The tape is not doing the work your deep core has to do
Two small trials, one 48-hour measurement, and what kinesiology tape is genuinely useful for after a baby.
Quick answer
Kinesiology tape has been tested for diastasis recti in a handful of very small studies, and the honest summary is this: taping produced a small, measurable narrowing of the gap in the short term, but no study has shown that tape alone closes a diastasis long term. In the trials where women actually improved over weeks rather than hours, every group was also doing core strengthening work. Tape is best understood as a temporary support and a feedback cue, not a treatment. If you only have the budget or the energy for one thing, put it into progressive core training.
What kinesiology tape is meant to do
Kinesiology tape is the stretchy cotton strip you see on athletes' shoulders and knees. Applied to the abdomen after a baby, the idea is that the tape's recoil gently draws the two halves of the rectus abdominis toward the midline, gives the connective tissue between them a little external support, and reminds you where your middle is when you move.
That last part matters more than most people expect. A lot of postpartum core work is about noticing what your belly does under load, which is exactly what the sensation of tape on skin gives you. Whether the tape is physically changing the tissue is a separate and much harder question.
Average narrowing at the belly button after 48 hours of corrective taping in the Ptaszkowska trial
Women who completed that trial, split across taping and sham groups
Of first-time mums still had a diastasis at 12 months postpartum (Sperstad et al., 2016)
What the research actually found
There are two studies worth knowing about, and neither is large.
The 48-hour taping trial
Ptaszkowska and colleagues, publishing in the Journal of Clinical Medicine in 2021, ran a randomised trial in women between six weeks and twelve months postpartum who had a separation greater than 2 cm. One group wore kinesiology tape applied with a corrective technique; the other wore a non-stretch surgical tape as a sham. Both wore it for 48 hours, and the researchers measured the gap with digital calipers at the belly button and at points roughly 4.5 cm above and below it.
The taped group showed a statistically significant reduction at all three measurement sites. The sham group did not change. At the belly button, the average went from about 1.9 cm to about 1.7 cm.
The authors were candid about the limits: twenty-four women enrolled and twenty finished, the tape was only on for two days, the assessment relied partly on palpation, and there was no follow-up to see whether anything held. A 0.2 cm change measured immediately after removing tape is a real finding, but it is not the same as a closed gap.
The six-week exercise trial
Afzal and colleagues, in Healthcare in 2024, took a different angle. Twenty-four women between six and twenty-four months postpartum were split into three groups of eight for six weeks, three sessions a week. Every group did core strengthening exercises. One group added kinesiology tape, and one added tape plus surface EMG biofeedback.
The biofeedback group saw the greatest reduction in the distance between the muscles. Both intervention groups reported better physical functioning, energy, body pain and general health than the control group. And here is the finding that gets left out of most tape marketing: there was no statistically significant difference in core strength between the three groups. The exercises built the strength. The add-ons nudged the measurement.
Ptaszkowska 2021
13 women
Ptaszkowska 2021
11 women
Afzal 2024
8 women
Source: Ptaszkowska et al., Journal of Clinical Medicine, 2021; Afzal et al., Healthcare, 2024. For scale, the Sperstad prevalence study followed 300 women.
Groups of eight to thirteen are why researchers keep using the word "preliminary" about this topic. It is not that taping has been disproven. It is that it has barely been tested.
Tape, binders and training side by side
Mums usually arrive at taping while comparing it against a belly binder or a proper programme, so it helps to see the three next to each other honestly.
| Option | What it actually does | Evidence base | Rough cost | Best used for |
|---|---|---|---|---|
| Kinesiology tape | Light inward pull on the skin plus a constant tactile cue about your midline | Two small trials, short follow-up, positive but preliminary | $10 to $20 a roll, ongoing | Short-term support and body awareness while you train |
| Belly binder or wrap | Firm circumferential compression, often comfortable in the early weeks | Mixed, mostly comfort and pain outcomes rather than gap closure | $25 to $60 once | Early postpartum comfort, especially after a caesarean |
| Progressive core training | Rebuilds the deep abdominal muscles and how they manage pressure | The strongest and most consistent evidence of the three | Free to $200 depending on format | The actual long-term change |
| Tape plus training | Training does the work, tape adds feedback | Reasonable, and the format most studies actually tested | Training cost plus tape | Mums who like the extra cue and can afford both |
Notice that nothing in that table is a scam. Binders are genuinely nice in week two. Tape genuinely gives you feedback. They just sit on top of the thing that changes the outcome, which is how your deep core learns to handle load. If you want the mechanics behind that, our explainer on how pressure moves through your abdomen is the piece to read next, and we go through the compression question in detail in the belly wrap review.
