BACKGROUND:Longitudinal study of changes in obesity is an important method to explore the etiology, which can provide scientific basis for preventing and control ing obesity.
OBJECTIVE:To investigate the effect of age, observation period and birth cohort on the obesity prevalence of adults in Jiangsu province through the age-period-cohort analysis.
METHODS:20-69-year-old adults in Jiangsu province were col ected as the research objects. The stratified cluster sampling method was used to col ect the obese data in 2000-2010, and analyzed with SAS software. RESULTS AND CONCLUSION:Obesity prevalence of 1946-1950 birth cohort to 1976-1980 birth cohort was gradual y increased (P<0.05) from 2000 to 2010. Obesity prevalence from 1931-1935 birth cohort to 1941-1945 birth cohort was not significantly increased (P>0.05). With the increasing age in each age group of over 25 years old, the risk of obesity was increased gradual y. There were significant differences in the odds ratios between the baseline groups of 20-25 years old and the age groups of over 25 years (P<0.05). Compared with the 1995-1999 birth cohort, the other periods had a slight influence on the obesity prevalence (P>0.05). Compared with 1976-1980 birth cohort, there were no significant differences in the risks of obesity of the birth cohorts after 1951-1955 (P>0.05). But the risk of obesity from 1946-1950 birth cohort to 1931-1935 birth cohort was gradual y significant since the 2000;obesity risks of those born in the different times were different;rural area wil be the key area than 45 years old.

Objective To explore the optimal exercise way of improving the risk indicators of electrocardiogram (ECG) during exercise.Methods Twenty-four healthy male subjects aged between 40 and 49 years old were divided randomly into a control group (n=9),a low amount exercise group of 1200 kcal/wk (n=7) and a high amount exercise group of 2000 kcal/wk (n=8).The intensity of the exercise groups was 65％～ 80％VO2max training in the standard 400 m track for 12 weeks.The accelerometer and polar watch were worn to monitor the exercise process.During the exercise,the exercise amount was controlled using the distance and duration while the intensity was controlled using target heart rate.The subjects took part in the graded exercise test before and after the exercise intervention.Twelve lead electrocardiograms were used to measure the indicators of ST segment depression and corrected QT interval dispersion (QTcd) during the exercise.Results The exercise intervention did not result in significant change in ST segment depression,while the QTcd indicator in both the exercise groups decreased significantly after the intervention (P＜0.05).Moreover,the decrease of QTcd indicator in the low amount exercise group was significantly higher than that of the control group (P＜0.05),while the decrease of QTcd indicator in high volume group was higher than that of the control group (P＜0.01).No significant differences were found in the ST segment depression among the 3 different groups.Conclusion The Twelve-weeks exercise interventions with intensity of 65％ ～ 80％ VO2max and exercise amount of 1200 kcal/wk and 2000 kcal/wk have no effect on the ST segment depression during the exercise.However,they can result in significant decrease in the QTcd of ECG during exercise,reducing the risk of exercise-induced myocardial ischemia.

OBJECTIVE:To investigate therapeutic efficacy and safety of Acetic acid goserelin sustained-release implants (AGRI) in the treatment of ovary endometrium cyst (OEC) recurrence after laparoscopic enuleation of ovarian cyst. METHODS:Totally of 60 patients with OEC recurrence after laparoscopic enuleation of ovarian cyst in Zhangjiagang First People's Hospital dur-ing Jan. 2013-Jan. 2015 were divided into control group and observation group according to random number table,with 30 cases in each group. Both groups were given Mifepristone tablets orally 25 mg,qd. Control group was given Gestrinone capsules orally 2.5 mg,twice a week. Observation group was given AGRI subcutaneously 3.6 mg,once a month. Both groups were treated for consec-utive 6 months. Clinical efficacies of 2 groups were observed as well as the levels of serum follicle stimulating hormone(FSH),lu-teinizing hormone(LH)and estradiol(E2),VAS scores of dysmenorrheal and chronic pelvic pain before treatment,3,6 months af-ter treatment. The occurrence of ADR and the prognosis of 12-month follow-up were observed in 2 groups. RESULTS:Total re-sponse rate of observation group was 86.67%,which was significantly higher than 70.00%of control group,with statistical signifi-cance(P<0.05). After 3 months of treatment,the levels of FSH and LH in 2 groups were decreased significantly compared to be-fore treatment,with statistical significance (P<0.05);the level of E2 had no change;there was no statistical significance in the levels of FSH and LH between 2 groups(P>0.05);after 6 months of treatment,the levels of FSH,LH and E2 in 2 groups were decreased significantly,and the observation group was significantly lower than the control group,with statistical significance(P<0.05). After 3 and 6 months of treatment,VAS score of dysmenorrheal and chronic pelvic pain in 2 groups were decreased signifi-cantly,and the observation group was significantly lower than the control group,with statistical significance(P<0.05). The inci-dence of ADR in observation group was 40.00%,which was significantly higher than 16.70% of control group,with statistical sig-nificance(P<0.05). There was no statistical significance in recurrence rate between 2 groups(P>0.05). The recovery rate of men-struation in observation group was 86.67%,the rate of dominant follicle formation was 60.00% and pregnancy rate was 53.33%, which were significantly higher than 46.67%,46.67% and 33.33% of control group,with statistical significance(P<0.05). CON-CLUSIONS:AGRI shows significant therapeutic efficacy for OEC recurrence after laparoscopic enuleation of ovarian cyst,can ef-fectively relieve dysmenorrhea and chronic pelvic pain,increase the rate of pregnancy. There is still recurrent cases after drug with-drawal. The incidence of ADR is high,but the symptoms are mild.