Physiotherapy During Pregnancy: Safe Exercises for Every Trimester


Pregnancy is not a reason to stop moving. In an uncomplicated pregnancy, regular physical activity can support cardiovascular fitness, muscle strength, mobility and general wellbeing. But as the body changes, the same exercise may not remain appropriate throughout all three trimesters.

This is where physiotherapy during pregnancy exercises becomes different from a generic prenatal workout plan. A physiotherapist can assess pain, movement, pelvic-floor function, strength and individual pregnancy-related changes, then modify exercise according to the mother’s symptoms and stage of pregnancy.

Is Exercise Safe During Pregnancy?

For most women with an uncomplicated pregnancy, staying physically active is safe and beneficial. NHS guidance recommends maintaining normal activity for as long as it feels comfortable, while avoiding exhaustion, overheating and activities with a significant risk of falling or abdominal trauma.

However, exercise should not be prescribed identically to every pregnant woman. Previous fitness level, pregnancy complications, musculoskeletal symptoms and medical advice all need to be considered.

A simple principle for physiotherapists is: modify the exercise, not the movement goal.

First Trimester: Maintain Movement Without Overloading

During the first trimester, many women can continue their existing exercise routine if there are no medical contraindications. Fatigue, nausea and changing energy levels may require reduced intensity or shorter sessions.

Suitable options can include:

● Walking at a comfortable pace 

● Light resistance training 

● Pelvic-floor exercises 

● Gentle mobility work 

● Swimming 

● Low-impact cardiovascular exercise 

● Breathing and postural exercises

A woman who was previously inactive should not suddenly begin a high-intensity programme simply because pregnancy has motivated her to exercise. NHS guidance recommends gradually building activity rather than suddenly starting strenuous exercise.

For physiotherapists, the first trimester is also an opportunity to establish good movement habits, assess existing back or pelvic problems and educate the patient about how exercise may need to change later.

Second Trimester: Adapt to the Changing Body

As the abdomen grows, the centre of mass changes and some women begin experiencing low back pain, pelvic discomfort or reduced balance.

Exercise may need modifications such as:

● Reducing high-impact movements if symptoms increase 

● Using wider or more comfortable stances 

● Adjusting resistance and range of motion 

● Adding supported positions 

● Increasing rest periods 

● Avoiding exercises that cause pain or pressure 

● Modifying floor-based exercises as the abdomen becomes larger

Strength training can still be useful. The focus should shift towards controlled functional movements involving the hips, legs, back, shoulders and trunk.

Pelvic-floor training should also remain part of antenatal care. Supervised pelvic-floor programmes should be individualised according to the woman’s ability to contract and relax the muscles and her specific symptoms or goals.

Third Trimester: Prioritise Comfort, Function and Preparation

The third trimester often requires the greatest number of modifications. Balance changes, increasing abdominal size, fatigue and pelvic or back pain can affect exercise tolerance.

Instead of chasing performance, the focus can move towards:

● Walking or other low-impact cardiovascular activity 

● Functional strength 

● Pelvic-floor control and relaxation 

● Hip and back mobility 

● Breathing strategies 

● Comfortable postural positions 

● Exercises that support daily activities

Positions that become uncomfortable should be modified rather than forced. For women experiencing dizziness or discomfort in later pregnancy, supported or side-lying alternatives may be more appropriate.

The aim is to maintain useful movement while preparing the mother for labour, daily activities and eventual postpartum recovery.

Pregnancy Back Pain: What Can a Physiotherapist Do?

Pregnancy-related back pain should not simply be dismissed as something the mother has to tolerate.

Assessment can identify contributing factors such as altered movement patterns, reduced hip or trunk strength, prolonged sitting, poor load management or pregnancy-related changes in the pelvis.

Treatment may include:

● Individualised strengthening 

● Mobility exercises 

● Postural and movement education 

● Activity modification 

● Manual therapy where clinically appropriate 

● Advice on lifting, sitting and sleeping positions 

● Progressive functional exercise

The programme should be based on the woman’s symptoms rather than a standard pregnancy exercise sheet.

