The Effect Of In-Line Skates Program On Body Composition And Cardiovascular Function In Mentally Retarded Student

Purpose of study Help mentally retarded students to find a efficient and acceptable exercise are very important to keep these people in health. In-line skate might be one of them. In this study, we took the mentally retarded students to take part in this exercise and observed the influence from in-line skate in these subjects'body composition, heart rate, blood pressure and the recovery capability after steps exercise.Methods and Subjects Thirty mentally retarded students were assigned into three groups, the groups were control group(C; n=10), exercise group 1 (T1;n=10), and exercise group 2 (T2;n=10). Subjects in group C and T1 had not learned in-line skate before; Subjects of group T2 had already mastered basical in-line skate skill. The body composition (BMI, Body fat rate, Fat mass, Fat distribution and obesity degree), blood pressure, heart rate of rest and after steps exercise were used to study the effects of in-line skate practice. The experiment period was 3 months. All these parameters were checked in pre- and post-experiment. Subjects of group C carried on the normal activity with unlimited. In-line skate practice protocols were: Group T1 and T2 learned and/or practised the in-line skate for three months, 3 times per week with about 50 minutes for each time, sliding distances were over 2000 or 3000 m, respectively.Results Three months in-line skate practice significantly decreased the group T1 and T2 subjects'Body fat rate, BMI, Fat mass, Fat distribution ,obesity level and recovery time after steps exercise than pre-experiment, but no this kind of change was found in group C. The result revealed that fat mass, rest heart rate, fat distribution and the recovery time after steps exercise were significantly different among group T1, T2 and C. The BMI, body fat rate, fat mass, obesity level and rest heart rate of group T2 were obviously lower than group C, the recovery time after steps exercise of group T2 was also obviously shorter than group C. The results showed the significant differences in some parameters of body composition and recovery ability between group T2 and T1.It means that the practice period would affect the function of subjects.Conclusion 1. The practice of in-line skate obviously reduced mentally retarded student obesity degree. 2. The practice decreased the rest heart rate in mentally retarded students. 3. The practice improved the recovery ability after exercise of mentally retarded students. 4. In-line skate is an interesting exercise with adequate intensity, it could attract mentally retarded to participate in.