have different values on health [30].Previous studies have found that people with more physical activity pay more attention to health and have a higher degree of control over their health.At the same time, more people self-reported their physical and mental health [31].Accordingly, we make the following hypotheses: H1 A positive relationship exists between physical activity and well-being during home isolation.

H2 A positive relationship exists between physical activity and health values during home isolation.
Health, well-being, quality of life and lifestyle are the core concepts in the eld of public health.There is a direct correlation between health values and health [28], while well-being seems to have a lot in common with modern health concepts.People's health values include people's experiences, thoughts, feelings, emotions, and other immeasurable phenomena [32].These often affect personal well-being [33].According to this logic, health values can also be directly related to well-being.(which may then lead to more physical activity, not otherwise.).Accordingly, we make the following hypotheses: H3 A positive relationship exists between health values and well-being.
Many countries and governments actively encourage citizens to participate in physical activity.They believe that the characteristics of physical activity are bene cial to personal health and well-being.The bene ts of physical activity will affect the value of health and well-being [34].As mentioned above, due to the impact of major public health events, the health values of residents have changed.In order to understand the path and mechanism of physical activity affecting well-being during home isolation, it is proposed that health values play a mediating role between physical activity and well-being (H4).Some studies suggest that more attention should be paid to physical exercise during the covid-19 pandemic to fully understand the positive impact of physical activity on the ability of autoimmune protection and to improve the cognition of health value, so as to promote the generation of well-being [23].
H4 Health values play a mediating role between physical activity and well-being during home isolation.

Procedure and sample
According to the latest editorial published by "The Lancet" on July 24, dealing with the new pandemic situation requires open cooperation among countries.China has basically controlled its pandemic situation, and other countries can learn from China's successful experience in this regard [35].Some studies have found that, in comparison with the number before the COVID-19 outbreak, Chinese residents: a) home tness has attracted more and more people's attention and practice; b) the reason for increasing the frequency of home tness is that people spend more time at home; c) half of the residents with homebased tness activities had their positive emotions strengthened [36].Therefore, Chinese residents are selected as the survey subjects to explore the impact of residents' personal physical activity on health and well-being during home isolation.At the same time, it can provide other countries and regions with Chinese experience values.
This study was conducted in July 2020.The survey was based on the convenience sample of nonprobability sampling, while using the Internet for distribution.The questionnaires were issued and used (https://www.wjx.cn/), and spread through social media.An electronic informed consent form was provided to obtain the participants' consent at the beginning of the questionnaire.At the same time, participants were informed on the rst page of the questionnaire that the survey is anonymous and is for research purposes only.All study procedures were approved by the Ethics Committee of Shenzhen University (Protocol Registration No. PN-2020-42).After 7 days, a nal sample of 543 cases were collected from 21 provinces, 4 autonomous regions, 4 municipalities under the central government and 2 special administrative regions except Tibet, Qinghai, and Taiwan.Then, by lling in the time with 2 polygraph questions and 2 reverse questions, a total of 505 samples were selected for data analysis, while 38 cases did not meet the pre-set standard.The effective sample rate was 93.0%.
The study participants were asked about the amount of physical activity, health values and subjective well-being during the period of home isolation.At the same time, their gender, age, family income, education level, employment status, marital status, housing ownership, BMI, physical activity categories, etc were also recorded.The majority of the respondents were women (55.6%), under 29 years of age (63.2%), with an annual household income of 100,000-200,000 (46.9%), having a bachelor's degree (48.7%), employed (69.7%), unmarried (50.1%), with home ownership (80.8%), and standard body-shape (68.5%).Among them, the respondents' participation in physical activity category (multiple choice questions) can be roughly divided into tness and tness leisure activities (71.1%), recreational games and leisure activities (24.4%), health care activities (19.8%), and similar indoor treadmill, table tennis, badminton and other physical activities (15.1%).