Pelvic Girdle Pain: Don’t Tell Her to “Just Rest”

Pregnancy-related pelvic girdle pain (PGP) can cause pain around the pubic region, lower back, hips, groin or thighs. Activities such as walking, stairs, turning in bed or getting out of a car may become difficult.

Early physiotherapy assessment is valuable because treatment can include exercise advice, activity modification and, when appropriate, a pelvic support belt or other aids.

Patients may benefit from practical changes such as:

● Avoiding prolonged standing or sitting 

● Keeping the knees together when getting in and out of a car 

● Sitting down to dress 

● Avoiding repeated single-leg loading 

● Reducing movements that clearly aggravate symptoms 

● Maintaining comfortable activity rather than complete inactivity

PGP is treatable and should not automatically be considered something a woman must simply tolerate until delivery.

When Should Exercise Be Stopped and Medical Referral Considered?

Not every pregnancy symptom should be managed by exercise modification.

A physiotherapist should refer back to the obstetric or medical team when symptoms raise concern about a pregnancy complication or when the woman has been advised to restrict physical activity. WHO guidance emphasises that women with pregnancy complications require appropriate clinical guidance before participating in physical activity.

Examples of concerning symptoms can include:

● Vaginal bleeding 

● Significant fluid leakage 

● Severe or persistent abdominal pain 

● Chest pain or significant breathing difficulty 

● Fainting or severe dizziness 

● New severe headache or neurological symptoms 

● Painful regular contractions or concerns about preterm labour 

● Significant calf swelling or pain 

● Any sudden or unexplained deterioration in wellbeing

These situations require medical assessment rather than simply reducing exercise intensity.

Physiotherapist vs Prenatal Yoga Instructor: What’s the Difference?

Prenatal yoga can be an excellent way to maintain movement, mobility, relaxation and body awareness during pregnancy. However, a yoga instructor and physiotherapist do not have the same clinical role.

A prenatal yoga instructor primarily delivers adapted movement and yoga practices.

A physiotherapist can assess and manage musculoskeletal and pelvic-health problems, including pregnancy-related back pain, pelvic girdle pain, movement dysfunction and pelvic-floor concerns.

The two can complement each other. A woman with uncomplicated pregnancy may enjoy prenatal yoga, while a woman with persistent pain, functional limitations or pelvic-floor symptoms may benefit from physiotherapy assessment.

Why Should Postnatal Physiotherapy Be Planned Before Delivery?

Postpartum rehabilitation should not be an afterthought.

During antenatal physiotherapy, the clinician can already discuss what recovery may involve after vaginal birth or C-section, including pelvic-floor rehabilitation, abdominal-wall recovery, scar management where appropriate and gradual return to exercise.

This creates continuity between antenatal preparation and postnatal recovery.

It also gives the mother realistic expectations: six weeks is not a universal deadline for returning to unrestricted exercise, and recovery should be based on healing, symptoms and functional milestones.

FAQs

Can pregnant women do strength training?

Yes, many women can continue or undertake appropriately modified strength training during an uncomplicated pregnancy. Load, technique, intensity and exercise selection should be individualised.

Is walking enough exercise during pregnancy?

Walking is a useful form of physical activity, particularly for women who prefer low-impact exercise. However, a balanced programme may also include strengthening and pelvic-floor exercises where appropriate.

Can physiotherapy help pelvic pain during pregnancy?

Yes. Physiotherapy can assess pregnancy-related pelvic girdle pain and provide exercise, movement and activity-management strategies.

When should a pregnant woman see a physiotherapist?

Persistent back pain, pelvic girdle pain, difficulty walking, pain during everyday movements or pelvic-floor symptoms are good reasons to seek assessment rather than simply waiting for delivery.

Conclusion

Safe exercise during pregnancy is not about following one fixed workout plan for nine months. The programme should evolve with the mother’s changing body, symptoms, fitness level and pregnancy stage.

For physiotherapists, this means understanding trimester-specific exercise modifications, recognising pregnancy-related back and pelvic girdle pain, identifying red flags that require referral and preparing women for the transition from antenatal to postnatal rehabilitation.

For clinicians looking to build these skills systematically, a specialised Women’s Health course can provide the foundation for delivering more confident, evidence-informed care across pregnancy and the postnatal period.