Women’s Health — all lessons
Anatomy and Physiology
Pelvic floor anatomyUnderstanding the menstrual cyclePhysiological changes before and after pregnancyLife-Stage and Hormonal Conditions
MenopauseOsteoporosisPCOSThyroid disordersHormonal imbalance: what exercise can and cannot doExercise guidelines: step-by-step prescriptionPrenatal Exercise
Contraindications and precautions of prenatal exercisePrenatal exercise prescriptionFirst trimester: strengthening and stretchingSecond trimester: strengthening and stretchingThird trimester: strengthening and stretchingPostnatal Exercise
Postnatal evaluation and abdominal rehabilitationBenefits of postnatal exercise for mother and childPostnatal risks and contraindicationsC-section: post-op management and precautionsPostnatal exercise prescriptionPhysiological changes before and after pregnancy
How pregnancy changes the cardiovascular, respiratory, musculoskeletal and metabolic systems, and what these changes mean for exercise.
Learning objectives
- Describe cardiovascular and respiratory changes in pregnancy
- Explain musculoskeletal and postural changes
- Relate physiological changes to exercise modifications
- Describe postnatal recovery timelines
Before this lesson
Why this matters
Pregnancy changes almost every body system. Understanding these changes explains exercise modifications.
Changes
| System | Change | Exercise implication |
|---|---|---|
| Cardiovascular | Blood volume and cardiac output rise; resting HR increases | Use RPE/talk test |
| Respiratory | Increased ventilation; diaphragm displaced upward later | Breathlessness at lower intensity |
| Musculoskeletal | Hormonal laxity; lordosis; abdominal stretch | Control range; balance work |
| Metabolic | Increased energy needs; altered glucose regulation | Fuel adequately |
| Thermoregulation | Higher heat production | Avoid excessive heat; hydrate |
Exercise guidance
ACOG and the Canadian guideline recommend regular moderate activity for uncomplicated pregnancies [acog2020] [mottola2018].
Postnatal
Many changes reverse over weeks to months; tissues such as the pelvic floor and abdominal wall may take longer.
Common mistakes and misconceptions
Case study
A client in her second trimester feels breathless during her usual runs. The trainer explains the physiology, shifts to RPE-based pacing and adds walk breaks.
Further learning: video lessons
Video links are only marked “verified” after a human has watched them. Unverified entries open a YouTube search for that channel and topic rather than a guessed link.
Physiological changes before and after pregnancy
pelvic-health physiotherapists and women’s health clinicians (search)
You will understand: physiological changes before and after pregnancy
Why: Clinician-led content; verify the specific video.
Exercise guidelines explained
professional bodies (search, e.g. ACOG, CSEP, RCOG)
You will understand: current guideline recommendations
Why: Clinician-led content; verify the specific video.
Knowledge check
Knowledge check · 0/5
1. During pregnancy, blood volume…
2. Resting heart rate in pregnancy is typically…
3. Heart rate zones in pregnancy are…
4. Relaxin and other hormones…
5. As pregnancy progresses, centre of mass shifts…
Short-answer & application questions
- Explain why the talk test is used in pregnancy.
- List postural changes and exercise responses.
- Describe postnatal recovery of key systems.
Key takeaways
- Blood volume rises substantially (roughly 40–50%), and resting heart rate and cardiac output increase.
- Ventilation increases, so breathlessness occurs at lower intensities.
- Hormonal and postural changes alter joint laxity, balance and centre of mass.
- Use RPE and the talk test rather than fixed heart rate zones.
Connected topics
Prenatal exercise prescription
womens healthPostnatal evaluation and abdominal rehabilitation
womens healthContraindications and precautions of prenatal exercise
References
- American College of Obstetricians and Gynecologists (2020). Physical activity and exercise during pregnancy and the postpartum period: ACOG Committee Opinion No. 804. Obstetrics & Gynecology, 135(4):e178–e188. Guideline check pending
- Mottola MF, Davenport MH, Ruchat SM, et al. (2018). 2019 Canadian guideline for physical activity throughout pregnancy. British Journal of Sports Medicine, 52(21):1339–1346. doi:10.1136/bjsports-2018-100056 Guideline check pending
Educational content only — not medical advice. Consult a qualified clinician for diagnosis or treatment.