Measures and variables
This study explored the effects of physical activities and health values on well-being of residents during home isolation, and whether there is a mediating role of health values.Therefore, based on previous experience, this study developed a scale investigation process in accordance with standardized procedures.Since the survey was conducted in China, the scale was translated into Chinese in accordance with the reverse translation procedure [37].The content validity of the items in the scale for measuring each construct was evaluated by three scholars and two research assistants.They had to evaluate the content and comprehensibility of the measurement items, and then propose items that need to be re-edited and improved to enhance their clarity, readability, and content effectiveness.The panel also needed to determine whether there is redundancy between items and proposed to improve the quota items of each construct.In order to test the feasibility and reliability of the tool, a pilot test was rst carried out from July 2 to July 5, 2020 on a group of 50 social-media users, between the ages of 18 and 60 years old, in China.The purpose of the pre-survey is to try to improve the quality of questionnaire, delete the unclear items, re ne the survey content and structure, and preliminarily verify the reliability and validity of the scale.
In order to construct the model and the respondents being Chinese residents, combined with the actual situation of Chinese residents' physical exercise, this study selected the physical activity rating scale This study asked the respondents to carefully recall the feelings and experiences of physical activities during the self-isolation period of COVID-19 (the period of activating a Level One public health emergency response in all localities), and make judgments based on these feelings and experiences.The scale showed good reliability and validity in many surveys, with a test-retest reliability of 0.82 [39].The proportion of physical activity level of respondents is shown in Table 1.
In order to measure the well-being of residents in home isolation, the subjective well-being scale and the satisfaction with life scale were used in this study.Both scales were measured using a 5 point Likert scale, with 1 indicating "strongly disagree" and 5 indicating "strongly agree".The subjective well-being scale contains 4 items.Although the scale is short, it has been proved that it can meet and exceed the minimum psychological measurement accuracy standard through the tests of internal consistency, reliability, convergence and discriminant validity of two tests [40].The Satisfaction with Life Scale contains 5 items, which are used to evaluate the respondents' satisfaction with their overall life.The scale is not used to assess satisfaction with life areas such as physiology or nance.After a series of tests, it had good convergence validity and is suitable for the measurement of emotional health [41].
In order to measure the health values of residents during home isolation, the health values scale was used in this study.The scale was measured using a 5 point Likert scale, with 1 indicating "strongly disagree" and 5 indicating "strongly agree".It contains 4 items and 2 reverse items, which are designed to measure the importance that respondents attach to health [42].

Data analysis
Data analysis was conducted in three parts.First, the quality of the measurement model was evaluated by checking the reliability and validity of each construct in two steps [43]: (1) Cronbach's alpha was used to check the internal consistency of each construct, and the results showed that the reliability was at an acceptable level, (2) CFA was performed to check the aggregate validity of the scale, and the score information of each construct was counted.Secondly, considering the need for a mediating test and the comparison between the coe cients of Logit model caused by the heterogeneity of variance, the dependent variable well-being is considered as a continuous variable, and a series of multiple linear regression models were established to perform statistical tests on the aforementioned hypotheses.Finally, the Bootstrap con dence interval was selected to test the mediating effect by using the bootstrapping method (5000 iterations) with 95% bias-corrected con dence intervals [44].

