IRCT20230819059185N1 IRCT 2023-09-24 Faculty of Sports Sciences and Physical Education, University of Isfahan The effect of aquatic exercise in water on thyroid hormone The effect of eight weeks of aquatic exercise on body composition, blood lipids and thyroid hormone levels in pregnant women 2023-10-30 anticipated 30 Complete https://irct.ir/trial/72283 interventional Randomization: Randomized, Blinding: Not blinded, Placebo: Not used, Assignment: Parallel, Purpose: Prevention, Randomization description: The randomization will be in the form of six-block randomization. The current research will be conducted as a clinical trial. Pregnant women will be randomly assigned to the intervention and control groups using blocks of six. The research environment will be Isfahan University. N/A Thyroid hormone, blood lipid levels, body composition. The number of people in the intervention group is 15 people. The intervention group starts training from 20 to 34 weeks of pregnancy. People in the intervention group during pregnancy perform water sports for 8 weeks, 3 sessions a week and each session is 40 minutes with moderate intensity in the indoor swimming pool of Isfahan University under the supervision of a trainer and a midwife. The time of each session includes: impact position, warm-up phase (5 minutes), aerobic phase (20 minutes), strength phase (10 minutes) and the last final phase of returning to the relaxation state (5 minutes) in which relaxation techniques and Muscles are stretched.. No - There is not a plan to make this available Justification or reason for not sharing IPD is There is no further information.