THE CONSTRUCTION OF SPORTS PUBLIC SERVICE SYSTEM FOR THE ELDERLY FROM THE PERSPECTIVE OF HEALTHY AGING

With the gradual improvement of people’s quality of life, the average life expectancy of our country has been extended. It is estimated that the total number of the elderly population in China will exceed 250 million by the end of 2020. Therefore, promoting healthy aging is a necessary measure to cope with the coming aging society in China, and physical exercise is an important method to keep the physical and mental health of the elderly. In order to promote the development of healthy aging in China, this study focused on the current level of public sports services for the elderly. This study uses the expert consultation method to test the rationality of the evaluation index, and uses the method of questionnaire survey to score each evaluation index, and uses the analytic hierarchy process (AHP) to calculate the weight of the index. Finally, the paper takes the public sports service of the elderly in a city as an example to verify. The results show that the level of sports public service for the elderly in this city is only 77,928. Especially the two aspects of allocation of sports venues and the use of funds are the most unsatisfactory ones. It can be targeted to improve these two aspects, so as to improve the level of public sports services for the elderly. It is hoped that, through this study, we can provide some reference for improving the level of sports public service for the elderly from the perspective of healthy aging. Esperamos de proporcionar una referencia para mejorar el nivel de servicio público deportivo para las personas añosas desde la perspectiva del envejecimiento saludable.


RESUMEN
Con la mejora paulatina de la calidad de vida de las personas se ha ampliado la esperanza de vida media de nuestro país. Se estima que el número total de personas añosas en China superará los 250 millones a finales de 2020. Por lo tanto, promover un envejecimiento saludable es una medida necesaria para hacer frente al aumento de la edad de la sociedad en China. El ejercicio físico es un método importante para mantener la salud física y mental de las personas mayores. Con el fin de promover el desarrollo del envejecimiento saludable en China, este estudio se centró en el nivel actual de los servicios deportivos públicos para las personas añosas. Este estudio utiliza la consulta de expertos para probar la racionalidad del índice de evaluación, la encuesta de cuestionario para calificar cada índice de evaluación, y el proceso de jerarquía analítica (PJA) para calcular el peso del índice. Finalmente, el trabajo toma como ejemplo a ser verificado, el servicio público deportivo de la tercera edad en una ciudad determinada. Los resultados muestran que el nivel de servicio público deportivo para personas añosas en esa ciudad es de solo 77.928. Especialmente los aspectos de la asignación de instalaciones deportivas y del uso

INTRODUCTION
With the continuous improvement of economic level, people' s quality of life has been gradually improved, and the proportion of the elderly in the total population of the country is rising, and China is facing the situation of social aging. 1 In response to the problem of aging population, comrade Xi Jinping pointed out in the nineteen major reports of the party that we should adopt a positive attitude to cope with the aging of the population. Healthy aging is a method proposed by who in 1990 to deal with population aging. 2 Its core theory is that the elderly adapt to the society well, mental health and physical health. According to the book "old age health Blue Book: China's elderly health research report", physical exercise is an effective way to improve the physical health of the elderly, and it also has a positive effect on the mental health of the elderly. 3 At present, there are still some deficiencies in China's elderly sports public service, but the evaluation of the elderly sports public service is too subjective and fuzzy, there are no certain indicators and more accurate results, so it is difficult to evaluate the current level of sports public service for the elderly in China. 4 Hope that through this study, can provide a certain reference for the construction of sports public service for the elderly in China. 5 Through the research and analysis of domestic and foreign scholars, it can be seen that AHP has been used in various fields, and the effect is mostly good. This study not only uses the analytic hierarchy process, but also revises the research index through expert analysis method. It is hoped that this study can provide some reference for the further development of sports public service for the elderly in the perspective of healthy aging in China.