Assessment of the psychometric properties of the measures
Table 2 presents the mean, standard deviation, item-total correlation and Cronbach's alpha value of each construct, in which the reverse question has been recorded.Table 2 shows that Cronbach's alpha values range from 0.77 to 0.88, and all constructs exceed the threshold of 0.75, indicating that the internal consistency within each scale is acceptable [45].Due to the average value of each construct being greater than 3.00, it showed that most of the respondents took part in physical activity during home isolation, and at the same time had good health values, were not bored with home isolation, and still maintained a subjective sense of well-being and life satisfaction with their lives at that time.CFA was performed to analyze the goodness of t for the constructs used in the model: Physical activity, health values, subjective well-being, and life satisfaction.The tting indexes of the nal con rmatory factor analysis model were better, χ 2 = 249.494,df = 98, χ 2 /df = 2.546, RMSEA = 0.055, GFI = 0.939, NFI = 0.954, IFI = 0.972, TLI = 0.965, CFI = 0.972.At the same time, the standardized factor load of each item was greater than 0.5 and less than 0.9, indicating that the polymerization validity is good.As mentioned earlier, considering the need for testing mediating effect and understanding the effect of physical exercise on the well-being of residents during home isolation under different levels of physical activity.Therefore, the independent variable, the dependent variable and the mediating variable are treated as the overall continuous variables, which are not divided into dimensions.According to the standard for evaluation of physical activity scale, the respondents were divided into small amount of exercise, medium amount of exercise and large amount of exercise.Subsequently, a series of multiple linear regression models were established to statistically test the aforementioned hypotheses.The results of the model are shown in Table 3. Note: In order to save table space, the standard error is not given; *** indicates P < 0.001, ** indicates P < 0.01, * indicates P < 0.05, + indicates P < 0.1; the reference term for the amount of physical activity in the model is "small", the reference item for gender is "female", the reference item for BMI is "underweight", the reference item for age is "over 30 years old", the reference item for household income is "less than 100,000", the reference item for education level is "below undergraduate", the reference item for employment status is "unemployed", the reference item for marital status is "unmarried", and the reference item for house ownership is "No".Note: In order to save table space, the standard error is not given; *** indicates P < 0.001, ** indicates P < 0.01, * indicates P < 0.05, + indicates P < 0.1; the reference term for the amount of physical activity in the model is "small", the reference item for gender is "female", the reference item for BMI is "underweight", the reference item for age is "over 30 years old", the reference item for household income is "less than 100,000", the reference item for education level is "below undergraduate", the reference item for employment status is "unemployed", the reference item for marital status is "unmarried", and the reference item for house ownership is "No".

The effect physical activity on well-being during home isolation
In order to test the effect of physical activity and residents' health values on well-being during home isolation, Model 1 was constructed and used as the benchmark for subsequent modeling.Model 1 only studied the effect of physical activity without level difference on the well-being of residents during home isolation.After controlling all the control variables, it can be seen that there is a positive relationship between the amount of physical activity without level difference and the well-being of residents during home isolation, thus Hypothesis 1 holds.In order to better understand the relationship between the two, Model 3 divides the amount of physical activity into standards and further tests categories.The results show that Hypothesis 1 is still valid under different levels of physical activity.Speci cally, the well-being of the respondents with medium amount of physical activity was 0.820 units higher than that of the respondents with small amount of physical activity, while the well-being of the respondents with large amount of physical activity was 0.734 units higher than that of the respondents with small amount of physical activity.Both coe cients were statistically signi cant, and the well-being of the respondents with medium amount of physical activity was 0.086 units higher than that of the respondents with large amount of physical activity, indicating that the moderate amount of physical activity can improve the residents' well-being during home isolation compared with small and large physical activities.In order to further test the relationship between variables, a multi-level regression was conducted for each variable.
As shown in Table 4, the amount of physical activity during home isolation has a signi cant positive impact on well-being (b = 0.463, p < 0.001), thus further verifying Hypothesis 2.

Preliminary test on the effect of health values on wellbeing home isolation
Models 2 and 4 preliminarily tested the effect of health values on well-being during home isolation.Model 2 added the antecedent variable health values to Model 1.The results show that health values have a signi cant impact on well-being during the period of home isolation.For every increase in health values by 1 point, well-being increases by 0.434 units.Considering that the highest score assigned by the scale was 5 points, then the increase was greater.At the same time, it can be seen that the coe cient of physical activity in Model 2 is slightly lower than that in Model 1with a decrease of 0.005 units, which is still statistically signi cant.This shows that after adding the antecedent variable health values, the positive effect of physical activity on the residents' well-being in isolation period still exists, and the effect is slightly reduced, thus Hypothesis 3 holds.Model 4 further veri es Hypothesis 3. It can be seen that the coe cient of the amount of physical activity in Model 4 is more obvious than that in Model 2, and the coe cient of moderate and large amount of physical activity has decreased by 0.248 and 0.193 unitsrespectively, which is also statistically signi cant.Combining the results of Model 1-4, as shown in .This method calculates the direct effect coe cient and indirect effect coe cient of intermediary by repeated resampling of the original sample, and tests whether the coe cient of mediating effect is signi cant through the con dence interval.The test results are shown in Table 5.The results showed that the sample size was 5000, and at 95% con dence interval, the results of the mediation test did not contain 0 (LLCI 0.296, ULCI 0.420), indicating that the mediating effect of health values is signi cant, and the mediating effect value is 0.358.In addition, after controlling the mediating variables of cultural contact, the effect of the antecedent variable of physical activity on the well-being of the outcome variable was still signi cant, the interval (lower limit 0.011, upper limit 0.014) did not contain 0, and the effect value was 0.463.Therefore, during home isolation, health values play a part of mediating role in the effect of physical activity on well-being, and the results provide support for Hypothesis 4.

