Method: For the purpose of this study 45 overweight and obese women were selected as subjects from Pondicherry University, Puducherry, India. The age ranged between 20-29 years. The participants were divided into three groups namely Cardio Exercises group (Group-I, n=15), Pilates exercises group (Group-II, n-=15) and Control Group (Group-III, n=15). Both the Pilates exercises group and Cardio exercises group were undergone training of alternate three days for totally 12 weeks, in each session consist of 45minutes including warming up. The control group did not practice any special training programme. The pre and post of blood sampling test was conducted to assess the thyroid TSH, T3 & T4 in biochemistry lab. The Premenstrual Syndrome (PMS) test was conducted by Premenstrual Syndrome Severity questionnaire.

Findings: The results showed that Cardio and Pilates exercises training were significantly decreased thyroid and PMS in Obese women.

Conclusion: Pilates exercise group had significantly improved in thyroid disorder (4.7 to 4.13 u IU/ml) and fall in to normal value (0.27-4.2 u IU/ml) and Cardio exercise group had significantly improved in thyroid disorder (5.17 to 4. u IU/ml 8 u IU/ml) but not fall in to normal thyroid value. Premenstrual syndrome was significantly decreased in experimental groups when compared to the control group due to the influence of 12 weeks training of cardio and Pilates exercise training on obese women.