Physical activity of children and adolescents and its influencing factors
	    		
		   		
		   			
		   		
	    	
    	 
    	10.3760/cma.j.issn.1674-6554.2018.12.015
   		
        
        	
        		- VernacularTitle:儿童青少年体力活动行为及影响因素分析
 
        	
        	
        	
        		- Author:
	        		
		        		
		        		
			        		Jiancui SUN
			        		
			        		
			        		
			        			1
			        			
			        		
			        		
			        		
			        		
			        		;
		        		
		        		
		        		
			        		Xi KANG
			        		
			        		;
		        		
		        		
		        		
			        		Zhenfang GUO
			        		
			        		;
		        		
		        		
		        		
			        		Xuemei YU
			        		
			        		
		        		
		        		
		        		
		        		
		        			
			        		
			        		Author Information
			        		
		        		
		        		
			        		
			        		
			        			1. 泰山医学院运动医学与康复学院
			        		
		        		
	        		
        		 
        	
        	
        	
        	
        		- Keywords:
        			
	        			
	        				
	        				
			        		
				        		The theory of planned behavior;
			        		
			        		
			        		
				        		Moderate and vigorous physical activity physical activity;
			        		
			        		
			        		
				        		Children and adolescents
			        		
			        		
	        			
        			
        		
 
        	
            
            
            	- From:
	            		
	            			Chinese Journal of Behavioral Medicine and Brain Science
	            		
	            		 2018;27(12):1127-1132
	            	
            	
 
            
            
            	- CountryChina
 
            
            
            	- Language:Chinese
 
            
            
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		        	Abstract:
			       	
			       		
				        
				        	Objective To examine children and adolescents physical activity level and its influencing factors based on the theory of planned behavior (TPB).Methods A total of 353 students aged 8-15 were chosen as samples.Accelerometers were used to measure the moderate-to-vigorous physical activity (MVPA) time and a TPB scale was used to measure the TPB constructs.Results ①Research results showed that only 5.3% of the participating children and adolescents reached the recommended 60 miu MVPA each day.②There were significant gender differences in the attitude (t=1.360,P<0.0 l),MVPA intention(t=2.076,P<0.01) and MVPA time (t=2.076,P<0.05) of children and adolescents.However,there was no significant differences in their subjective norms and perceived behavioral control (P> 0.05).Significant grade differences were also observed for attitude (F (5.352) =2.627,P< 0.05),MVPA intention (F(5.352)=2.890,P<0.05) and MVPA time (F(5.352) =6.156,P<0.01).③The regression results showed that MVPA intention (β=0.130,P<0.01) was significantly related to MVPA time and it explained 0.4% variance.Perceived behavioral control(β=0.496,P<0.01) and attitude(β=0.155,P<0.01) were significantly associated with MVPA intention and explained 1.8% variance.Conclusion The average MVPA time of children and adolescents in this study do not achieve the international recommendation level and the behavioral intention determines their MVPA time.