Objective:Through deep analysis of changes of body morphology, physical quality and physiological functions during the process of aerobic exercise on obese adolescents with different gender and age stages, and difference of changes on each body index before and after exercise, we discuss effective method to lose weight of obese adolescents, make the exercise prescription for obese adolescents in totally-enclosed weight-reducing training camp more scientific and effective, provide theoretical and practical basis of the training in such training camp in order to promote health situation of obese adolescents.Methods:Thirty obese adolescents with ages from 10 to 18 who took part in "Ao Rui Te" weight-reducing training camp in ZhengZhou, HeNan Province are used as research object. Study the effect of exercise on body morphology, physical quality and physiological functions of testees with different gender and ages through four-week weight-reducing exercise.Results:(1) Through four-week exercise to reduce weight, we can see obvious decline of obese adolescents'body-weight, BMI, waist circumference, hip circumference, thigh and crus circumference, and waist-to-hip ratio. The situation of obesity has ameliorated effectively. At the same time, rangeability of boys is larger than that of girls. Weight reduction by exercise can meliorate skin-fold thickness of abdomen, upper arm and scapular area. After weight reduction by exercise, changes of skin-fold thickness of upper arm and scapular area of girls are larger than boys, while changes of abdomen are smaller. Four-week weight reduction by exercise can lower the percentage of body fat of obese adolescents effectively. Contents of fat of both male and female testees declined distinctively. Health situations of those testees are improved too. Declining rangeability of body fat percentage of girls is larger than boys. (2) Effect of weight reduction by exercise on body morphology for obese adolescents aged from 13 to 18 is larger than those who aged from 10 to 12. (3) After four-week weight reduction by exercise, physical strength, explosive force, flexibility, ability of balance and functional level of cardiovascular system of obese adolescents have improved, with physical quality improved either. Meanwhile, changes of physical quality of boys are larger than that of girls. (4) Influence of exercise on physical quality of male obese adolescents aged from 13 to 18 is bigger than those aged from 10 to 12, while the result is opposite for female obese adolescents. (5) After four-week exercise, decline of blood pressure and heart rate for obese adolescents are not notable, while indices of vital capacity have improved distinctively. Exercise can also regulate physical basic metabolism of obese adolescents effectively and the change of girls is bigger than boys. (6) Influence of weight reduction by exercise on physiological functions of boys aged from 13 to 18 is larger than that of boys who aged from 10 to 12, while for girls the result is opposite. (7) After four-week exercise, levels of TC, TG and LDL in blood of obese adolescents have marked decline, while the level of HDL has distinct rise. Changes of girls are larger than boys. (8) Changes of biochemical indices for boys aged from 10 to 12 are bigger than those aged from 13 to 18, while the results for girls are opposite. That is to say, the influence of exercise on biochemical indices for obese adolescents aged from 10 to 12 is larger.Conclusions:(1) After four-week training, each physical indices for obese adolescents has improved. Therefore, the exercise prescription used in this research is reasonable and effective. It can improve physical function for obese adolescents in a relatively short period of time and promote their health situations. (2) There's certain relationship between the effect of weight reduction by exercise and age and gender of obese adolescents. Obese people with different ages and gender can have different changes in body morphology, physical quality and physiological functions under the condition of same dietary and exercise lord. Thus, exercise lord need to be adjusted according to the actual situation of obese people. (3) The training mode of totally-enclosed weight-reducing training camp can not only help obese people loss weight, but also correct their bad lifestyle. Therefore, the mode of totally-enclosed weight-reducing training camp is worth to be spread. |