Discussion
Through the study of physical activity [17,34], health values[28], and well-being [47], our study shows that during COVID-19 outbreak, Chinese residents increased their sense of well-being by increasing physical activity and in uencing health values during home isolation.By linking the dimensions of physical activity, health values, and well-being, the integrated model veri ed in the context of COVID-19 in China has contributed to the public health management neighborhood.The research results show that physical activities can permeate all the relationships between the model structures, thereby proving that during the isolation period, physical activities still have a great impact on residents' well-being, and adhering to the habit of physical activities during isolation can prevent physical and psychological diseases [8].It also shows that during the isolation period, residents can determine whether the amount of their own physical activity is reasonable by calculating the amount of physical activity [38].It is also found that the moderate amount of physical activity can improve the well-being of residents during home isolation compared with the small and large amount of physical activity.It is con rmed that maintaining moderate amount of physical activity during the isolation period has better effect on improving well-being [2].This nding is very important due to the lack of current research on the relationship between personal physical activity and well-being in isolation [2].
Although in the eld of public health, there have been some studies on physical activity and health values personal health values should be taken seriously [49].Owing to the fact that during the isolation period, physical activity could in uence residents' health values, people who have greater the amount of physical activity will pay more attention to their health attitude and have a higher degree of control over their health.This nding supports the importance of health values on physical activity and healthy living [31].
The research also expands the research eld of health values.
Our ndings extend previous studies by showing that health values are correlated with general well-being.Previous studies only discussed the relationship between health and well-being, but did not directly explain the effect of health values on well-being [32].However, this study directly points out that under the in uence of COVID-19 background, residents' health values are changed, thereby affecting the sense of well-being.This nding also validates the results of previous studies from an empirical point of view [33].
This paper expands the proposition research of "where happiness comes from" in the eld of public health.
Model validation shows that physical activity can predict well-being by in uencing health values.
Previous studies have focused on several dimensions of well-being brought about by physical activity [50].The biological nature of physical activity making people happy [51] and the cognitive well-being effects of physical activity (such as life satisfaction, health status, self-esteem level, social environment, etc.) may last for a long time [2], etc.Our research shows that during isolation, as the amount of physical activity at home increases, the health values of residents can be in uenced, thereby further enhancing well-being.This nding supports previous studies [23] suggesting that residents should enhance their awareness of physical and mental health and immunity through physical exercise and leisure activities during isolation, so as to further enhance their sense of well-being.At the same time, it also makes up for the lack of speci c description of the problem of "improving awareness of physical and mental health and immunity" in previous studies.Therefore, we emphasize the need to popularize the health bene ts of physical activity and improve the formation of its values [27].

