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Exercise and Pregnancy

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Exercise and Pregnancy What are the common responses and adaptations we see in the pregnant exerciser? Guidelines for Exercise 7. Do not exercise at all during an ... – PowerPoint PPT presentation

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Title: Exercise and Pregnancy


1
Exercise and Pregnancy
  • What are the common responses and adaptations we
    see in the pregnant exerciser?

2
(No Transcript)
3
Cardiovascular system
  • Cardiac output
  • rapid increase in 1st two trimesters
  • levels off in 3rd
  • 30-50 above normal
  • increased stroke volume
  • greater strain on heart during exercise

4
Cardiovascular system
  • Blood flow distribution
  • increased flow to surface
  • increased renal, pulmonary, and uterine blood
    flow
  • decreased total peripheral resistance and
    increased peripheral blood flow
  • decreased venous return
  • exercise helps with venous return

5
Cardiovascular system
  • Blood pressure
  • decreased SBP and DBP during 1st two trimesters

6
Cardiovascular system
  • Blood volume
  • increases 50 by end of 2nd trimester
  • increased plasma volume

7
Pulmonary System
  • Diaphragm elevates
  • FRC decreases by 25 due to decreased ERV and RV
  • hyperventilation occurs at rest due to increased
    progesterone levels and changes in the threshold
    of the respiratory centers.

8
Metabolic System
  • Slight increase in blood acidosis
  • Increase in resting VO2 and VCO2

9
Metabolic System
  • Metabolic rate is increased
  • Increased use of carbohydrates as fuel
  • result
  • increased VO2 at any given workload
  • increased O2 debt (EPOC)

10
Musculoskeletal System
  • Increased joint laxity (relaxin)
  • Stretching and thinning of abdominal wall

11
Musculoskeletal System
  • Forward shift in c of g and anterior rotation of
    pelvis
  • Proprioception and coordination are adversely
    effected

12
Benefits of Exercise to the Pregnant Woman
  • 1. Facilitate a general feeling of well-being.
  • 2. Control of body composition.
  • 3. Maintenance or development of optimal posture.
  • 4. Decrease in the minor discomforts of
    pregnancy.
  • 5. Promotes pelvic floor strength.

13
Benefits of Exercise to the Pregnant Woman
  • 6. Maintain or improve aerobic conditioning.
  • 7. Maintain or improve strength and/or
    flexibility.
  • 8. Facilitate general recovery after delivery.
  • Decrease by 1/2 post partum recovery days.
  • 9. Improved tolerance during delivery.

14
Benefits of Exercise to the Pregnant Woman
  • 10. Improved physiologic adaptations to
    pregnancy.
  • 11. Improved ability to dissipate heat.
  • 12. Limits the pregnancy related increase in
    peripheral insulin resistance.

15
Risks to the Mother
  • 1. Risks of injury due to overuse.
  • 2. Increased potential for fatigue.
  • 3. Joint injury.
  • 4. Redistribution of cardiac output.
  • 5. Thermoregulatory problems.

16
Latest Research
  • Most women increase body mass by 20 during
    pregnancy.

17
Latest Research
  • Supine exercise doesnt create abdominal hernias.
  • Abdominal recover within 6 weeks.

18
Latest Research
  • Cardiac remodeling occurs.
  • VO2 Max higher 10-40 weeks post-partum.

19
Latest Research
  • Birth occurs 5-7 days earlier.
  • No increased incidence of premature birth.

20
Latest Research
  • Higher rate of normal delivery.
  • Quicker recovery post-partum.

21
Latest Research
  • Decreased feelings of stress.

22
Latest Research
  • Increased fitness and muscle tone.

23
Latest Research
  • Improved bladder control.

24
Risks to the Baby
  • A. Heat Stress
  • 1. Heat stress and malformation (animal studies).
  • 2. Heat stress and malformation in saunas in
    humans during early pregnancy.

25
Risks to the Baby
  • 3. With exercise there is an increase in skin
    temperature with minor increases in core
    temperature.
  • 4. Exercising studies have not shown the
    correlation between heat stress and
    malformation.

26
Risks to the Baby
  • B. Oxygen Delivery
  • 1. Animal studies show conflicting results.
  • 2. Body can adapt to make-up for decreased blood
    flow - increase hemoconcentration and better
    extraction.

27
Risks to the Baby
  • C. Fetal Heart Rate Changes
  • 1. Conflicting results.
  • 2. Increased HR during start of exercise then it
    levels off.

28
Risks to the Baby
  • 3. No adverse effects.
  • 4. Trained women show less uterine blood flow.

29
Risks to the Baby
  • D. Decreased Blood Flow
  • 1. Animals suggest there is a relationship
    between exercise and low birth weight.

30
Risks to the Baby
  • 2. This does not seem to be a problem in
    rationally trained women.
  • 3. No relationship between exercise and
    miscarriage.

31
Guidelines for Exercise
  • 1. Medical and exercise history of the
    individual.
  • 2. Questions or unusual symptoms
  • bleeding, dizziness,
  • cramping, joint pain
  • faintness, elevated blood pressure,
  • STOP exercising and consult physician.

32
Guidelines for Exercise
  • 3. Listen to your body.
  • 4. Expect some discomfort.

33
Guidelines for Exercise
  • 5. Exercise regularly.
  • 6. Do not exercise vigorously in hot humid
    weather.

34
Guidelines for Exercise
  • 7. Do not exercise at all during an illness with
    fever.

35
Guidelines for Exercise
  • 8. Avoid high impact activities.
  • 9. Drink plenty of fluids.

36
Guidelines for Exercise
  • 10. Rise slowly from down positions.
  • 11. ACOG recommends that the HR not exceed 140
    bpm.

37
Guidelines for Exercise
  • 12. Avoid the valsalva maneuver.

38
Guidelines for Exercise
  • 13. Do not begin a new fitness program.
  • 14. Follow basic fitness principles.

39
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