Birth is not an event that happens to the body but one in which the body actively participates. The physical state of the mother at the onset of labour directly influences how labour progresses, how long it lasts, the degree of perineal trauma sustained, the likelihood of instrumental intervention, and the speed of postpartum recovery. Deliberate physical preparation in the final weeks of pregnancy is supported by evidence and is significantly underemphasised in standard antenatal care.
Perineal Massage: The Evidence
A Cochrane review by Beckmann and Stock evaluated perineal massage performed from 35 weeks of gestation and found that women who performed it had a significantly higher likelihood of intact perineum at birth, reduced rates of episiotomy, and lower rates of ongoing perineal pain at three months postpartum. The effect was larger in women who had not given birth vaginally before. The technique involves using clean fingers to stretch the posterior vaginal wall and perineum progressively over several minutes, daily or several times per week from 35 weeks. The discomfort of perineal massage during pregnancy, while not negligible, is considerably less than a perineal tear during birth.
Optimal Fetal Positioning
The position of the baby at the onset of labour significantly influences how labour progresses. The ideal position is occiput anterior, where the back of the baby's head faces the front of the mother's pelvis. A posterior position, where the baby faces forward, is associated with longer, more painful labours and higher rates of instrumental delivery. From 34 weeks, spending time in positions that encourage anterior positioning, including spending time on hands and knees, sitting upright rather than reclining, and avoiding deep soft sofas that tilt the pelvis backward, is recommended by midwives based on anatomical logic and observational data, though definitive randomised trial evidence is limited.
Physical Fitness and Labour Outcomes
Women who maintain regular aerobic exercise throughout pregnancy have shorter active labour phases and lower rates of epidural analgesia use in observational studies. Physical fitness improves cardiovascular efficiency and muscular endurance, both of which are relevant to the sustained effort of active labour. Cardiovascular fitness specifically supports the ability to work with contractions over many hours without reaching exhaustion. The ACOG and RCOG both cite maintained exercise as a factor associated with better labour and birth outcomes.
Breathwork and Pain Management in Labour
Controlled breathing is the most widely taught and most evidence-supported non-pharmacological pain management technique in labour. Slow rhythmic breathing at six to eight breaths per minute during contractions reduces pain perception through parasympathetic activation, reduces cortisol, and maintains the oxygen supply needed to sustain labour effort. Hypnobirthing programmes, which combine breathwork with relaxation and guided imagery, have a growing evidence base: a Cochrane review found that hypnosis-based techniques reduced epidural use and instrumental birth rates in several trials.
- Begin daily perineal massage from 35 weeks: five minutes per day or most days significantly reduces perineal trauma rates
- Adopt forward-leaning and upright positions from 34 weeks: hands and knees, birthing ball, and standing forward lean all encourage optimal fetal positioning
- Maintain cardiovascular fitness throughout pregnancy: even walking daily supports the endurance demands of active labour
- Practise slow breathing at six breaths per minute daily from 36 weeks: rehearsing the skill when not in pain makes it more accessible during contractions
- Consider a hypnobirthing programme: the evidence for reduced epidural and instrumental birth rates is meaningful and the skills are useful regardless of birth plan
Sources
- Beckmann, M.M., & Stock, O.M. (2013). Antenatal perineal massage for reducing perineal trauma. Cochrane Database of Systematic Reviews, 4, CD005123.
- Madden, K., et al. (2016). Hypnosis for pain management during labour and childbirth. Cochrane Database of Systematic Reviews, 5, CD009356.