Pregnancy Articles

Pregnancy Fitness 101

Exercise While You're Pregnant

There was a time when exercise during pregnancy was discouraged--but not anymore! Times have changed, and experts now encourage exercise during pregnancy.

In 2002, the American College of Obstetricians and Gynecologists began recommending that pregnant women should exercise moderately for 30 minutes most days, if not every day (unless there are medical reasons prohibiting it).

Exercise benefits mom by:
  • Improving muscle tone and cardiovascular fitness.
  • Reducing the risk of developing gestational diabetes.
  • Preventing excess weight gain.
  • Improving sleep patterns.
  • Preparing her to hold and carry her growing child.
  • Improving appearance and posture.
  • Promoting circulation and stimulating the digestive processes (which help prevent hemorrhoids, constipation, varicose veins, leg cramps and swelling in the ankles).
  • Alleviating some of the discomforts of pregnancy, such as lower back pain.
  • Strengthening the muscles needed for labor and delivery, which can ease delivery and labor time.

Exercise benefits baby by:
  • Preparing the fetus to transition to the non-maternal environment.
  • Increasing placental efficiency for blood circulation, which supplies oxygen and nutrients to fetus.
  • Decreasing fetal fat without decreasing overall growth of the fetus.
  • Increasing newborn's readiness to self-calm and self-quiet.
  • Increasing fetal movement, which possibly helps develop oral language skills by age 5.

The exercises you can do during pregnancy depend on two things: your current health and how active you were before pregnancy. If you were not active before, don't use pregnancy as the time to begin a strenuous fitness regime; if you exercised before pregnancy, you can continue your program with some slight modifications.

Before you begin (or continue) any exercise program, discuss it with your health-care provider. Together, the two of you can plan an exercise program that is consistent with your current level of fitness and sensitive to any current health conditions. It is mandatory that you consult a health care professional first, especially if you have any of these conditions:
  • Anemia
  • Heart problems
  • Asthma or chronic lung problems
  • High blood pressure
  • Diabetes
  • Thyroid problems
  • Seizures
  • Extremely over or under weight
  • Muscle or joint problems
  • History of spontaneous miscarriages
  • Repeated C-Sections
  • History of premature labors
  • Carrying multiples (e.g., twins, triplets)
  • Incompetent cervix
  • Persistent bleeding
  • A previously sedentary lifestyle

NOTE: If you experience problems such as bleeding, premature labor, dizziness, severe abdominal pain, or unusual fatigue during or after exercise, you should stop immediately and contact your healthcare provider before continuing.
Safe Exercises

Swimming is probably one of the best all around exercises for pregnant women. The buoyancy takes stress off the joints, the water offers smooth movements, falling is not an issue, and the water prevents you from overheating. Other good activities include brisk walking, stationary bicycling, low-impact aerobics, and some forms of yoga. Many health centers offer special exercise classes for pregnant women. Below are demonstrations of a few exercises and stretches you can do at home to help you stay fit throughout your pregnancy.

See Exercise Animations

Warm Up and Cool Down

When you're pregnant, extra blood flows to your uterus and unborn child as a first priority. Although there's plenty of blood to go around, exercising requires additional blood as well. This is why it's so important to warm up before you work out. To help meet the muscles' increased demand for oxygen and blood, take 5 minutes to slowly build up your intensity and increase your heart rate before exercise.

Cooling down when your session is over is just as important because abruptly stopping any exercise can lead to dizziness, faintness, and increased muscle soreness. Spend another 5 minutes cooling down by slowly decreasing your intensity to return your heart rate back to its resting level.

What is a Kegel?

Your pelvic-floor muscles act as a sling for the bladder, uterus, and rectum. Kegel exercises play an important role in helping you heal and recover after labor. Kegels help keep your pelvic-floor muscles strong during pregnancy, help get them back in shape after delivery, and possibly prevent urinary incontinence.

How to do a Kegel: Exhale and tighten the muscles in the walls of your vagina, pulling upward and inward; count to 3 and inhale as you relax. Repeat for a total of 5 repetitions. Do 5 sets, 3 times per day. Gradually work up to holding each Kegel for a count of 10. (If you have difficulty with figuring out if you are doing it right, practice by stopping your flow of urine.) Once you are able to do Kegels, incorporate them into your abdominal exercises and lower body moves.

Exercises To Avoid

Exercises and Activities to AVOID:

As your uterus, abdomen, and breasts grow larger, it can affect your sense of balance. Therefore, you need to be more careful when doing most activities, including standing up and sitting down.

Pregnancy is not the time for contact sports that could cause you to fall, injure yourself, get struck in the abdomen, or badly shake the baby. Therefore, avoid scuba diving, water skiing, basketball, softball, baseball, horseback riding, and snow skiing.

Your changing hormones (more specifically, an increase in the hormone relaxin) also affect your joints, causing them to become relaxed and loose, especially in the pelvic area, knees, and elbows. This loosening makes the joints more flexible but also more unstable, so take extra precaution to prevent injury and maintain balance. Activities like tennis and basketball, which involve a great deal of stopping and starting, are also very stressful on your joints. It's still very important to stretch--but not overstretch--the calves, hamstrings, hip flexors, chest, and lower back to accommodate your changing posture.

Moderate Means Moderate

In the past, experts suggested monitoring your heart rate during exercise, similar to how you would when you are not pregnant. However, new research suggests that heart rate isn't an accurate way to measure intensity during pregnancy. Accordingly, the ACOG has lifted the restriction of the heart rate cap of 140 beats per minute.

When you're pregnant, your heart rate is already increased, and it is more sensitive to changes. For example, light walking may make you feel winded when you used to be able to jog. Experts now suggest using the Rate of Perceived Exertion (RPE) Scale, also called the Modified Borg Scale. This scale ranges from 1 to 10, and is a self-assessment. When pregnant, you should exercise between level 4 (Somewhat hard) and level 6 (Hard).

Do not overdo it. You don't want to become breathless or exhausted. In the proper range, you should be able to carry on a conversation with someone next to you. If you can sing, you may not be exercising intensely enough, but if you are too winded to speak, then slow down. Discuss your exercise intensity and get a recommendation from you healthcare provider beforehand.

Aim for three to five 30-minute exercise session each week at this moderate intensity. Click here for a full explanation of the Rate of Perceived Exertion scale.

Stay Cool and Comfortable

Be sure to wear clothing that provides comfort and keeps you cool. Comfortable, supportive shoes are necessary, especially if you experience swollen feet. Similarly, you may need to invest in a new, more supportive sports bra. Some women even prefer wearing two sports bras when exercising.

Staying cool is very important when you are pregnant. For this reason, it's a good idea to dress in layers. Avoid exercising in rooms with poor ventilation and avoid outdoor exercise altogether when it's hot and humid. Remember to drink plenty of fluids to keep your body's natural cooling system functioning properly. As a guideline, your urine should be almost clear if you are properly hydrated.

This article has been reviewed by Jen Mueller, a certified prenatal and postpartum finess specialist.
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