If you want to try taping, do it sensibly
None of this is a reason to avoid tape. If it helps you feel supported through a long day of carrying a baby, that is a legitimate benefit. A few practical points drawn from how the trials were run:
- The trial applications lasted 48 hours, not permanently. Give your skin breaks.
- Stop if the skin underneath becomes red, itchy or blistered. Tape allergies are common enough to matter.
- Apply it to clean, dry, unbroken skin, and avoid a fresh caesarean scar until your GP or midwife has cleared it.
- Treat the sensation as information. If you feel your belly push out against the tape when you sit up, that is a signal to change how you are moving, which is exactly what coning and doming means.
- Do not use tape to push through exercises that are making your symptoms worse. That is the one genuinely unhelpful use.
The daily loads that matter most are not in the gym anyway. They are the fifty times a day you pick your baby up out of a cot. We wrote a companion guide on lifting and carrying without making a diastasis worse, and for most mums it changes more than any tape ever will.
The verdict
Kinesiology tape is a reasonable optional extra and a poor primary strategy. The evidence for it is real but thin, the measured effects are small and short-term, and in the one trial that followed women for six weeks the improvements tracked with the exercises rather than the tape. Buy a roll if you like the feedback. Do not buy it instead of a plan.
What to spend your effort on instead
Rebuilding after a baby is unglamorous and mostly consists of breathing well, loading gradually and not skipping the boring early stages. The good news in the Sperstad data is that the gap narrows on its own for a lot of women over the first year, from 60% affected at six weeks to 45.5% at six months and 32.6% at twelve. Structured work is what helps the ones who plateau.
You do not need a subscription to do it. If you are weighing up options, our breakdown of free versus paid programmes lays out where the money is and is not worth it, and whether a gap can close without surgery covers the outcomes people most want to know about. If you have not measured yours yet, start with the at-home self-test.
A one-time programme, not another subscription
Mumma Glow's Core Reconnect Program is a $15 one-time digital guide that walks you through deep core reconnection, breathing and progressive loading at your own pace, with no monthly fee and no app to remember to cancel. It is the affordable alternative to programmes like MUTU for mums who want the plan without the ongoing cost. Use code GLOW20 for 20% off.
Frequently asked questions
Does kinesiology tape close diastasis recti?
No study has shown that tape alone closes a diastasis. The Ptaszkowska 2021 trial found a statistically significant but small narrowing after 48 hours of taping, with no follow-up to see whether it lasted. In longer trials, every group was also doing core strengthening exercises, so the tape cannot be credited on its own.
How long should you leave kinesiology tape on after a baby?
The published trial used a 48-hour application, and that is a sensible ceiling. Remove it sooner if your skin becomes red, itchy or sore, and give your skin a break between applications.
Is kinesiology tape safe over a C-section scar?
Do not tape over a healing caesarean scar without clearing it with your GP, midwife or a women's health physiotherapist first. Scar tissue is more fragile than surrounding skin and the tape's adhesive can irritate or damage it.
Is tape better than a belly binder?
They do different jobs. A binder gives firm all-round compression that many mums find comforting in the early weeks, while tape gives a light directional pull and a constant reminder of where your midline is. Neither has been shown to rebuild deep core strength, which is what changes the long-term outcome.
Should I use tape while I exercise?
If it helps you sense your midline during gentle work, it is reasonable. What is not reasonable is using tape to push through movements that make you dome, bulge or leak. Those symptoms mean the exercise is currently too much, and covering them up delays progress. Results vary from mum to mum.
Sources: Ptaszkowska et al., Journal of Clinical Medicine, 2021 (randomised trial of kinesio taping for rectus abdominis diastasis); Afzal et al., Healthcare, 2024 (randomised trial of core strengthening with kinesiotaping and SEMG biofeedback); Sperstad et al., British Journal of Sports Medicine, 2016 (prevalence of diastasis recti in 300 first-time mothers); Cleveland Clinic; ACOG.
This article is general education, not medical advice, and Mumma Glow is not affiliated with any tape brand or programme named here. Results vary from mum to mum. Please see your GP, midwife or a women's health physiotherapist for guidance specific to you, particularly after a caesarean or if you have any pain, leaking or bulging.