Group Exercise Instructor Free Test Prep

Category - ACSM Group Exercise Instructor Practice Test

One of the most common cautions cited for the pregnant women concerns exercising while positioned in supine (lying on the back). The weight of the uterus pressing on blood vessels can reduce blood flow to the fetus which creates a potential for fetal hypoxia and possible developmental disorders. Supine exercises for pregnant women are MOST often:
  1. Carefully monitored for duration and repetitions
  2. Avoided after first trimester
  3. Avoided after initial weight gain of five pounds
  4. Avoided all together
Explanation
Answer: B - The latest guidelines from the American Congress of Obstetricians and Gynecologists (ACOG; 2004) stress the need to advise pregnant exercisers to avoid the supine position after the first trimester. This is due to the relationship between the uterus and blood vessels of the thorax, especially the inferior vena cava. While supine, the pressure of the growing fetus impinges on these vessels which can, in turn, reduce cardiac output, lower blood pressure and restrict blood flow to the fetus.
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