Here is the design of a clinical trial:

Official Title: Taichi for Treating Overweight/Obese Adolescent and Young Women With Polycystic Ovary Syndrome (PCOS)

Included conditions:
- Polycystic Ovary Syndrome

Study Armgroups:
- {'label': 'Taichi', 'type': 'EXPERIMENTAL', 'description': 'The 24 forms of simplified TCC recommended as the popular health sport by the General Administration of Sport of China were applied.', 'interventionNames': ['Behavioral: Taichi']}
- {'label': 'Self-monitored exercise', 'type': 'ACTIVE_COMPARATOR', 'description': 'Exercise was self-monitored and consisted of brisk walking, cycling, jogging, or any other aerobic exercise.', 'interventionNames': ['Behavioral: Self-monitored exercise']}

Interventions:
- {'type': 'BEHAVIORAL', 'name': 'Taichi', 'description': 'The program of Taichi training consisted of 60 minutes exercise sessions, 3 days per week for 12 weeks, based on their original level of physical activity. Each session comprised 40 minutes of Taichi training plus a 10-minute warm-up and cool-down. The Taichi training was instructed by the same experienced Taichi instructors who were qualified in the teaching of Taichi. The 24 forms of simplified Taichi recommended as the popular health sport by the General Administration of Sport of China were applied.', 'armGroupLabels': ['Taichi']}
- {'type': 'BEHAVIORAL', 'name': 'Self-monitored exercise', 'description': 'Exercise was self-monitored and consisted of brisk walking, cycling, jogging, or any other aerobic exercise for 60 mins. 3 days per week for 12 weeks.', 'armGroupLabels': ['Self-monitored exercise']}

Primary Outcomes:
- {'measure': 'Body mass index (BMI)', 'timeFrame': '3 months'}

Please estimate the sample size based on the assumption: 
90% power, two-sided 5% significance level, allocation ratio of 3:2.
Sample size calculation
        This study is an exploratory study of the evaluation of the effectiveness of Tai Chi for PCOS subjects and the feasibility of a large clinical trial; therefore, the minimum sample size necessary to evaluate the effectiveness was used [22].
        For such a trial designed with 90% power and two-sided 5% significance,
        the sample size was set to 50 patients with an allocation ratio of 3:2.