Energy Expenditure Of Middle School Students' Wushu Gymnastics Exercise And The Influence On Physical Fitness After A 12-week Training

Objective:In this study, metabolic gas analyze system K4b~2 is used to measure the energy expenditure of Wushu Gymnastics. The junior high school students are taught on a 12-week Wushu Gymnastics Training plan to compare intervention and control groups before and after the experiment changes On Physical Fitness of students to expect exercise the expansion of project selection and provide a scientific reference, and help young people develop good lifelong habits of physical exercise.Methods:1 Research Subject: This study was from March 2010 to June 2010. Two classes on 8th Grade in a junior high school in Shanghai were selected as research subjects. A total of 33 students in the experimental group (male 20, female 13); control group of 38 students (male 21, female 17).2 Methods:2.1 Literature Study: Refer to the physical science, sports surveying, measurement of energy expenditure, physical research and evaluation of students, statistics and martial arts, martial arts, literature and other aspects of operation. Total number is up to 100.2.2 Experiments:2.2.1 Physical Test: test indicators include: height, weight, body fat percentage, waist, hip, thigh, calf circumference, upper arm skinfold, scapular skinfold, calf skinfold, arm muscle strength, lower extremity muscle strength, vertical jump, standing on one foot when eyes closed, the new Sit and Reach, reaction time. And a derived indicators: BMI(body mass index). Before the start of the exercise intervention and the end of the experiment within a week , all research subject took part in the test.2.2.2 Exercise Intervention: The exercise intervention is used Wushu Gymnastics, which was designed by the Shanghai University Of Sports. It was taught 3 times per week, 40 minutes once and a total of 12 weeks. There are seven sections of the operation is based on martial arts training in basic skills as the main content, supplemented with basic movements such as boxing and kick fitness gymnastics, including flexibility exercises to strengthen the splits, stretching, leg, etc.; enhance muscular endurance step Type, methods, etc.; to strengthen coordination of waving arms, the waist, turn back, waist and so rinse and enhance explosive jumping tumbling training.2.2.3 Energy Expenditure Test: 12 boys in the experimental group were selected to use the K4b~2 metabolic gas analyze system to test while exercising. Tests include: â… . Wushu Gymnastics, which was designed by the Shanghai University Of Sports.(about 10 minutes).â…¡. Broadcast Gymnastics: The third set of secondary school students nationwide broadcast gymnastics "Dancing youth ",(4 minutes and 31 seconds). Indicators: heart rate, O2 consumption per kilogram per minute, respiratory quotient, energy expenditure per kg per hour and metabolic equivalent.Results:1. In this study, tested by the K4b~2 metabolic gas analyze system, the energy expenditure of Wushu Gymnastics is up to 6.9 kcal / kg / h and 6.7METs. The energy Expenditure of broadcast gymnastics during exercise is up to 4.5 kcal / kg / h and 4.4METs.2. The control and experimental groups before and after intervention in the movement of physical test results, only the calf circumference of boys , thigh circumference and calf circumference of girls before and after the intervention was significant difference (p <0.05), other indicators of body shape were no significant differences (p> 0.05).3. The experimental group boys were significant different (p <0.05) on lower extremity muscle strength, vertical jump, standing on one foot when eyes closed, the new Sit and Reach and reaction time. The experimental group girls were significant different (p <0.05) on arm muscle strength, lower extremity muscle strength, vertical jump, standing on one foot when eyes closed, the new Sit and Reach, reaction time, and the vertical jump, upper limbs, lower limb muscle strength three indicators have a very significant difference (p <0.01).Conclusions:1. Using K4b~2 metabolic gas analyze system to test, the junior high school boys` energy expenditure of Wushu Gymnastics is up to 6.7METs (higher than Broadcast Gymnastics). According to intensity of physical activity classification, it is a middle-high-level intensity physical activity.2. Wushu Gymnastics training of junior high school students have the body shape and physical impact, which significantly improve power quality and lower limb circumference, suggesting that martial arts training for middle school students exercise the power of the most obvious quality of the intervention.