The analytic hierarchy process (AHP) is used to evaluate the public service for the aged in a city
In order to ensure the scientificity and scientificalness of the study, five experts in related fields were consulted by e-mail, telephone and door-to-door visit. The following Table 1 is the weight table of the first level index obtained by this study combined with expert guidance and AHP.
The above table is the weight table of the first level evaluation index in this study and the test results of its consistency. CR = 0.0328 < 0.1 shows the rationality of the selected indicators. The following Table 2 shows the weight values of secondary indicators and their consistency inspection.
The above table is the weight table of the secondary evaluation index in this study and the test results of its consistency. It can be seen from the table that the consistency index value is less than 0.1, so the selection of secondary index is also reasonable. The following Table 3 shows the three-level indicators of this study (Iacono et al 2015).
The above table is the verification table of the weight of the three-level indicators in this study and the rationality of the index selection. It can be seen from the above table that the maximum consistency index value of the three-level indicators is 0.064, which is less than the specified value of 0.1. Therefore, it can be considered that the selection of three-level indicators in this study is reasonable. Therefore, these indicators can be directly used to study the elderly sports public service system from the perspective of healthy aging. The data collection place of this study is the Sports Square in a city of China. Through the verified evaluation indicators, the elderly people who exercise in the square are investigated   by questionnaire survey, and the three-level indicators are evaluated by scoring in the survey report, and the total score is 100. In the process of this study, 500 questionnaires were made according to the above evaluation indexes, and 365 questionnaires were collected after they were sent out. Moreover, there were some problems, such as incomplete data, damaged questionnaires, dirty data in the questionnaires. After simple pretreatment, a total of 315 questionnaires were sorted out. The average number in the questionnaire was taken as the result of each evaluation index. After sorting out, the results are shown in the Table 4 (Li Yanjiang et al 2017).
The above table shows the survey results of this study. Through the score of each value and the weight of each index, the comprehensive score of sports public service construction for the elderly in the city can be calculated as 77.928, which indicates that although the score of the elderly sports public service under the perspective of healthy aging in this City has passed, the score is not high, which indicates that the elderly sports public service in this city is not high The service level can also be improved. The weight of policy planning and implementation a in the table is 21.3%, but its score is only 17.1. The proportion of sports safety B was 14.7%, and the score was 11.4. In terms of capital investment and use, C accounted for 29.8%, with a score of 24.5. The weight of sports field allocation D is 22.6%, and its score is 15.5. The weight of sports information dissemination and publicity e is 11.6%, and the final score is only 9.5. The full score of this study is 100 points. The Figure 1 shows the comparison between the score of each first level index according to its weight and the actual score.
As can be seen from the above figure, the gap between the two indicators of sports venue allocation, capital investment and use and the ideal state is the largest. Therefore, we can improve the sports public service for the elderly from the perspective of healthy aging from the perspective of improving the allocation of sports venues, investment and use of funds.

CONCLUSIONS
The aging of the population is a problem that China has to face at present. The report of the 19th National Congress of the Communist Party of China pointed out that the health promotion action for the elderly is the top priority of the healthy China action. In order to improve the health level of the elderly and promote the development of healthy aging in China, this study combined with four principles to extract the current factors affecting the elderly sports public service, through expert consultation method, questionnaire method, analytic hierarchy process, and took the status quo of sports public service for the elderly in a City as the object, and verified by the way of examples. The results show that the scores of the five first level evaluation indexes extracted by this research have not reached their ideal values, and the allocation of sports venues and the use of funds are far from the ideal state. We hope that through this study, we can make a certain role in promoting the construction of sports public service for the elderly in our country. In the process of improving the public service system of sports for young people, we should aim at the existing problems and optimize them. However, there are still some deficiencies in this study. Due to the limitation of time and the number of researchers, the study only analyzes one city, and the universality of the study remains to be discussed.

ACKNOWLEDGEMENT
This paper is funded by National social science fund project: The Influence of Fertility Policy Adjustment on the Implementation of National Fitness Strategy and the Study of Policy Response(NO:17BTY046).
All authors declare no potential conflict of interest related to this article Table 4. Survey results.  Figure 1. The ideal score and actual score of each indicator.