The Experimental Study about Impact of Different Accumulation Moderate to Vigorous Intensity Physical Activity Time in Physical Education Class on Health-related Physical Fitness and Emotional State of Junior High School Students

The objects of the study were the 145 students of five classes in the Grade 1,the study adopted 5×2×2three factors experimental design to confirm the experimental scheme of different accumulation moderate to vigorous intensity physical activity time into physical education,all the experiments were lasted for eight weeks.The results showed that different accumulation moderate to vigorous intensity physical activity time can effectively improve classroom exercise load,and promote to maintain classroom exercise at a relatively stable load range.Physical different accumulated MVPA time increased to improve body composition and muscle strength has a role in promoting the 60% cumulative MVPA exercise time on muscle endurance improvement was significantly better than the control class,accumulated MVPA exercise time more than 50% significantly improved cardiorespiratory endurance,different accumulated MVPA time no significant improvement in impact on flexibility.Physical accumulated MVPA time accounted for more than 40 percent of class time for students to improve emotional state has a role in promoting,in which more than 40% cumulative MVPA time for students to improve the effect of the emotional state of fatigue was significantly better than the control classes of students,60% of female students accumulated MVPA time effort improve emotional state is very significantly better than the control class female students.