Limitations And Future Research Directions
The limitation of our study is that the sample size is insu cient and the effective recovery rate is low (68.84%).Since the study took place during the pandemic period, the questionnaire can only be distributed through the Internet.This also makes it impossible to use the con dence interval evaluation method to determine the sample size, so we use 5 to 10 times of the traditional concept to calculate the sample size.When it comes to the employment of interviewees and the ownership of their houses, this sample is not representative.This sample is not representative because physical activity, health values and well-being are affected by employment pressure, work pressure, and house purchase pressure in China.[52].In addition, because we used the internet to collect data, most of the sample ages are less than 30 years old and it may cause a certain deviation in the results.Future research shoud focus on a certain group.
There are limitations in choosing China as the research object.Although COVID-19 broke out earlier and had better control effect in China, it also gave recommendations on family-based physical activity.
However, on a global scale, more cross-cultural and transnational samples are still needed to participate in the research.In addition, this study uses the scale of Chinese and foreign cooperative research and development for the measurement of the amount of physical activity for Chinese people, which may not be representative for other countries.It is recommended that all countries should use the physical activity rating scale, which is suitable for their national conditions to conduct surveys.Therefore, the model proposed in this study needs to be further tested in more geographical locations to determine the universality of the results.
The current study adopts a cross-sectional approach, and the collected data is sent to the sample at a speci c time through a questionnaire.In view of the long-term impact of physical activity process on health values and well-being, and performance results may be observed in the long run, we recommend using longitudinal research designs in future studies to better illustrate causality.In addition, the crosssectional data ignored the difference in the impact of physical activity on well-being before and after the pandemic.Future research could verify the difference between the impact of physical activity on wellbeing in special historical periods and daily periods in the context of natural experiments.
Finally, although this study collected the data of BMI and physical activity categories, and found that BMI had an impact on well-being, it could not explain the reasons due to space limitations.According to previous studies, both physical activity and well-being are affected by BMI [53].At the same time, it also ignores the in uence of the characteristics of different physical activity on the amount of physical activity, health values and well-being.It is suggested that subsequent research can focus on BMI and the characteristics of different physical activity.

Conclusion
This is to explore the impact of physical activity on residents' well-being during home isolation.We constructed and veri ed a mediation model by introducing a mediating variable-health values.The results show the process mechanism of physical activity on residents' well-being during isolation.By showing the important role of physical activity during isolation, this article makes a contribution to the research on physical activity and COVID-19.This study shows that, physical activity during home isolation has a signi cant positive impact on residents' well-being; physical activity during isolation has a signi cant positive impact on residents' health values; residents' health values can not only positively affect their well-being, but also play as a partial mediator in the in uence of physical activity on residents' well-being during the home isolation.In addition, moderate amount of physical activity is more likely to improve the well-being of residents during home isolation compared to small and large amount of physical activity.Therefore, we suggest that residents follow the recommendations of the World Health Organization and governments at all levels for home physical activity, and exercise moderately at home.
Regular physical activity is good for our physical and mental health, especially for improving overall wellbeing.At the same time, it is necessary for the World Health Organization and governments at all levels to strengthen the guidance and publicity of health values, so as to eliminate the impact of COVID-19 on people to a greater extent.

(PARS- 3 )
developed by Japanese scholar Kimio Hashimoto and Chinese scholars in measuring the amount of residents' physical activity during the epidemic period[38].The scale examined the amount of exercise from three aspects of intensity, time and frequency of physical exercise, including three items.Each item was scored with 5 grades.Exercise volume = intensity * (Time-1) * frequency.The highest score was 10 points and the lowest was 0 points.The standard of exercise volume was small exercise volume ≤ 19, medium exercise volume 20-42, and large exercise volume ≥ 43.

[
48].But more for the stimulation of healthy values to physical activity [28].Neglect of the impact of physical activity on personal health values.Our research results indicate that in the context of COVID-19,

Table 2
Reliability analysis of each item in the scale Note: *** indicates that the correlation is signi cant on the 0.01 level.4.2 Assessment of the hypothesized relationships 4.2.1.Modeling strategy

Table 3
The effect of physical exercise on the well-being of residents during home isolation

Table 4
Veri cation of the relationship between variables Note: DV = dependent variable, IVs = independent variable, B = Standardized coe cients.

Table 4
Mediation effect test based on Bootstrap method previous paper preliminarily tested the mediating role of health values in the amount of physical activity and well-being during home isolation.According to the mediating effect analysis procedure, the mediation effect was further analyzed by referring to Hayes's Model 4 and bootstrap methods[46]

Table 5
Regression Coe cients of the Mediation Model