Choosing a starting resistance for a postnatal patient is one of those decisions made in seconds and rarely written down anywhere. This sets out how to pick a starting strength, what should actually trigger progression, and why almost every clinic we supply under-orders the lighter end. Written for UK physiotherapists and rehabilitation practitioners.
TL;DR
- Start lighter than the patient's pre-pregnancy strength suggests. You are dosing tissue tolerance, not muscle capacity.
- Quality of movement is the progression criterion, not repetitions completed.
- Doming and leaking are stop signals that override any programme.
- Progress hold time, then repetitions, then position, then resistance. In that order.
- Under-dosing is corrected at review. Over-dosing produces a patient who stops.
- Stock roughly twice as much light as heavy for this caseload.
Why postnatal dosing is different
The limiting factor after birth is rarely the contractile capacity of the muscle. It is the tolerance of connective tissue that has been under sustained load for nine months, and the ability of the pressure system to manage force across the trunk.
That decouples resistance from the patient's fitness history. A patient who trained heavily before pregnancy may still need the lightest loop, because what you are loading is a linea alba and a pelvic floor rather than a glute. Prescribing from their previous training level is the most common error we hear about from clinicians picking up other people's caseloads.
Choosing a starting resistance
Three questions settle it in the room.
- Can they perform the movement slowly, with control, breathing normally? If not, the resistance is too high regardless of how many repetitions they can force out.
- Does the midline stay flat? Any doming means reduce the load or the leverage.
- Is there any leaking or heaviness? Either means the pressure system is not managing at this dose.
If all three are clean and the last two repetitions of a set feel like work rather than a struggle, the dose is about right. If the patient can complete the set with no sense of effort at all, you have gone too light, which is easily fixed at review.
Practical starting points
- First six weeks, or pre-clearance: no external resistance. Breathing, pelvic floor, bodyweight glute bridges.
- Post-clearance, uncomplicated: lightest loop for clamshells and bridges. Lightest or second flat band for upper body.
- Post-caesarean: as above but later, and with abdominal loading deferred further.
- Symptomatic prolapse or leaking: lightest available, and prioritise pelvic floor training before adding load.
- Diastasis with doming: regress leverage before reducing resistance. Range often matters more than strength here.
What should trigger progression
Not the calendar, and not repetitions completed. Progress when the patient can perform the current dose with good control, a flat midline, normal breathing and no symptoms, across two consecutive sessions.
The order matters and is frequently done backwards:
- Hold time or tempo. Slow the movement or lengthen the hold before anything else.
- Repetitions. Add volume at the same resistance.
- Position. Lying, then sitting, then standing, then loaded through range. Gravity is a progression.
- Resistance. Last. Moving up a strength is the biggest jump available and is often applied first.
Our guidance on postnatal exercise contraindications covers the screening that sits underneath all of this.
Regression is a tool, not a failure
Patients read a reduction as going backwards, so name it before it happens. Telling someone at the outset that you will occasionally make an exercise easier, and that this is how the programme works rather than a setback, prevents a great deal of unnecessary discouragement.
Fatigue, illness, a bad night and returning to work all legitimately reduce tolerance in this caseload. A programme that cannot flex downwards gets abandoned rather than adjusted.
The stock implication
If your prescribing follows the above, your consumption is weighted heavily towards the lighter strengths, and most clinics do not stock accordingly. The pattern we see is even splits across strengths, then light running out while heavy sits.
For a postnatal or pelvic health caseload, plan for roughly twice as much light as heavy. Our latex-free resistance loops are available in graded strengths from £2.49 ex VAT, and 2m flat bands from £3.33 ex VAT, with volume pricing applied at checkout. Departments supplying patients directly will usually do better buying band by the roll and cutting to length, at £37.49 ex VAT for 46m.
Ordering at service level rather than per clinician reaches a better tier, which is covered in our guide to equipping a women's health physiotherapy service.
Documenting it
Record the strength by name and the exercise it was issued for, not just the colour. Colour conventions differ between manufacturers, so a note saying "green loop" means nothing to the next clinician if the patient has since bought a different brand. Recording strength, exercise, position and repetitions makes a handover usable.
For professional standards, the Chartered Society of Physiotherapy and the Pelvic, Obstetric and Gynaecological Physiotherapy network are the relevant bodies, and NICE NG123 covers the supervised pelvic floor training this work sits alongside.
FAQs
What resistance should a postnatal patient start with?
Usually the lightest available, regardless of their pre-pregnancy training history. You are dosing connective tissue tolerance and pressure management rather than muscle capacity, so previous fitness is a poor guide. Progress once they can perform the movement slowly with a flat midline and normal breathing.
When should I progress resistance in postnatal rehab?
Only after progressing tempo, repetitions and position first. Resistance is the largest single jump available and is usually applied too early. Progress when the current dose is controlled, symptom-free and repeatable across two consecutive sessions.
Should resistance be reduced if a patient reports leaking?
Yes. Leaking during an exercise means the pressure system failed at that dose, so reduce load or impact rather than coaching harder. It is also a prompt to reassess pelvic floor function before returning to the previous level.
Does pre-pregnancy fitness predict starting resistance?
Poorly. A patient who trained heavily before pregnancy may still need the lightest loop, because the limiting tissue is not the muscle. Prescribing from training history is one of the more common causes of an aggravated presentation.
What strengths should a clinic stock for postnatal caseloads?
Weight it towards the lighter end, roughly twice as much light as heavy. Even splits across strengths is the usual pattern and it results in light running out while heavier stock sits unused.
How should resistance prescriptions be documented?
Record the strength by name alongside the exercise, position and repetitions, rather than relying on colour. Colour conventions vary between manufacturers, so a colour-only note becomes meaningless if the patient replaces the band with a different brand.
Conclusion
Start lighter than instinct suggests, progress tempo and position before resistance, and treat doming and leaking as overriding stop signals. Under-dosing costs you a line in the notes at review. Over-dosing costs you the patient.
Our graded latex-free loops and band rolls are priced for clinic ordering with volume tiers at checkout. Where a patient would rather buy their own, our consumer brand's postnatal recovery kit is built around the lightest strengths for exactly this stage.
