Powerlifters reported no more pelvic floor symptoms than yoga practitioners
In short
In a cross-sectional survey of 103 physically active nulliparous women aged 18 to 30, grouped by primary exercise modality, total pelvic floor distress scores (PFDI-20) did not differ significantly (p = 0.209, ω² = 0.05). Neither did total sexual function scores (FSFI: p = 0.883, ω² = 0.00). Every individual subdomain was also non-significant, with effect sizes from ω² = 0.00 to 0.07 — negligible to small. In this sample, powerlifting and CrossFit produced no signal of more pelvic floor symptoms than yoga, Pilates or aerobic training. Being self-reported and cross-sectional, this is not proof of safety.
The concern that high-intensity, high-impact exercise raises intra-abdominal pressure and loads the pelvic floor is long-standing, and it is why women who lift are so often told to go lighter. This survey tested that concern by comparing modalities, and found no difference between them.
Who was surveyed?
103 physically active nulliparous women aged 18 to 30. Primary modality broke down as strength training combined with cardio 57%, powerlifting 14%, CrossFit 14%, aerobic training 10%, yoga or Pilates 6%. Pelvic floor distress was measured with the PFDI-20 and sexual function with the FSFI.
What exactly did it find?
No significant difference between modalities on any measure. Total PFDI-20 p = 0.209, total FSFI p = 0.883, and every subdomain p > 0.05 with effect sizes of ω² = 0.00 to 0.07. Exploratory correlations did show a weak link between pelvic floor distress and selected sexual function domains (ρ = 0.18 to 0.23, p < 0.05) — meaning symptoms track with each other, not with the sport.
How far can "no difference" be trusted?
This is the part that matters. It is a single-timepoint, self-reported survey, and the groups are small — 6 women in yoga or Pilates, 14 each in powerlifting and CrossFit. A sample that size can miss a real difference, so the result reads as "no difference detected," not "no difference exists". The authors say the same: adequately powered longitudinal studies with objective pelvic floor assessment are needed.
What a woman who lifts should take from it
The current evidence gives no reason to switch sports. Nothing here supports trading heavy squats and deadlifts for yoga. The usable criterion is symptoms themselves — pressure, leakage or pain warrants assessment by a pelvic health physiotherapist whatever your sport, and in their absence, keep training and track the numbers in the calculator. Related reading on training load and the body: lifting during pregnancy.
This survey covered nulliparous women aged 18 to 30 and does not transfer to women who have given birth or who already have diagnosed pelvic floor dysfunction. If you have leakage, pressure or pain, get assessed by a clinician before adjusting your training.
Frequently asked questions
Does heavy lifting damage the pelvic floor in women?
This survey detected no difference by modality. Across 103 nulliparous women aged 18 to 30, pelvic floor distress scores in the powerlifting and CrossFit groups were not significantly different from the yoga, Pilates or aerobic groups (p = 0.209).
Does this prove lifting is safe for the pelvic floor?
No. It is a single-timepoint self-reported survey with small groups — 6 women doing yoga or Pilates, 14 each in powerlifting and CrossFit — so a real difference could have been missed. "No difference detected" is the accurate reading.
What should you do if you have pelvic floor symptoms?
Pressure, leakage or pain warrants assessment by a pelvic health physiotherapist or clinician first, regardless of which sport you do. This study also found a weak correlation between pelvic floor distress and some sexual function domains (ρ = 0.18 to 0.23).
Do these results apply to women who have given birth?
They do not. The survey included only nulliparous women aged 18 to 30, and did not cover women with a birth history or pre-existing pelvic floor dysfunction.
Source: PubMed