Effect Of Health-preservation Methods On Pulmonary Ventilation Function In Middle-aged And Elderly People

ObjectiveDeclining lung function is a widespread public health problem that increases the risk of developing diseases related to the respiratory and cardiovascular systems and impairs cognitive functions such as memory and executive ability.In this study,based on the ancient records of lung function improvement in health care texts,we targeted the integration and creation of technical movements to form a new Health-preservation methods,and compared its intervention effect with Liuzijue and walking to investigate the effect of the new Health-preservation methods on lung ventilation function.MethodsThe intervention effect was validated by a simple（unrestricted）randomised single-blind controlled trial.One hundred middle-aged and elderly people who met the criteria in Mengcheng County,Anhui Province,were randomly divided by the random number table method into a new Health-preservation methods group（n=23）,a Liuzijue group（n=26）,a walking group（n=25）and a control group（n=26）.The three exercise intervention groups were given an exercise intervention of 60 minutes five times a week for 12 weeks.The control group was given health education and no exercise intervention during the intervention period.Pulmonary function evaluation system（Master Screen,Germany）was used to test the pulmonary ventilation function of the subjects before and after the intervention.The main indicators included forced vital capacity（FVC）,and the secondary outcome indicators included force expiratory volume in one second（FEV₁）,1-second rate（FEV₁/FVC）,vital capacity（VC）,and maximal voluntary ventilation（MVV）.Intention-to-treat analysis was used,paired-samples t-test was used for intra-group comparison before and after intervention,and one-way analysis of variance（ANOVA）was used for between-group comparison before and after intervention.The correlations between the primary outcome measures and various baseline characteristics were analyzed.Results（1）After the intervention,there were statistically significant differences in FVC,FEV₁,and VC in the new Health-preservation methods group compared with those before the intervention（p<0.05）;all indicators in the Liuzijue group showed an improvement trend compared with those before the intervention,but the difference was not statistically significant（p>0.05）;FVC,MVV and VC in the walking group were statistically significant compared with those before intervention（p<0.05）.（2）There were correlations between height,weight and FVC,and height was strongly correlated with FVC（r=0.631,p<0.001）.（3）After the intervention,a comparative analysis was conducted according to the difference in the level of pulmonary function.The results showed that in the population with mild lung function impairment,the FVC,FEV₁,MVV,and VC of the new Health-preservation methods group were significantly different from those before the intervention（p<0.05）;the Liuzijue group showed an improvement trend in FEV₁,FEV₁/FVC,and MVV,but the difference was not statistically significant（p>0.05）;the difference in MVV in the walking group was statistically significant compared with that before the intervention（p<0.05）.In the population with normal lung function,the Liuzijue group showed a trend of improvement in FEV₁,FEV₁/FVC,and MVV,but the difference was not statistically significant（p>0.05）;there were statistically significant differences in FVC,MVV and VC in the walking group compared with those before intervention（p<0.05）.ConclusionsHealth-preservation methods can promote the pulmonary ventilation function of middle-aged and elderly people with healthy and mild lung function damage,and the effect is different.The intervention effect of the new Health-preservation methods group was more significant for people with pulmonary function impairment,and the intervention effect of the walking group was better for healthy people.